Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

870 files changed, 25792 insertions, 0 deletions

diff --git a/js/src/tests/test262/built-ins/Date/15.9.1.15-1.js b/js/src/tests/test262/built-ins/Date/15.9.1.15-1.js
new file mode 100644
index 0000000000..f8b4a3a846
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/15.9.1.15-1.js
@@ -0,0 +1,20 @@
+// Copyright (c) 2012 Ecma International.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date-time-string-format
+description: >
+    Date Time String Format - specified default values will be set for
+    all optional fields(MM, DD, mm, ss and time zone) when they are
+    absent
+---*/
+
+var result = false;
+var expectedDateTimeStr = "1970-01-01T00:00:00.000Z";
+var dateObj = new Date("1970");
+var dateStr = dateObj.toISOString();
+result = dateStr === expectedDateTimeStr;
+
+assert(result, 'result !== true');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/S15.9.2.1_A1.js b/js/src/tests/test262/built-ins/Date/S15.9.2.1_A1.js
new file mode 100644
index 0000000000..12f408a723
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/S15.9.2.1_A1.js
@@ -0,0 +1,73 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date-year-month-date-hours-minutes-seconds-ms
+info: |
+    When Date is called as a function rather than as a constructor,
+    it should be "string" representing the current time (UTC)
+es5id: 15.9.2.1_A1
+description: Checking type of returned value
+---*/
+assert.sameValue(typeof Date(), "string", 'The value of `typeof Date()` is expected to be "string"');
+assert.sameValue(typeof Date(1), "string", 'The value of `typeof Date(1)` is expected to be "string"');
+assert.sameValue(typeof Date(1970, 1), "string", 'The value of `typeof Date(1970, 1)` is expected to be "string"');
+
+assert.sameValue(
+  typeof Date(1970, 1, 1),
+  "string",
+  'The value of `typeof Date(1970, 1, 1)` is expected to be "string"'
+);
+
+assert.sameValue(
+  typeof Date(1970, 1, 1, 1),
+  "string",
+  'The value of `typeof Date(1970, 1, 1, 1)` is expected to be "string"'
+);
+
+assert.sameValue(
+  typeof Date(1970, 1, 1, 1),
+  "string",
+  'The value of `typeof Date(1970, 1, 1, 1)` is expected to be "string"'
+);
+
+assert.sameValue(
+  typeof Date(1970, 1, 1, 1, 0),
+  "string",
+  'The value of `typeof Date(1970, 1, 1, 1, 0)` is expected to be "string"'
+);
+
+assert.sameValue(
+  typeof Date(1970, 1, 1, 1, 0, 0),
+  "string",
+  'The value of `typeof Date(1970, 1, 1, 1, 0, 0)` is expected to be "string"'
+);
+
+assert.sameValue(
+  typeof Date(1970, 1, 1, 1, 0, 0, 0),
+  "string",
+  'The value of `typeof Date(1970, 1, 1, 1, 0, 0, 0)` is expected to be "string"'
+);
+
+assert.sameValue(
+  typeof Date(Number.NaN),
+  "string",
+  'The value of `typeof Date(Number.NaN)` is expected to be "string"'
+);
+
+assert.sameValue(
+  typeof Date(Number.POSITIVE_INFINITY),
+  "string",
+  'The value of `typeof Date(Number.POSITIVE_INFINITY)` is expected to be "string"'
+);
+
+assert.sameValue(
+  typeof Date(Number.NEGATIVE_INFINITY),
+  "string",
+  'The value of `typeof Date(Number.NEGATIVE_INFINITY)` is expected to be "string"'
+);
+
+assert.sameValue(typeof Date(undefined), "string", 'The value of `typeof Date(undefined)` is expected to be "string"');
+assert.sameValue(typeof Date(null), "string", 'The value of `typeof Date(null)` is expected to be "string"');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/S15.9.2.1_A2.js b/js/src/tests/test262/built-ins/Date/S15.9.2.1_A2.js
new file mode 100644
index 0000000000..81b6bfc777
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/S15.9.2.1_A2.js
@@ -0,0 +1,94 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date-year-month-date-hours-minutes-seconds-ms
+info: |
+    All of the arguments are optional, any arguments supplied are
+    accepted but are completely ignored. A string is created and returned as
+    if by the expression (new Date()).toString()
+es5id: 15.9.2.1_A2
+description: Use various number arguments and various types of ones
+---*/
+
+function isEqual(d1, d2) {
+  if (d1 === d2) {
+    return true;
+  } else if (Math.abs(Date.parse(d1) - Date.parse(d2)) <= 1000) {
+    return true;
+  } else {
+    return false;
+  }
+}
+
+assert(
+  isEqual(Date(), (new Date()).toString()),
+  'isEqual(Date(), (new Date()).toString()) must return true'
+);
+
+assert(
+  isEqual(Date(1), (new Date()).toString()),
+  'isEqual(Date(1), (new Date()).toString()) must return true'
+);
+
+assert(
+  isEqual(Date(1970, 1), (new Date()).toString()),
+  'isEqual(Date(1970, 1), (new Date()).toString()) must return true'
+);
+
+assert(
+  isEqual(Date(1970, 1, 1), (new Date()).toString()),
+  'isEqual(Date(1970, 1, 1), (new Date()).toString()) must return true'
+);
+
+assert(
+  isEqual(Date(1970, 1, 1, 1), (new Date()).toString()),
+  'isEqual(Date(1970, 1, 1, 1), (new Date()).toString()) must return true'
+);
+
+assert(
+  isEqual(Date(1970, 1, 1, 1), (new Date()).toString()),
+  'isEqual(Date(1970, 1, 1, 1), (new Date()).toString()) must return true'
+);
+
+assert(
+  isEqual(Date(1970, 1, 1, 1, 0), (new Date()).toString()),
+  'isEqual(Date(1970, 1, 1, 1, 0), (new Date()).toString()) must return true'
+);
+
+assert(
+  isEqual(Date(1970, 1, 1, 1, 0, 0), (new Date()).toString()),
+  'isEqual(Date(1970, 1, 1, 1, 0, 0), (new Date()).toString()) must return true'
+);
+
+assert(
+  isEqual(Date(1970, 1, 1, 1, 0, 0, 0), (new Date()).toString()),
+  'isEqual(Date(1970, 1, 1, 1, 0, 0, 0), (new Date()).toString()) must return true'
+);
+
+assert(
+  isEqual(Date(Number.NaN), (new Date()).toString()),
+  'isEqual(Date(Number.NaN), (new Date()).toString()) must return true'
+);
+
+assert(
+  isEqual(Date(Number.POSITIVE_INFINITY), (new Date()).toString()),
+  'isEqual(Date(Number.POSITIVE_INFINITY), (new Date()).toString()) must return true'
+);
+
+assert(
+  isEqual(Date(Number.NEGATIVE_INFINITY), (new Date()).toString()),
+  'isEqual(Date(Number.NEGATIVE_INFINITY), (new Date()).toString()) must return true'
+);
+
+assert(
+  isEqual(Date(undefined), (new Date()).toString()),
+  'isEqual(Date(undefined), (new Date()).toString()) must return true'
+);
+
+assert(
+  isEqual(Date(null), (new Date()).toString()),
+  'isEqual(Date(null), (new Date()).toString()) must return true'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/S15.9.3.1_A1_T1.js b/js/src/tests/test262/built-ins/Date/S15.9.3.1_A1_T1.js
new file mode 100644
index 0000000000..8f64633007
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/S15.9.3.1_A1_T1.js
@@ -0,0 +1,180 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    When Date is called as part of a new expression it is
+    a constructor: it initializes the newly created object
+esid: sec-date-year-month-date-hours-minutes-seconds-ms
+description: 2 arguments, (year, month)
+---*/
+
+assert.sameValue(
+  typeof new Date(1899, 11),
+  "object",
+  'The value of `typeof new Date(1899, 11)` is expected to be "object"'
+);
+
+assert.notSameValue(new Date(1899, 11), undefined, 'new Date(1899, 11) is expected to not equal ``undefined``');
+
+var x13 = new Date(1899, 11);
+assert.sameValue(typeof x13, "object", 'The value of `typeof x13` is expected to be "object"');
+
+var x14 = new Date(1899, 11);
+assert.notSameValue(x14, undefined, 'The value of x14 is expected to not equal ``undefined``');
+
+assert.sameValue(
+  typeof new Date(1899, 12),
+  "object",
+  'The value of `typeof new Date(1899, 12)` is expected to be "object"'
+);
+
+assert.notSameValue(new Date(1899, 12), undefined, 'new Date(1899, 12) is expected to not equal ``undefined``');
+
+var x23 = new Date(1899, 12);
+assert.sameValue(typeof x23, "object", 'The value of `typeof x23` is expected to be "object"');
+
+var x24 = new Date(1899, 12);
+assert.notSameValue(x24, undefined, 'The value of x24 is expected to not equal ``undefined``');
+
+assert.sameValue(
+  typeof new Date(1900, 0),
+  "object",
+  'The value of `typeof new Date(1900, 0)` is expected to be "object"'
+);
+
+assert.notSameValue(new Date(1900, 0), undefined, 'new Date(1900, 0) is expected to not equal ``undefined``');
+
+var x33 = new Date(1900, 0);
+assert.sameValue(typeof x33, "object", 'The value of `typeof x33` is expected to be "object"');
+
+var x34 = new Date(1900, 0);
+assert.notSameValue(x34, undefined, 'The value of x34 is expected to not equal ``undefined``');
+
+assert.sameValue(
+  typeof new Date(1969, 11),
+  "object",
+  'The value of `typeof new Date(1969, 11)` is expected to be "object"'
+);
+
+assert.notSameValue(new Date(1969, 11), undefined, 'new Date(1969, 11) is expected to not equal ``undefined``');
+
+var x43 = new Date(1969, 11);
+assert.sameValue(typeof x43, "object", 'The value of `typeof x43` is expected to be "object"');
+
+var x44 = new Date(1969, 11);
+assert.notSameValue(x44, undefined, 'The value of x44 is expected to not equal ``undefined``');
+
+assert.sameValue(
+  typeof new Date(1969, 12),
+  "object",
+  'The value of `typeof new Date(1969, 12)` is expected to be "object"'
+);
+
+assert.notSameValue(new Date(1969, 12), undefined, 'new Date(1969, 12) is expected to not equal ``undefined``');
+
+var x53 = new Date(1969, 12);
+assert.sameValue(typeof x53, "object", 'The value of `typeof x53` is expected to be "object"');
+
+var x54 = new Date(1969, 12);
+assert.notSameValue(x54, undefined, 'The value of x54 is expected to not equal ``undefined``');
+
+assert.sameValue(
+  typeof new Date(1970, 0),
+  "object",
+  'The value of `typeof new Date(1970, 0)` is expected to be "object"'
+);
+
+assert.notSameValue(new Date(1970, 0), undefined, 'new Date(1970, 0) is expected to not equal ``undefined``');
+
+var x63 = new Date(1970, 0);
+assert.sameValue(typeof x63, "object", 'The value of `typeof x63` is expected to be "object"');
+
+var x64 = new Date(1970, 0);
+assert.notSameValue(x64, undefined, 'The value of x64 is expected to not equal ``undefined``');
+
+assert.sameValue(
+  typeof new Date(1999, 11),
+  "object",
+  'The value of `typeof new Date(1999, 11)` is expected to be "object"'
+);
+
+assert.notSameValue(new Date(1999, 11), undefined, 'new Date(1999, 11) is expected to not equal ``undefined``');
+
+var x73 = new Date(1999, 11);
+assert.sameValue(typeof x73, "object", 'The value of `typeof x73` is expected to be "object"');
+
+var x74 = new Date(1999, 11);
+assert.notSameValue(x74, undefined, 'The value of x74 is expected to not equal ``undefined``');
+
+assert.sameValue(
+  typeof new Date(1999, 12),
+  "object",
+  'The value of `typeof new Date(1999, 12)` is expected to be "object"'
+);
+
+assert.notSameValue(new Date(1999, 12), undefined, 'new Date(1999, 12) is expected to not equal ``undefined``');
+
+var x83 = new Date(1999, 12);
+assert.sameValue(typeof x83, "object", 'The value of `typeof x83` is expected to be "object"');
+
+var x84 = new Date(1999, 12);
+assert.notSameValue(x84, undefined, 'The value of x84 is expected to not equal ``undefined``');
+
+assert.sameValue(
+  typeof new Date(2000, 0),
+  "object",
+  'The value of `typeof new Date(2000, 0)` is expected to be "object"'
+);
+
+assert.notSameValue(new Date(2000, 0), undefined, 'new Date(2000, 0) is expected to not equal ``undefined``');
+
+var x93 = new Date(2000, 0);
+assert.sameValue(typeof x93, "object", 'The value of `typeof x93` is expected to be "object"');
+
+var x94 = new Date(2000, 0);
+assert.notSameValue(x94, undefined, 'The value of x94 is expected to not equal ``undefined``');
+
+assert.sameValue(
+  typeof new Date(2099, 11),
+  "object",
+  'The value of `typeof new Date(2099, 11)` is expected to be "object"'
+);
+
+assert.notSameValue(new Date(2099, 11), undefined, 'new Date(2099, 11) is expected to not equal ``undefined``');
+
+var x103 = new Date(2099, 11);
+assert.sameValue(typeof x103, "object", 'The value of `typeof x103` is expected to be "object"');
+
+var x104 = new Date(2099, 11);
+assert.notSameValue(x104, undefined, 'The value of x104 is expected to not equal ``undefined``');
+
+assert.sameValue(
+  typeof new Date(2099, 12),
+  "object",
+  'The value of `typeof new Date(2099, 12)` is expected to be "object"'
+);
+
+assert.notSameValue(new Date(2099, 12), undefined, 'new Date(2099, 12) is expected to not equal ``undefined``');
+
+var x113 = new Date(2099, 12);
+assert.sameValue(typeof x113, "object", 'The value of `typeof x113` is expected to be "object"');
+
+var x114 = new Date(2099, 12);
+assert.notSameValue(x114, undefined, 'The value of x114 is expected to not equal ``undefined``');
+
+assert.sameValue(
+  typeof new Date(2100, 0),
+  "object",
+  'The value of `typeof new Date(2100, 0)` is expected to be "object"'
+);
+
+assert.notSameValue(new Date(2100, 0), undefined, 'new Date(2100, 0) is expected to not equal ``undefined``');
+
+var x123 = new Date(2100, 0);
+assert.sameValue(typeof x123, "object", 'The value of `typeof x123` is expected to be "object"');
+
+var x124 = new Date(2100, 0);
+assert.notSameValue(x124, undefined, 'The value of x124 is expected to not equal ``undefined``');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/S15.9.3.1_A1_T2.js b/js/src/tests/test262/built-ins/Date/S15.9.3.1_A1_T2.js
new file mode 100644
index 0000000000..e2c91e81b3
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/S15.9.3.1_A1_T2.js
@@ -0,0 +1,180 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    When Date is called as part of a new expression it is
+    a constructor: it initializes the newly created object
+esid: sec-date-year-month-date-hours-minutes-seconds-ms
+description: 3 arguments, (year, month, date)
+---*/
+
+assert.sameValue(
+  typeof new Date(1899, 11, 31),
+  "object",
+  'The value of `typeof new Date(1899, 11, 31)` is expected to be "object"'
+);
+
+assert.notSameValue(new Date(1899, 11, 31), undefined, 'new Date(1899, 11, 31) is expected to not equal ``undefined``');
+
+var x13 = new Date(1899, 11, 31);
+assert.sameValue(typeof x13, "object", 'The value of `typeof x13` is expected to be "object"');
+
+var x14 = new Date(1899, 11, 31);
+assert.notSameValue(x14, undefined, 'The value of x14 is expected to not equal ``undefined``');
+
+assert.sameValue(
+  typeof new Date(1899, 12, 1),
+  "object",
+  'The value of `typeof new Date(1899, 12, 1)` is expected to be "object"'
+);
+
+assert.notSameValue(new Date(1899, 12, 1), undefined, 'new Date(1899, 12, 1) is expected to not equal ``undefined``');
+
+var x23 = new Date(1899, 12, 1);
+assert.sameValue(typeof x23, "object", 'The value of `typeof x23` is expected to be "object"');
+
+var x24 = new Date(1899, 12, 1);
+assert.notSameValue(x24, undefined, 'The value of x24 is expected to not equal ``undefined``');
+
+assert.sameValue(
+  typeof new Date(1900, 0, 1),
+  "object",
+  'The value of `typeof new Date(1900, 0, 1)` is expected to be "object"'
+);
+
+assert.notSameValue(new Date(1900, 0, 1), undefined, 'new Date(1900, 0, 1) is expected to not equal ``undefined``');
+
+var x33 = new Date(1900, 0, 1);
+assert.sameValue(typeof x33, "object", 'The value of `typeof x33` is expected to be "object"');
+
+var x34 = new Date(1900, 0, 1);
+assert.notSameValue(x34, undefined, 'The value of x34 is expected to not equal ``undefined``');
+
+assert.sameValue(
+  typeof new Date(1969, 11, 31),
+  "object",
+  'The value of `typeof new Date(1969, 11, 31)` is expected to be "object"'
+);
+
+assert.notSameValue(new Date(1969, 11, 31), undefined, 'new Date(1969, 11, 31) is expected to not equal ``undefined``');
+
+var x43 = new Date(1969, 11, 31);
+assert.sameValue(typeof x43, "object", 'The value of `typeof x43` is expected to be "object"');
+
+var x44 = new Date(1969, 11, 31);
+assert.notSameValue(x44, undefined, 'The value of x44 is expected to not equal ``undefined``');
+
+assert.sameValue(
+  typeof new Date(1969, 12, 1),
+  "object",
+  'The value of `typeof new Date(1969, 12, 1)` is expected to be "object"'
+);
+
+assert.notSameValue(new Date(1969, 12, 1), undefined, 'new Date(1969, 12, 1) is expected to not equal ``undefined``');
+
+var x53 = new Date(1969, 12, 1);
+assert.sameValue(typeof x53, "object", 'The value of `typeof x53` is expected to be "object"');
+
+var x54 = new Date(1969, 12, 1);
+assert.notSameValue(x54, undefined, 'The value of x54 is expected to not equal ``undefined``');
+
+assert.sameValue(
+  typeof new Date(1970, 0, 1),
+  "object",
+  'The value of `typeof new Date(1970, 0, 1)` is expected to be "object"'
+);
+
+assert.notSameValue(new Date(1970, 0, 1), undefined, 'new Date(1970, 0, 1) is expected to not equal ``undefined``');
+
+var x63 = new Date(1970, 0, 1);
+assert.sameValue(typeof x63, "object", 'The value of `typeof x63` is expected to be "object"');
+
+var x64 = new Date(1970, 0, 1);
+assert.notSameValue(x64, undefined, 'The value of x64 is expected to not equal ``undefined``');
+
+assert.sameValue(
+  typeof new Date(1999, 11, 31),
+  "object",
+  'The value of `typeof new Date(1999, 11, 31)` is expected to be "object"'
+);
+
+assert.notSameValue(new Date(1999, 11, 31), undefined, 'new Date(1999, 11, 31) is expected to not equal ``undefined``');
+
+var x73 = new Date(1999, 11, 31);
+assert.sameValue(typeof x73, "object", 'The value of `typeof x73` is expected to be "object"');
+
+var x74 = new Date(1999, 11, 31);
+assert.notSameValue(x74, undefined, 'The value of x74 is expected to not equal ``undefined``');
+
+assert.sameValue(
+  typeof new Date(1999, 12, 1),
+  "object",
+  'The value of `typeof new Date(1999, 12, 1)` is expected to be "object"'
+);
+
+assert.notSameValue(new Date(1999, 12, 1), undefined, 'new Date(1999, 12, 1) is expected to not equal ``undefined``');
+
+var x83 = new Date(1999, 12, 1);
+assert.sameValue(typeof x83, "object", 'The value of `typeof x83` is expected to be "object"');
+
+var x84 = new Date(1999, 12, 1);
+assert.notSameValue(x84, undefined, 'The value of x84 is expected to not equal ``undefined``');
+
+assert.sameValue(
+  typeof new Date(2000, 0, 1),
+  "object",
+  'The value of `typeof new Date(2000, 0, 1)` is expected to be "object"'
+);
+
+assert.notSameValue(new Date(2000, 0, 1), undefined, 'new Date(2000, 0, 1) is expected to not equal ``undefined``');
+
+var x93 = new Date(2000, 0, 1);
+assert.sameValue(typeof x93, "object", 'The value of `typeof x93` is expected to be "object"');
+
+var x94 = new Date(2000, 0, 1);
+assert.notSameValue(x94, undefined, 'The value of x94 is expected to not equal ``undefined``');
+
+assert.sameValue(
+  typeof new Date(2099, 11, 31),
+  "object",
+  'The value of `typeof new Date(2099, 11, 31)` is expected to be "object"'
+);
+
+assert.notSameValue(new Date(2099, 11, 31), undefined, 'new Date(2099, 11, 31) is expected to not equal ``undefined``');
+
+var x103 = new Date(2099, 11, 31);
+assert.sameValue(typeof x103, "object", 'The value of `typeof x103` is expected to be "object"');
+
+var x104 = new Date(2099, 11, 31);
+assert.notSameValue(x104, undefined, 'The value of x104 is expected to not equal ``undefined``');
+
+assert.sameValue(
+  typeof new Date(2099, 12, 1),
+  "object",
+  'The value of `typeof new Date(2099, 12, 1)` is expected to be "object"'
+);
+
+assert.notSameValue(new Date(2099, 12, 1), undefined, 'new Date(2099, 12, 1) is expected to not equal ``undefined``');
+
+var x113 = new Date(2099, 12, 1);
+assert.sameValue(typeof x113, "object", 'The value of `typeof x113` is expected to be "object"');
+
+var x114 = new Date(2099, 12, 1);
+assert.notSameValue(x114, undefined, 'The value of x114 is expected to not equal ``undefined``');
+
+assert.sameValue(
+  typeof new Date(2100, 0, 1),
+  "object",
+  'The value of `typeof new Date(2100, 0, 1)` is expected to be "object"'
+);
+
+assert.notSameValue(new Date(2100, 0, 1), undefined, 'new Date(2100, 0, 1) is expected to not equal ``undefined``');
+
+var x123 = new Date(2100, 0, 1);
+assert.sameValue(typeof x123, "object", 'The value of `typeof x123` is expected to be "object"');
+
+var x124 = new Date(2100, 0, 1);
+assert.notSameValue(x124, undefined, 'The value of x124 is expected to not equal ``undefined``');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/S15.9.3.1_A1_T3.js b/js/src/tests/test262/built-ins/Date/S15.9.3.1_A1_T3.js
new file mode 100644
index 0000000000..9494ea056a
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/S15.9.3.1_A1_T3.js
@@ -0,0 +1,211 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    When Date is called as part of a new expression it is
+    a constructor: it initializes the newly created object
+esid: sec-date-year-month-date-hours-minutes-seconds-ms
+description: 4 arguments, (year, month, date, hours)
+---*/
+assert.sameValue(
+  typeof new Date(1899, 11, 31, 23),
+  "object",
+  'The value of `typeof new Date(1899, 11, 31, 23)` is expected to be "object"'
+);
+
+assert.notSameValue(
+  new Date(1899, 11, 31, 23),
+  undefined,
+  'new Date(1899, 11, 31, 23) is expected to not equal ``undefined``'
+);
+
+var x13 = new Date(1899, 11, 31, 23);
+assert.sameValue(typeof x13, "object", 'The value of `typeof x13` is expected to be "object"');
+
+var x14 = new Date(1899, 11, 31, 23);
+assert.notSameValue(x14, undefined, 'The value of x14 is expected to not equal ``undefined``');
+
+assert.sameValue(
+  typeof new Date(1899, 12, 1, 0),
+  "object",
+  'The value of `typeof new Date(1899, 12, 1, 0)` is expected to be "object"'
+);
+
+assert.notSameValue(
+  new Date(1899, 12, 1, 0),
+  undefined,
+  'new Date(1899, 12, 1, 0) is expected to not equal ``undefined``'
+);
+
+var x23 = new Date(1899, 12, 1, 0);
+assert.sameValue(typeof x23, "object", 'The value of `typeof x23` is expected to be "object"');
+
+var x24 = new Date(1899, 12, 1, 0);
+assert.notSameValue(x24, undefined, 'The value of x24 is expected to not equal ``undefined``');
+
+assert.sameValue(
+  typeof new Date(1900, 0, 1, 0),
+  "object",
+  'The value of `typeof new Date(1900, 0, 1, 0)` is expected to be "object"'
+);
+
+assert.notSameValue(new Date(1900, 0, 1, 0), undefined, 'new Date(1900, 0, 1, 0) is expected to not equal ``undefined``');
+
+var x33 = new Date(1900, 0, 1, 0);
+assert.sameValue(typeof x33, "object", 'The value of `typeof x33` is expected to be "object"');
+
+var x34 = new Date(1900, 0, 1, 0);
+assert.notSameValue(x34, undefined, 'The value of x34 is expected to not equal ``undefined``');
+
+assert.sameValue(
+  typeof new Date(1969, 11, 31, 23),
+  "object",
+  'The value of `typeof new Date(1969, 11, 31, 23)` is expected to be "object"'
+);
+
+assert.notSameValue(
+  new Date(1969, 11, 31, 23),
+  undefined,
+  'new Date(1969, 11, 31, 23) is expected to not equal ``undefined``'
+);
+
+var x43 = new Date(1969, 11, 31, 23);
+assert.sameValue(typeof x43, "object", 'The value of `typeof x43` is expected to be "object"');
+
+var x44 = new Date(1969, 11, 31, 23);
+assert.notSameValue(x44, undefined, 'The value of x44 is expected to not equal ``undefined``');
+
+assert.sameValue(
+  typeof new Date(1969, 12, 1, 0),
+  "object",
+  'The value of `typeof new Date(1969, 12, 1, 0)` is expected to be "object"'
+);
+
+assert.notSameValue(
+  new Date(1969, 12, 1, 0),
+  undefined,
+  'new Date(1969, 12, 1, 0) is expected to not equal ``undefined``'
+);
+
+var x53 = new Date(1969, 12, 1, 0);
+assert.sameValue(typeof x53, "object", 'The value of `typeof x53` is expected to be "object"');
+
+var x54 = new Date(1969, 12, 1, 0);
+assert.notSameValue(x54, undefined, 'The value of x54 is expected to not equal ``undefined``');
+
+assert.sameValue(
+  typeof new Date(1970, 0, 1, 0),
+  "object",
+  'The value of `typeof new Date(1970, 0, 1, 0)` is expected to be "object"'
+);
+
+assert.notSameValue(new Date(1970, 0, 1, 0), undefined, 'new Date(1970, 0, 1, 0) is expected to not equal ``undefined``');
+
+var x63 = new Date(1970, 0, 1, 0);
+assert.sameValue(typeof x63, "object", 'The value of `typeof x63` is expected to be "object"');
+
+var x64 = new Date(1970, 0, 1, 0);
+assert.notSameValue(x64, undefined, 'The value of x64 is expected to not equal ``undefined``');
+
+assert.sameValue(
+  typeof new Date(1999, 11, 31, 23),
+  "object",
+  'The value of `typeof new Date(1999, 11, 31, 23)` is expected to be "object"'
+);
+
+assert.notSameValue(
+  new Date(1999, 11, 31, 23),
+  undefined,
+  'new Date(1999, 11, 31, 23) is expected to not equal ``undefined``'
+);
+
+var x73 = new Date(1999, 11, 31, 23);
+assert.sameValue(typeof x73, "object", 'The value of `typeof x73` is expected to be "object"');
+
+var x74 = new Date(1999, 11, 31, 23);
+assert.notSameValue(x74, undefined, 'The value of x74 is expected to not equal ``undefined``');
+
+assert.sameValue(
+  typeof new Date(1999, 12, 1, 0),
+  "object",
+  'The value of `typeof new Date(1999, 12, 1, 0)` is expected to be "object"'
+);
+
+assert.notSameValue(
+  new Date(1999, 12, 1, 0),
+  undefined,
+  'new Date(1999, 12, 1, 0) is expected to not equal ``undefined``'
+);
+
+var x83 = new Date(1999, 12, 1, 0);
+assert.sameValue(typeof x83, "object", 'The value of `typeof x83` is expected to be "object"');
+
+var x84 = new Date(1999, 12, 1, 0);
+assert.notSameValue(x84, undefined, 'The value of x84 is expected to not equal ``undefined``');
+
+assert.sameValue(
+  typeof new Date(2000, 0, 1, 0),
+  "object",
+  'The value of `typeof new Date(2000, 0, 1, 0)` is expected to be "object"'
+);
+
+assert.notSameValue(new Date(2000, 0, 1, 0), undefined, 'new Date(2000, 0, 1, 0) is expected to not equal ``undefined``');
+
+var x93 = new Date(2000, 0, 1, 0);
+assert.sameValue(typeof x93, "object", 'The value of `typeof x93` is expected to be "object"');
+
+var x94 = new Date(2000, 0, 1, 0);
+assert.notSameValue(x94, undefined, 'The value of x94 is expected to not equal ``undefined``');
+
+assert.sameValue(
+  typeof new Date(2099, 11, 31, 23),
+  "object",
+  'The value of `typeof new Date(2099, 11, 31, 23)` is expected to be "object"'
+);
+
+assert.notSameValue(
+  new Date(2099, 11, 31, 23),
+  undefined,
+  'new Date(2099, 11, 31, 23) is expected to not equal ``undefined``'
+);
+
+var x103 = new Date(2099, 11, 31, 23);
+assert.sameValue(typeof x103, "object", 'The value of `typeof x103` is expected to be "object"');
+
+var x104 = new Date(2099, 11, 31, 23);
+assert.notSameValue(x104, undefined, 'The value of x104 is expected to not equal ``undefined``');
+
+assert.sameValue(
+  typeof new Date(2099, 12, 1, 0),
+  "object",
+  'The value of `typeof new Date(2099, 12, 1, 0)` is expected to be "object"'
+);
+
+assert.notSameValue(
+  new Date(2099, 12, 1, 0),
+  undefined,
+  'new Date(2099, 12, 1, 0) is expected to not equal ``undefined``'
+);
+
+var x113 = new Date(2099, 12, 1, 0);
+assert.sameValue(typeof x113, "object", 'The value of `typeof x113` is expected to be "object"');
+
+var x114 = new Date(2099, 12, 1, 0);
+assert.notSameValue(x114, undefined, 'The value of x114 is expected to not equal ``undefined``');
+
+assert.sameValue(
+  typeof new Date(2100, 0, 1, 0),
+  "object",
+  'The value of `typeof new Date(2100, 0, 1, 0)` is expected to be "object"'
+);
+
+assert.notSameValue(new Date(2100, 0, 1, 0), undefined, 'new Date(2100, 0, 1, 0) is expected to not equal ``undefined``');
+
+var x123 = new Date(2100, 0, 1, 0);
+assert.sameValue(typeof x123, "object", 'The value of `typeof x123` is expected to be "object"');
+
+var x124 = new Date(2100, 0, 1, 0);
+assert.notSameValue(x124, undefined, 'The value of x124 is expected to not equal ``undefined``');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/S15.9.3.1_A1_T4.js b/js/src/tests/test262/built-ins/Date/S15.9.3.1_A1_T4.js
new file mode 100644
index 0000000000..a0bc64f510
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/S15.9.3.1_A1_T4.js
@@ -0,0 +1,227 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    When Date is called as part of a new expression it is
+    a constructor: it initializes the newly created object
+esid: sec-date-year-month-date-hours-minutes-seconds-ms
+description: 5 arguments, (year, month, date, hours, minutes)
+---*/
+assert.sameValue(
+  typeof new Date(1899, 11, 31, 23, 59),
+  "object",
+  'The value of `typeof new Date(1899, 11, 31, 23, 59)` is expected to be "object"'
+);
+
+assert.notSameValue(
+  new Date(1899, 11, 31, 23, 59),
+  undefined,
+  'new Date(1899, 11, 31, 23, 59) is expected to not equal ``undefined``'
+);
+
+var x13 = new Date(1899, 11, 31, 23, 59);
+assert.sameValue(typeof x13, "object", 'The value of `typeof x13` is expected to be "object"');
+
+var x14 = new Date(1899, 11, 31, 23, 59);
+assert.notSameValue(x14, undefined, 'The value of x14 is expected to not equal ``undefined``');
+
+assert.sameValue(
+  typeof new Date(1899, 12, 1, 0, 0),
+  "object",
+  'The value of `typeof new Date(1899, 12, 1, 0, 0)` is expected to be "object"'
+);
+
+assert.notSameValue(
+  new Date(1899, 12, 1, 0, 0),
+  undefined,
+  'new Date(1899, 12, 1, 0, 0) is expected to not equal ``undefined``'
+);
+
+var x23 = new Date(1899, 12, 1, 0, 0);
+assert.sameValue(typeof x23, "object", 'The value of `typeof x23` is expected to be "object"');
+
+var x24 = new Date(1899, 12, 1, 0, 0);
+assert.notSameValue(x24, undefined, 'The value of x24 is expected to not equal ``undefined``');
+
+assert.sameValue(
+  typeof new Date(1900, 0, 1, 0, 0),
+  "object",
+  'The value of `typeof new Date(1900, 0, 1, 0, 0)` is expected to be "object"'
+);
+
+assert.notSameValue(
+  new Date(1900, 0, 1, 0, 0),
+  undefined,
+  'new Date(1900, 0, 1, 0, 0) is expected to not equal ``undefined``'
+);
+
+var x33 = new Date(1900, 0, 1, 0, 0);
+assert.sameValue(typeof x33, "object", 'The value of `typeof x33` is expected to be "object"');
+
+var x34 = new Date(1900, 0, 1, 0, 0);
+assert.notSameValue(x34, undefined, 'The value of x34 is expected to not equal ``undefined``');
+
+assert.sameValue(
+  typeof new Date(1969, 11, 31, 23, 59),
+  "object",
+  'The value of `typeof new Date(1969, 11, 31, 23, 59)` is expected to be "object"'
+);
+
+assert.notSameValue(
+  new Date(1969, 11, 31, 23, 59),
+  undefined,
+  'new Date(1969, 11, 31, 23, 59) is expected to not equal ``undefined``'
+);
+
+var x43 = new Date(1969, 11, 31, 23, 59);
+assert.sameValue(typeof x43, "object", 'The value of `typeof x43` is expected to be "object"');
+
+var x44 = new Date(1969, 11, 31, 23, 59);
+assert.notSameValue(x44, undefined, 'The value of x44 is expected to not equal ``undefined``');
+
+assert.sameValue(
+  typeof new Date(1969, 12, 1, 0, 0),
+  "object",
+  'The value of `typeof new Date(1969, 12, 1, 0, 0)` is expected to be "object"'
+);
+
+assert.notSameValue(
+  new Date(1969, 12, 1, 0, 0),
+  undefined,
+  'new Date(1969, 12, 1, 0, 0) is expected to not equal ``undefined``'
+);
+
+var x53 = new Date(1969, 12, 1, 0, 0);
+assert.sameValue(typeof x53, "object", 'The value of `typeof x53` is expected to be "object"');
+
+var x54 = new Date(1969, 12, 1, 0, 0);
+assert.notSameValue(x54, undefined, 'The value of x54 is expected to not equal ``undefined``');
+
+assert.sameValue(
+  typeof new Date(1970, 0, 1, 0, 0),
+  "object",
+  'The value of `typeof new Date(1970, 0, 1, 0, 0)` is expected to be "object"'
+);
+
+assert.notSameValue(
+  new Date(1970, 0, 1, 0, 0),
+  undefined,
+  'new Date(1970, 0, 1, 0, 0) is expected to not equal ``undefined``'
+);
+
+var x63 = new Date(1970, 0, 1, 0, 0);
+assert.sameValue(typeof x63, "object", 'The value of `typeof x63` is expected to be "object"');
+
+var x64 = new Date(1970, 0, 1, 0, 0);
+assert.notSameValue(x64, undefined, 'The value of x64 is expected to not equal ``undefined``');
+
+assert.sameValue(
+  typeof new Date(1999, 11, 31, 23, 59),
+  "object",
+  'The value of `typeof new Date(1999, 11, 31, 23, 59)` is expected to be "object"'
+);
+
+assert.notSameValue(
+  new Date(1999, 11, 31, 23, 59),
+  undefined,
+  'new Date(1999, 11, 31, 23, 59) is expected to not equal ``undefined``'
+);
+
+var x73 = new Date(1999, 11, 31, 23, 59);
+assert.sameValue(typeof x73, "object", 'The value of `typeof x73` is expected to be "object"');
+
+var x74 = new Date(1999, 11, 31, 23, 59);
+assert.notSameValue(x74, undefined, 'The value of x74 is expected to not equal ``undefined``');
+
+assert.sameValue(
+  typeof new Date(1999, 12, 1, 0, 0),
+  "object",
+  'The value of `typeof new Date(1999, 12, 1, 0, 0)` is expected to be "object"'
+);
+
+assert.notSameValue(
+  new Date(1999, 12, 1, 0, 0),
+  undefined,
+  'new Date(1999, 12, 1, 0, 0) is expected to not equal ``undefined``'
+);
+
+var x83 = new Date(1999, 12, 1, 0, 0);
+assert.sameValue(typeof x83, "object", 'The value of `typeof x83` is expected to be "object"');
+
+var x84 = new Date(1999, 12, 1, 0, 0);
+assert.notSameValue(x84, undefined, 'The value of x84 is expected to not equal ``undefined``');
+
+assert.sameValue(
+  typeof new Date(2000, 0, 1, 0, 0),
+  "object",
+  'The value of `typeof new Date(2000, 0, 1, 0, 0)` is expected to be "object"'
+);
+
+assert.notSameValue(
+  new Date(2000, 0, 1, 0, 0),
+  undefined,
+  'new Date(2000, 0, 1, 0, 0) is expected to not equal ``undefined``'
+);
+
+var x93 = new Date(2000, 0, 1, 0, 0);
+assert.sameValue(typeof x93, "object", 'The value of `typeof x93` is expected to be "object"');
+
+var x94 = new Date(2000, 0, 1, 0, 0);
+assert.notSameValue(x94, undefined, 'The value of x94 is expected to not equal ``undefined``');
+
+assert.sameValue(
+  typeof new Date(2099, 11, 31, 23, 59),
+  "object",
+  'The value of `typeof new Date(2099, 11, 31, 23, 59)` is expected to be "object"'
+);
+
+assert.notSameValue(
+  new Date(2099, 11, 31, 23, 59),
+  undefined,
+  'new Date(2099, 11, 31, 23, 59) is expected to not equal ``undefined``'
+);
+
+var x103 = new Date(2099, 11, 31, 23, 59);
+assert.sameValue(typeof x103, "object", 'The value of `typeof x103` is expected to be "object"');
+
+var x104 = new Date(2099, 11, 31, 23, 59);
+assert.notSameValue(x104, undefined, 'The value of x104 is expected to not equal ``undefined``');
+
+assert.sameValue(
+  typeof new Date(2099, 12, 1, 0, 0),
+  "object",
+  'The value of `typeof new Date(2099, 12, 1, 0, 0)` is expected to be "object"'
+);
+
+assert.notSameValue(
+  new Date(2099, 12, 1, 0, 0),
+  undefined,
+  'new Date(2099, 12, 1, 0, 0) is expected to not equal ``undefined``'
+);
+
+var x113 = new Date(2099, 12, 1, 0, 0);
+assert.sameValue(typeof x113, "object", 'The value of `typeof x113` is expected to be "object"');
+
+var x114 = new Date(2099, 12, 1, 0, 0);
+assert.notSameValue(x114, undefined, 'The value of x114 is expected to not equal ``undefined``');
+
+assert.sameValue(
+  typeof new Date(2100, 0, 1, 0, 0),
+  "object",
+  'The value of `typeof new Date(2100, 0, 1, 0, 0)` is expected to be "object"'
+);
+
+assert.notSameValue(
+  new Date(2100, 0, 1, 0, 0),
+  undefined,
+  'new Date(2100, 0, 1, 0, 0) is expected to not equal ``undefined``'
+);
+
+var x123 = new Date(2100, 0, 1, 0, 0);
+assert.sameValue(typeof x123, "object", 'The value of `typeof x123` is expected to be "object"');
+
+var x124 = new Date(2100, 0, 1, 0, 0);
+assert.notSameValue(x124, undefined, 'The value of x124 is expected to not equal ``undefined``');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/S15.9.3.1_A1_T5.js b/js/src/tests/test262/built-ins/Date/S15.9.3.1_A1_T5.js
new file mode 100644
index 0000000000..440c5cea98
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/S15.9.3.1_A1_T5.js
@@ -0,0 +1,227 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    When Date is called as part of a new expression it is
+    a constructor: it initializes the newly created object
+esid: sec-date-year-month-date-hours-minutes-seconds-ms
+description: 6 arguments, (year, month, date, hours, minutes, seconds)
+---*/
+assert.sameValue(
+  typeof new Date(1899, 11, 31, 23, 59, 59),
+  "object",
+  'The value of `typeof new Date(1899, 11, 31, 23, 59, 59)` is expected to be "object"'
+);
+
+assert.notSameValue(
+  new Date(1899, 11, 31, 23, 59, 59),
+  undefined,
+  'new Date(1899, 11, 31, 23, 59, 59) is expected to not equal ``undefined``'
+);
+
+var x13 = new Date(1899, 11, 31, 23, 59, 59);
+assert.sameValue(typeof x13, "object", 'The value of `typeof x13` is expected to be "object"');
+
+var x14 = new Date(1899, 11, 31, 23, 59, 59);
+assert.notSameValue(x14, undefined, 'The value of x14 is expected to not equal ``undefined``');
+
+assert.sameValue(
+  typeof new Date(1899, 12, 1, 0, 0, 0),
+  "object",
+  'The value of `typeof new Date(1899, 12, 1, 0, 0, 0)` is expected to be "object"'
+);
+
+assert.notSameValue(
+  new Date(1899, 12, 1, 0, 0, 0),
+  undefined,
+  'new Date(1899, 12, 1, 0, 0, 0) is expected to not equal ``undefined``'
+);
+
+var x23 = new Date(1899, 12, 1, 0, 0, 0);
+assert.sameValue(typeof x23, "object", 'The value of `typeof x23` is expected to be "object"');
+
+var x24 = new Date(1899, 12, 1, 0, 0, 0);
+assert.notSameValue(x24, undefined, 'The value of x24 is expected to not equal ``undefined``');
+
+assert.sameValue(
+  typeof new Date(1900, 0, 1, 0, 0, 0),
+  "object",
+  'The value of `typeof new Date(1900, 0, 1, 0, 0, 0)` is expected to be "object"'
+);
+
+assert.notSameValue(
+  new Date(1900, 0, 1, 0, 0, 0),
+  undefined,
+  'new Date(1900, 0, 1, 0, 0, 0) is expected to not equal ``undefined``'
+);
+
+var x33 = new Date(1900, 0, 1, 0, 0, 0);
+assert.sameValue(typeof x33, "object", 'The value of `typeof x33` is expected to be "object"');
+
+var x34 = new Date(1900, 0, 1, 0, 0, 0);
+assert.notSameValue(x34, undefined, 'The value of x34 is expected to not equal ``undefined``');
+
+assert.sameValue(
+  typeof new Date(1969, 11, 31, 23, 59, 59),
+  "object",
+  'The value of `typeof new Date(1969, 11, 31, 23, 59, 59)` is expected to be "object"'
+);
+
+assert.notSameValue(
+  new Date(1969, 11, 31, 23, 59, 59),
+  undefined,
+  'new Date(1969, 11, 31, 23, 59, 59) is expected to not equal ``undefined``'
+);
+
+var x43 = new Date(1969, 11, 31, 23, 59, 59);
+assert.sameValue(typeof x43, "object", 'The value of `typeof x43` is expected to be "object"');
+
+var x44 = new Date(1969, 11, 31, 23, 59, 59);
+assert.notSameValue(x44, undefined, 'The value of x44 is expected to not equal ``undefined``');
+
+assert.sameValue(
+  typeof new Date(1969, 12, 1, 0, 0, 0),
+  "object",
+  'The value of `typeof new Date(1969, 12, 1, 0, 0, 0)` is expected to be "object"'
+);
+
+assert.notSameValue(
+  new Date(1969, 12, 1, 0, 0, 0),
+  undefined,
+  'new Date(1969, 12, 1, 0, 0, 0) is expected to not equal ``undefined``'
+);
+
+var x53 = new Date(1969, 12, 1, 0, 0, 0);
+assert.sameValue(typeof x53, "object", 'The value of `typeof x53` is expected to be "object"');
+
+var x54 = new Date(1969, 12, 1, 0, 0, 0);
+assert.notSameValue(x54, undefined, 'The value of x54 is expected to not equal ``undefined``');
+
+assert.sameValue(
+  typeof new Date(1970, 0, 1, 0, 0, 0),
+  "object",
+  'The value of `typeof new Date(1970, 0, 1, 0, 0, 0)` is expected to be "object"'
+);
+
+assert.notSameValue(
+  new Date(1970, 0, 1, 0, 0, 0),
+  undefined,
+  'new Date(1970, 0, 1, 0, 0, 0) is expected to not equal ``undefined``'
+);
+
+var x63 = new Date(1970, 0, 1, 0, 0, 0);
+assert.sameValue(typeof x63, "object", 'The value of `typeof x63` is expected to be "object"');
+
+var x64 = new Date(1970, 0, 1, 0, 0, 0);
+assert.notSameValue(x64, undefined, 'The value of x64 is expected to not equal ``undefined``');
+
+assert.sameValue(
+  typeof new Date(1999, 11, 31, 23, 59, 59),
+  "object",
+  'The value of `typeof new Date(1999, 11, 31, 23, 59, 59)` is expected to be "object"'
+);
+
+assert.notSameValue(
+  new Date(1999, 11, 31, 23, 59, 59),
+  undefined,
+  'new Date(1999, 11, 31, 23, 59, 59) is expected to not equal ``undefined``'
+);
+
+var x73 = new Date(1999, 11, 31, 23, 59, 59);
+assert.sameValue(typeof x73, "object", 'The value of `typeof x73` is expected to be "object"');
+
+var x74 = new Date(1999, 11, 31, 23, 59, 59);
+assert.notSameValue(x74, undefined, 'The value of x74 is expected to not equal ``undefined``');
+
+assert.sameValue(
+  typeof new Date(1999, 12, 1, 0, 0, 0),
+  "object",
+  'The value of `typeof new Date(1999, 12, 1, 0, 0, 0)` is expected to be "object"'
+);
+
+assert.notSameValue(
+  new Date(1999, 12, 1, 0, 0, 0),
+  undefined,
+  'new Date(1999, 12, 1, 0, 0, 0) is expected to not equal ``undefined``'
+);
+
+var x83 = new Date(1999, 12, 1, 0, 0, 0);
+assert.sameValue(typeof x83, "object", 'The value of `typeof x83` is expected to be "object"');
+
+var x84 = new Date(1999, 12, 1, 0, 0, 0);
+assert.notSameValue(x84, undefined, 'The value of x84 is expected to not equal ``undefined``');
+
+assert.sameValue(
+  typeof new Date(2000, 0, 1, 0, 0, 0),
+  "object",
+  'The value of `typeof new Date(2000, 0, 1, 0, 0, 0)` is expected to be "object"'
+);
+
+assert.notSameValue(
+  new Date(2000, 0, 1, 0, 0, 0),
+  undefined,
+  'new Date(2000, 0, 1, 0, 0, 0) is expected to not equal ``undefined``'
+);
+
+var x93 = new Date(2000, 0, 1, 0, 0, 0);
+assert.sameValue(typeof x93, "object", 'The value of `typeof x93` is expected to be "object"');
+
+var x94 = new Date(2000, 0, 1, 0, 0, 0);
+assert.notSameValue(x94, undefined, 'The value of x94 is expected to not equal ``undefined``');
+
+assert.sameValue(
+  typeof new Date(2099, 11, 31, 23, 59, 59),
+  "object",
+  'The value of `typeof new Date(2099, 11, 31, 23, 59, 59)` is expected to be "object"'
+);
+
+assert.notSameValue(
+  new Date(2099, 11, 31, 23, 59, 59),
+  undefined,
+  'new Date(2099, 11, 31, 23, 59, 59) is expected to not equal ``undefined``'
+);
+
+var x103 = new Date(2099, 11, 31, 23, 59, 59);
+assert.sameValue(typeof x103, "object", 'The value of `typeof x103` is expected to be "object"');
+
+var x104 = new Date(2099, 11, 31, 23, 59, 59);
+assert.notSameValue(x104, undefined, 'The value of x104 is expected to not equal ``undefined``');
+
+assert.sameValue(
+  typeof new Date(2099, 12, 1, 0, 0, 0),
+  "object",
+  'The value of `typeof new Date(2099, 12, 1, 0, 0, 0)` is expected to be "object"'
+);
+
+assert.notSameValue(
+  new Date(2099, 12, 1, 0, 0, 0),
+  undefined,
+  'new Date(2099, 12, 1, 0, 0, 0) is expected to not equal ``undefined``'
+);
+
+var x113 = new Date(2099, 12, 1, 0, 0, 0);
+assert.sameValue(typeof x113, "object", 'The value of `typeof x113` is expected to be "object"');
+
+var x114 = new Date(2099, 12, 1, 0, 0, 0);
+assert.notSameValue(x114, undefined, 'The value of x114 is expected to not equal ``undefined``');
+
+assert.sameValue(
+  typeof new Date(2100, 0, 1, 0, 0, 0),
+  "object",
+  'The value of `typeof new Date(2100, 0, 1, 0, 0, 0)` is expected to be "object"'
+);
+
+assert.notSameValue(
+  new Date(2100, 0, 1, 0, 0, 0),
+  undefined,
+  'new Date(2100, 0, 1, 0, 0, 0) is expected to not equal ``undefined``'
+);
+
+var x123 = new Date(2100, 0, 1, 0, 0, 0);
+assert.sameValue(typeof x123, "object", 'The value of `typeof x123` is expected to be "object"');
+
+var x124 = new Date(2100, 0, 1, 0, 0, 0);
+assert.notSameValue(x124, undefined, 'The value of x124 is expected to not equal ``undefined``');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/S15.9.3.1_A1_T6.js b/js/src/tests/test262/built-ins/Date/S15.9.3.1_A1_T6.js
new file mode 100644
index 0000000000..51b960e152
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/S15.9.3.1_A1_T6.js
@@ -0,0 +1,227 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    When Date is called as part of a new expression it is
+    a constructor: it initializes the newly created object
+esid: sec-date-year-month-date-hours-minutes-seconds-ms
+description: 7 arguments, (year, month, date, hours, minutes, seconds, ms)
+---*/
+assert.sameValue(
+  typeof new Date(1899, 11, 31, 23, 59, 59, 999),
+  "object",
+  'The value of `typeof new Date(1899, 11, 31, 23, 59, 59, 999)` is expected to be "object"'
+);
+
+assert.notSameValue(
+  new Date(1899, 11, 31, 23, 59, 59, 999),
+  undefined,
+  'new Date(1899, 11, 31, 23, 59, 59, 999) is expected to not equal ``undefined``'
+);
+
+var x13 = new Date(1899, 11, 31, 23, 59, 59, 999);
+assert.sameValue(typeof x13, "object", 'The value of `typeof x13` is expected to be "object"');
+
+var x14 = new Date(1899, 11, 31, 23, 59, 59, 999);
+assert.notSameValue(x14, undefined, 'The value of x14 is expected to not equal ``undefined``');
+
+assert.sameValue(
+  typeof new Date(1899, 12, 1, 0, 0, 0, 0),
+  "object",
+  'The value of `typeof new Date(1899, 12, 1, 0, 0, 0, 0)` is expected to be "object"'
+);
+
+assert.notSameValue(
+  new Date(1899, 12, 1, 0, 0, 0, 0),
+  undefined,
+  'new Date(1899, 12, 1, 0, 0, 0, 0) is expected to not equal ``undefined``'
+);
+
+var x23 = new Date(1899, 12, 1, 0, 0, 0, 0);
+assert.sameValue(typeof x23, "object", 'The value of `typeof x23` is expected to be "object"');
+
+var x24 = new Date(1899, 12, 1, 0, 0, 0, 0);
+assert.notSameValue(x24, undefined, 'The value of x24 is expected to not equal ``undefined``');
+
+assert.sameValue(
+  typeof new Date(1900, 0, 1, 0, 0, 0, 0),
+  "object",
+  'The value of `typeof new Date(1900, 0, 1, 0, 0, 0, 0)` is expected to be "object"'
+);
+
+assert.notSameValue(
+  new Date(1900, 0, 1, 0, 0, 0, 0),
+  undefined,
+  'new Date(1900, 0, 1, 0, 0, 0, 0) is expected to not equal ``undefined``'
+);
+
+var x33 = new Date(1900, 0, 1, 0, 0, 0, 0);
+assert.sameValue(typeof x33, "object", 'The value of `typeof x33` is expected to be "object"');
+
+var x34 = new Date(1900, 0, 1, 0, 0, 0, 0);
+assert.notSameValue(x34, undefined, 'The value of x34 is expected to not equal ``undefined``');
+
+assert.sameValue(
+  typeof new Date(1969, 11, 31, 23, 59, 59, 999),
+  "object",
+  'The value of `typeof new Date(1969, 11, 31, 23, 59, 59, 999)` is expected to be "object"'
+);
+
+assert.notSameValue(
+  new Date(1969, 11, 31, 23, 59, 59, 999),
+  undefined,
+  'new Date(1969, 11, 31, 23, 59, 59, 999) is expected to not equal ``undefined``'
+);
+
+var x43 = new Date(1969, 11, 31, 23, 59, 59, 999);
+assert.sameValue(typeof x43, "object", 'The value of `typeof x43` is expected to be "object"');
+
+var x44 = new Date(1969, 11, 31, 23, 59, 59, 999);
+assert.notSameValue(x44, undefined, 'The value of x44 is expected to not equal ``undefined``');
+
+assert.sameValue(
+  typeof new Date(1969, 12, 1, 0, 0, 0, 0),
+  "object",
+  'The value of `typeof new Date(1969, 12, 1, 0, 0, 0, 0)` is expected to be "object"'
+);
+
+assert.notSameValue(
+  new Date(1969, 12, 1, 0, 0, 0, 0),
+  undefined,
+  'new Date(1969, 12, 1, 0, 0, 0, 0) is expected to not equal ``undefined``'
+);
+
+var x53 = new Date(1969, 12, 1, 0, 0, 0, 0);
+assert.sameValue(typeof x53, "object", 'The value of `typeof x53` is expected to be "object"');
+
+var x54 = new Date(1969, 12, 1, 0, 0, 0, 0);
+assert.notSameValue(x54, undefined, 'The value of x54 is expected to not equal ``undefined``');
+
+assert.sameValue(
+  typeof new Date(1970, 0, 1, 0, 0, 0, 0),
+  "object",
+  'The value of `typeof new Date(1970, 0, 1, 0, 0, 0, 0)` is expected to be "object"'
+);
+
+assert.notSameValue(
+  new Date(1970, 0, 1, 0, 0, 0, 0),
+  undefined,
+  'new Date(1970, 0, 1, 0, 0, 0, 0) is expected to not equal ``undefined``'
+);
+
+var x63 = new Date(1970, 0, 1, 0, 0, 0, 0);
+assert.sameValue(typeof x63, "object", 'The value of `typeof x63` is expected to be "object"');
+
+var x64 = new Date(1970, 0, 1, 0, 0, 0, 0);
+assert.notSameValue(x64, undefined, 'The value of x64 is expected to not equal ``undefined``');
+
+assert.sameValue(
+  typeof new Date(1999, 11, 31, 23, 59, 59, 999),
+  "object",
+  'The value of `typeof new Date(1999, 11, 31, 23, 59, 59, 999)` is expected to be "object"'
+);
+
+assert.notSameValue(
+  new Date(1999, 11, 31, 23, 59, 59, 999),
+  undefined,
+  'new Date(1999, 11, 31, 23, 59, 59, 999) is expected to not equal ``undefined``'
+);
+
+var x73 = new Date(1999, 11, 31, 23, 59, 59, 999);
+assert.sameValue(typeof x73, "object", 'The value of `typeof x73` is expected to be "object"');
+
+var x74 = new Date(1999, 11, 31, 23, 59, 59, 999);
+assert.notSameValue(x74, undefined, 'The value of x74 is expected to not equal ``undefined``');
+
+assert.sameValue(
+  typeof new Date(1999, 12, 1, 0, 0, 0, 0),
+  "object",
+  'The value of `typeof new Date(1999, 12, 1, 0, 0, 0, 0)` is expected to be "object"'
+);
+
+assert.notSameValue(
+  new Date(1999, 12, 1, 0, 0, 0, 0),
+  undefined,
+  'new Date(1999, 12, 1, 0, 0, 0, 0) is expected to not equal ``undefined``'
+);
+
+var x83 = new Date(1999, 12, 1, 0, 0, 0, 0);
+assert.sameValue(typeof x83, "object", 'The value of `typeof x83` is expected to be "object"');
+
+var x84 = new Date(1999, 12, 1, 0, 0, 0, 0);
+assert.notSameValue(x84, undefined, 'The value of x84 is expected to not equal ``undefined``');
+
+assert.sameValue(
+  typeof new Date(2000, 0, 1, 0, 0, 0, 0),
+  "object",
+  'The value of `typeof new Date(2000, 0, 1, 0, 0, 0, 0)` is expected to be "object"'
+);
+
+assert.notSameValue(
+  new Date(2000, 0, 1, 0, 0, 0, 0),
+  undefined,
+  'new Date(2000, 0, 1, 0, 0, 0, 0) is expected to not equal ``undefined``'
+);
+
+var x93 = new Date(2000, 0, 1, 0, 0, 0, 0);
+assert.sameValue(typeof x93, "object", 'The value of `typeof x93` is expected to be "object"');
+
+var x94 = new Date(2000, 0, 1, 0, 0, 0, 0);
+assert.notSameValue(x94, undefined, 'The value of x94 is expected to not equal ``undefined``');
+
+assert.sameValue(
+  typeof new Date(2099, 11, 31, 23, 59, 59, 999),
+  "object",
+  'The value of `typeof new Date(2099, 11, 31, 23, 59, 59, 999)` is expected to be "object"'
+);
+
+assert.notSameValue(
+  new Date(2099, 11, 31, 23, 59, 59, 999),
+  undefined,
+  'new Date(2099, 11, 31, 23, 59, 59, 999) is expected to not equal ``undefined``'
+);
+
+var x103 = new Date(2099, 11, 31, 23, 59, 59, 999);
+assert.sameValue(typeof x103, "object", 'The value of `typeof x103` is expected to be "object"');
+
+var x104 = new Date(2099, 11, 31, 23, 59, 59, 999);
+assert.notSameValue(x104, undefined, 'The value of x104 is expected to not equal ``undefined``');
+
+assert.sameValue(
+  typeof new Date(2099, 12, 1, 0, 0, 0, 0),
+  "object",
+  'The value of `typeof new Date(2099, 12, 1, 0, 0, 0, 0)` is expected to be "object"'
+);
+
+assert.notSameValue(
+  new Date(2099, 12, 1, 0, 0, 0, 0),
+  undefined,
+  'new Date(2099, 12, 1, 0, 0, 0, 0) is expected to not equal ``undefined``'
+);
+
+var x113 = new Date(2099, 12, 1, 0, 0, 0, 0);
+assert.sameValue(typeof x113, "object", 'The value of `typeof x113` is expected to be "object"');
+
+var x114 = new Date(2099, 12, 1, 0, 0, 0, 0);
+assert.notSameValue(x114, undefined, 'The value of x114 is expected to not equal ``undefined``');
+
+assert.sameValue(
+  typeof new Date(2100, 0, 1, 0, 0, 0, 0),
+  "object",
+  'The value of `typeof new Date(2100, 0, 1, 0, 0, 0, 0)` is expected to be "object"'
+);
+
+assert.notSameValue(
+  new Date(2100, 0, 1, 0, 0, 0, 0),
+  undefined,
+  'new Date(2100, 0, 1, 0, 0, 0, 0) is expected to not equal ``undefined``'
+);
+
+var x123 = new Date(2100, 0, 1, 0, 0, 0, 0);
+assert.sameValue(typeof x123, "object", 'The value of `typeof x123` is expected to be "object"');
+
+var x124 = new Date(2100, 0, 1, 0, 0, 0, 0);
+assert.notSameValue(x124, undefined, 'The value of x124 is expected to not equal ``undefined``');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/S15.9.3.1_A2_T1.js b/js/src/tests/test262/built-ins/Date/S15.9.3.1_A2_T1.js
new file mode 100644
index 0000000000..54e4ea72f2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/S15.9.3.1_A2_T1.js
@@ -0,0 +1,241 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The [[Prototype]] property of the newly constructed object
+    is set to the original Date prototype object, the one that is the
+    initial value of Date.prototype
+esid: sec-date-year-month-date-hours-minutes-seconds-ms
+description: 2 arguments, (year, month)
+---*/
+
+var x11 = new Date(1899, 11);
+
+assert.sameValue(
+  typeof x11.constructor.prototype,
+  "object",
+  'The value of `typeof x11.constructor.prototype` is expected to be "object"'
+);
+
+var x12 = new Date(1899, 11);
+assert(Date.prototype.isPrototypeOf(x12), 'Date.prototype.isPrototypeOf(x12) must return true');
+
+var x13 = new Date(1899, 11);
+
+assert.sameValue(
+  Date.prototype,
+  x13.constructor.prototype,
+  'The value of Date.prototype is expected to equal the value of x13.constructor.prototype'
+);
+
+var x21 = new Date(1899, 12);
+
+assert.sameValue(
+  typeof x21.constructor.prototype,
+  "object",
+  'The value of `typeof x21.constructor.prototype` is expected to be "object"'
+);
+
+var x22 = new Date(1899, 12);
+assert(Date.prototype.isPrototypeOf(x22), 'Date.prototype.isPrototypeOf(x22) must return true');
+
+var x23 = new Date(1899, 12);
+
+assert.sameValue(
+  Date.prototype,
+  x23.constructor.prototype,
+  'The value of Date.prototype is expected to equal the value of x23.constructor.prototype'
+);
+
+var x31 = new Date(1900, 0);
+
+assert.sameValue(
+  typeof x31.constructor.prototype,
+  "object",
+  'The value of `typeof x31.constructor.prototype` is expected to be "object"'
+);
+
+var x32 = new Date(1900, 0);
+assert(Date.prototype.isPrototypeOf(x32), 'Date.prototype.isPrototypeOf(x32) must return true');
+
+var x33 = new Date(1900, 0);
+
+assert.sameValue(
+  Date.prototype,
+  x33.constructor.prototype,
+  'The value of Date.prototype is expected to equal the value of x33.constructor.prototype'
+);
+
+var x41 = new Date(1969, 11);
+
+assert.sameValue(
+  typeof x41.constructor.prototype,
+  "object",
+  'The value of `typeof x41.constructor.prototype` is expected to be "object"'
+);
+
+var x42 = new Date(1969, 11);
+assert(Date.prototype.isPrototypeOf(x42), 'Date.prototype.isPrototypeOf(x42) must return true');
+
+var x43 = new Date(1969, 11);
+
+assert.sameValue(
+  Date.prototype,
+  x43.constructor.prototype,
+  'The value of Date.prototype is expected to equal the value of x43.constructor.prototype'
+);
+
+var x51 = new Date(1969, 12);
+
+assert.sameValue(
+  typeof x51.constructor.prototype,
+  "object",
+  'The value of `typeof x51.constructor.prototype` is expected to be "object"'
+);
+
+var x52 = new Date(1969, 12);
+assert(Date.prototype.isPrototypeOf(x52), 'Date.prototype.isPrototypeOf(x52) must return true');
+
+var x53 = new Date(1969, 12);
+
+assert.sameValue(
+  Date.prototype,
+  x53.constructor.prototype,
+  'The value of Date.prototype is expected to equal the value of x53.constructor.prototype'
+);
+
+var x61 = new Date(1970, 0);
+
+assert.sameValue(
+  typeof x61.constructor.prototype,
+  "object",
+  'The value of `typeof x61.constructor.prototype` is expected to be "object"'
+);
+
+var x62 = new Date(1970, 0);
+assert(Date.prototype.isPrototypeOf(x62), 'Date.prototype.isPrototypeOf(x62) must return true');
+
+var x63 = new Date(1970, 0);
+
+assert.sameValue(
+  Date.prototype,
+  x63.constructor.prototype,
+  'The value of Date.prototype is expected to equal the value of x63.constructor.prototype'
+);
+
+var x71 = new Date(1999, 11);
+
+assert.sameValue(
+  typeof x71.constructor.prototype,
+  "object",
+  'The value of `typeof x71.constructor.prototype` is expected to be "object"'
+);
+
+var x72 = new Date(1999, 11);
+assert(Date.prototype.isPrototypeOf(x72), 'Date.prototype.isPrototypeOf(x72) must return true');
+
+var x73 = new Date(1999, 11);
+
+assert.sameValue(
+  Date.prototype,
+  x73.constructor.prototype,
+  'The value of Date.prototype is expected to equal the value of x73.constructor.prototype'
+);
+
+var x81 = new Date(1999, 12);
+
+assert.sameValue(
+  typeof x81.constructor.prototype,
+  "object",
+  'The value of `typeof x81.constructor.prototype` is expected to be "object"'
+);
+
+var x82 = new Date(1999, 12);
+assert(Date.prototype.isPrototypeOf(x82), 'Date.prototype.isPrototypeOf(x82) must return true');
+
+var x83 = new Date(1999, 12);
+
+assert.sameValue(
+  Date.prototype,
+  x83.constructor.prototype,
+  'The value of Date.prototype is expected to equal the value of x83.constructor.prototype'
+);
+
+var x91 = new Date(2000, 0);
+
+assert.sameValue(
+  typeof x91.constructor.prototype,
+  "object",
+  'The value of `typeof x91.constructor.prototype` is expected to be "object"'
+);
+
+var x92 = new Date(2000, 0);
+assert(Date.prototype.isPrototypeOf(x92), 'Date.prototype.isPrototypeOf(x92) must return true');
+
+var x93 = new Date(2000, 0);
+
+assert.sameValue(
+  Date.prototype,
+  x93.constructor.prototype,
+  'The value of Date.prototype is expected to equal the value of x93.constructor.prototype'
+);
+
+var x101 = new Date(2099, 11);
+
+assert.sameValue(
+  typeof x101.constructor.prototype,
+  "object",
+  'The value of `typeof x101.constructor.prototype` is expected to be "object"'
+);
+
+var x102 = new Date(2099, 11);
+assert(Date.prototype.isPrototypeOf(x102), 'Date.prototype.isPrototypeOf(x102) must return true');
+
+var x103 = new Date(2099, 11);
+
+assert.sameValue(
+  Date.prototype,
+  x103.constructor.prototype,
+  'The value of Date.prototype is expected to equal the value of x103.constructor.prototype'
+);
+
+var x111 = new Date(2099, 12);
+
+assert.sameValue(
+  typeof x111.constructor.prototype,
+  "object",
+  'The value of `typeof x111.constructor.prototype` is expected to be "object"'
+);
+
+var x112 = new Date(2099, 12);
+assert(Date.prototype.isPrototypeOf(x112), 'Date.prototype.isPrototypeOf(x112) must return true');
+
+var x113 = new Date(2099, 12);
+
+assert.sameValue(
+  Date.prototype,
+  x113.constructor.prototype,
+  'The value of Date.prototype is expected to equal the value of x113.constructor.prototype'
+);
+
+var x121 = new Date(2100, 0);
+
+assert.sameValue(
+  typeof x121.constructor.prototype,
+  "object",
+  'The value of `typeof x121.constructor.prototype` is expected to be "object"'
+);
+
+var x122 = new Date(2100, 0);
+assert(Date.prototype.isPrototypeOf(x122), 'Date.prototype.isPrototypeOf(x122) must return true');
+
+var x123 = new Date(2100, 0);
+
+assert.sameValue(
+  Date.prototype,
+  x123.constructor.prototype,
+  'The value of Date.prototype is expected to equal the value of x123.constructor.prototype'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/S15.9.3.1_A2_T2.js b/js/src/tests/test262/built-ins/Date/S15.9.3.1_A2_T2.js
new file mode 100644
index 0000000000..442fe547bc
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/S15.9.3.1_A2_T2.js
@@ -0,0 +1,241 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The [[Prototype]] property of the newly constructed object
+    is set to the original Date prototype object, the one that is the
+    initial value of Date.prototype
+esid: sec-date-year-month-date-hours-minutes-seconds-ms
+description: 3 arguments, (year, month, date)
+---*/
+
+var x11 = new Date(1899, 11, 31);
+
+assert.sameValue(
+  typeof x11.constructor.prototype,
+  "object",
+  'The value of `typeof x11.constructor.prototype` is expected to be "object"'
+);
+
+var x12 = new Date(1899, 11, 31);
+assert(Date.prototype.isPrototypeOf(x12), 'Date.prototype.isPrototypeOf(x12) must return true');
+
+var x13 = new Date(1899, 11, 31);
+
+assert.sameValue(
+  Date.prototype,
+  x13.constructor.prototype,
+  'The value of Date.prototype is expected to equal the value of x13.constructor.prototype'
+);
+
+var x21 = new Date(1899, 12, 1);
+
+assert.sameValue(
+  typeof x21.constructor.prototype,
+  "object",
+  'The value of `typeof x21.constructor.prototype` is expected to be "object"'
+);
+
+var x22 = new Date(1899, 12, 1);
+assert(Date.prototype.isPrototypeOf(x22), 'Date.prototype.isPrototypeOf(x22) must return true');
+
+var x23 = new Date(1899, 12, 1);
+
+assert.sameValue(
+  Date.prototype,
+  x23.constructor.prototype,
+  'The value of Date.prototype is expected to equal the value of x23.constructor.prototype'
+);
+
+var x31 = new Date(1900, 0, 1);
+
+assert.sameValue(
+  typeof x31.constructor.prototype,
+  "object",
+  'The value of `typeof x31.constructor.prototype` is expected to be "object"'
+);
+
+var x32 = new Date(1900, 0, 1);
+assert(Date.prototype.isPrototypeOf(x32), 'Date.prototype.isPrototypeOf(x32) must return true');
+
+var x33 = new Date(1900, 0, 1);
+
+assert.sameValue(
+  Date.prototype,
+  x33.constructor.prototype,
+  'The value of Date.prototype is expected to equal the value of x33.constructor.prototype'
+);
+
+var x41 = new Date(1969, 11, 31);
+
+assert.sameValue(
+  typeof x41.constructor.prototype,
+  "object",
+  'The value of `typeof x41.constructor.prototype` is expected to be "object"'
+);
+
+var x42 = new Date(1969, 11, 31);
+assert(Date.prototype.isPrototypeOf(x42), 'Date.prototype.isPrototypeOf(x42) must return true');
+
+var x43 = new Date(1969, 11, 31);
+
+assert.sameValue(
+  Date.prototype,
+  x43.constructor.prototype,
+  'The value of Date.prototype is expected to equal the value of x43.constructor.prototype'
+);
+
+var x51 = new Date(1969, 12, 1);
+
+assert.sameValue(
+  typeof x51.constructor.prototype,
+  "object",
+  'The value of `typeof x51.constructor.prototype` is expected to be "object"'
+);
+
+var x52 = new Date(1969, 12, 1);
+assert(Date.prototype.isPrototypeOf(x52), 'Date.prototype.isPrototypeOf(x52) must return true');
+
+var x53 = new Date(1969, 12, 1);
+
+assert.sameValue(
+  Date.prototype,
+  x53.constructor.prototype,
+  'The value of Date.prototype is expected to equal the value of x53.constructor.prototype'
+);
+
+var x61 = new Date(1970, 0, 1);
+
+assert.sameValue(
+  typeof x61.constructor.prototype,
+  "object",
+  'The value of `typeof x61.constructor.prototype` is expected to be "object"'
+);
+
+var x62 = new Date(1970, 0, 1);
+assert(Date.prototype.isPrototypeOf(x62), 'Date.prototype.isPrototypeOf(x62) must return true');
+
+var x63 = new Date(1970, 0, 1);
+
+assert.sameValue(
+  Date.prototype,
+  x63.constructor.prototype,
+  'The value of Date.prototype is expected to equal the value of x63.constructor.prototype'
+);
+
+var x71 = new Date(1999, 11, 31);
+
+assert.sameValue(
+  typeof x71.constructor.prototype,
+  "object",
+  'The value of `typeof x71.constructor.prototype` is expected to be "object"'
+);
+
+var x72 = new Date(1999, 11, 31);
+assert(Date.prototype.isPrototypeOf(x72), 'Date.prototype.isPrototypeOf(x72) must return true');
+
+var x73 = new Date(1999, 11, 31);
+
+assert.sameValue(
+  Date.prototype,
+  x73.constructor.prototype,
+  'The value of Date.prototype is expected to equal the value of x73.constructor.prototype'
+);
+
+var x81 = new Date(1999, 12, 1);
+
+assert.sameValue(
+  typeof x81.constructor.prototype,
+  "object",
+  'The value of `typeof x81.constructor.prototype` is expected to be "object"'
+);
+
+var x82 = new Date(1999, 12, 1);
+assert(Date.prototype.isPrototypeOf(x82), 'Date.prototype.isPrototypeOf(x82) must return true');
+
+var x83 = new Date(1999, 12, 1);
+
+assert.sameValue(
+  Date.prototype,
+  x83.constructor.prototype,
+  'The value of Date.prototype is expected to equal the value of x83.constructor.prototype'
+);
+
+var x91 = new Date(2000, 0, 1);
+
+assert.sameValue(
+  typeof x91.constructor.prototype,
+  "object",
+  'The value of `typeof x91.constructor.prototype` is expected to be "object"'
+);
+
+var x92 = new Date(2000, 0, 1);
+assert(Date.prototype.isPrototypeOf(x92), 'Date.prototype.isPrototypeOf(x92) must return true');
+
+var x93 = new Date(2000, 0, 1);
+
+assert.sameValue(
+  Date.prototype,
+  x93.constructor.prototype,
+  'The value of Date.prototype is expected to equal the value of x93.constructor.prototype'
+);
+
+var x101 = new Date(2099, 11, 31);
+
+assert.sameValue(
+  typeof x101.constructor.prototype,
+  "object",
+  'The value of `typeof x101.constructor.prototype` is expected to be "object"'
+);
+
+var x102 = new Date(2099, 11, 31);
+assert(Date.prototype.isPrototypeOf(x102), 'Date.prototype.isPrototypeOf(x102) must return true');
+
+var x103 = new Date(2099, 11, 31);
+
+assert.sameValue(
+  Date.prototype,
+  x103.constructor.prototype,
+  'The value of Date.prototype is expected to equal the value of x103.constructor.prototype'
+);
+
+var x111 = new Date(2099, 12, 1);
+
+assert.sameValue(
+  typeof x111.constructor.prototype,
+  "object",
+  'The value of `typeof x111.constructor.prototype` is expected to be "object"'
+);
+
+var x112 = new Date(2099, 12, 1);
+assert(Date.prototype.isPrototypeOf(x112), 'Date.prototype.isPrototypeOf(x112) must return true');
+
+var x113 = new Date(2099, 12, 1);
+
+assert.sameValue(
+  Date.prototype,
+  x113.constructor.prototype,
+  'The value of Date.prototype is expected to equal the value of x113.constructor.prototype'
+);
+
+var x121 = new Date(2100, 0, 1);
+
+assert.sameValue(
+  typeof x121.constructor.prototype,
+  "object",
+  'The value of `typeof x121.constructor.prototype` is expected to be "object"'
+);
+
+var x122 = new Date(2100, 0, 1);
+assert(Date.prototype.isPrototypeOf(x122), 'Date.prototype.isPrototypeOf(x122) must return true');
+
+var x123 = new Date(2100, 0, 1);
+
+assert.sameValue(
+  Date.prototype,
+  x123.constructor.prototype,
+  'The value of Date.prototype is expected to equal the value of x123.constructor.prototype'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/S15.9.3.1_A2_T3.js b/js/src/tests/test262/built-ins/Date/S15.9.3.1_A2_T3.js
new file mode 100644
index 0000000000..4e720182c7
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/S15.9.3.1_A2_T3.js
@@ -0,0 +1,241 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The [[Prototype]] property of the newly constructed object
+    is set to the original Date prototype object, the one that is the
+    initial value of Date.prototype
+esid: sec-date-year-month-date-hours-minutes-seconds-ms
+description: 4 arguments, (year, month, date, hours)
+---*/
+
+var x11 = new Date(1899, 11, 31, 23);
+
+assert.sameValue(
+  typeof x11.constructor.prototype,
+  "object",
+  'The value of `typeof x11.constructor.prototype` is expected to be "object"'
+);
+
+var x12 = new Date(1899, 11, 31, 23);
+assert(Date.prototype.isPrototypeOf(x12), 'Date.prototype.isPrototypeOf(x12) must return true');
+
+var x13 = new Date(1899, 11, 31, 23);
+
+assert.sameValue(
+  Date.prototype,
+  x13.constructor.prototype,
+  'The value of Date.prototype is expected to equal the value of x13.constructor.prototype'
+);
+
+var x21 = new Date(1899, 12, 1, 0);
+
+assert.sameValue(
+  typeof x21.constructor.prototype,
+  "object",
+  'The value of `typeof x21.constructor.prototype` is expected to be "object"'
+);
+
+var x22 = new Date(1899, 12, 1, 0);
+assert(Date.prototype.isPrototypeOf(x22), 'Date.prototype.isPrototypeOf(x22) must return true');
+
+var x23 = new Date(1899, 12, 1, 0);
+
+assert.sameValue(
+  Date.prototype,
+  x23.constructor.prototype,
+  'The value of Date.prototype is expected to equal the value of x23.constructor.prototype'
+);
+
+var x31 = new Date(1900, 0, 1, 0);
+
+assert.sameValue(
+  typeof x31.constructor.prototype,
+  "object",
+  'The value of `typeof x31.constructor.prototype` is expected to be "object"'
+);
+
+var x32 = new Date(1900, 0, 1, 0);
+assert(Date.prototype.isPrototypeOf(x32), 'Date.prototype.isPrototypeOf(x32) must return true');
+
+var x33 = new Date(1900, 0, 1, 0);
+
+assert.sameValue(
+  Date.prototype,
+  x33.constructor.prototype,
+  'The value of Date.prototype is expected to equal the value of x33.constructor.prototype'
+);
+
+var x41 = new Date(1969, 11, 31, 23);
+
+assert.sameValue(
+  typeof x41.constructor.prototype,
+  "object",
+  'The value of `typeof x41.constructor.prototype` is expected to be "object"'
+);
+
+var x42 = new Date(1969, 11, 31, 23);
+assert(Date.prototype.isPrototypeOf(x42), 'Date.prototype.isPrototypeOf(x42) must return true');
+
+var x43 = new Date(1969, 11, 31, 23);
+
+assert.sameValue(
+  Date.prototype,
+  x43.constructor.prototype,
+  'The value of Date.prototype is expected to equal the value of x43.constructor.prototype'
+);
+
+var x51 = new Date(1969, 12, 1, 0);
+
+assert.sameValue(
+  typeof x51.constructor.prototype,
+  "object",
+  'The value of `typeof x51.constructor.prototype` is expected to be "object"'
+);
+
+var x52 = new Date(1969, 12, 1, 0);
+assert(Date.prototype.isPrototypeOf(x52), 'Date.prototype.isPrototypeOf(x52) must return true');
+
+var x53 = new Date(1969, 12, 1, 0);
+
+assert.sameValue(
+  Date.prototype,
+  x53.constructor.prototype,
+  'The value of Date.prototype is expected to equal the value of x53.constructor.prototype'
+);
+
+var x61 = new Date(1970, 0, 1, 0);
+
+assert.sameValue(
+  typeof x61.constructor.prototype,
+  "object",
+  'The value of `typeof x61.constructor.prototype` is expected to be "object"'
+);
+
+var x62 = new Date(1970, 0, 1, 0);
+assert(Date.prototype.isPrototypeOf(x62), 'Date.prototype.isPrototypeOf(x62) must return true');
+
+var x63 = new Date(1970, 0, 1, 0);
+
+assert.sameValue(
+  Date.prototype,
+  x63.constructor.prototype,
+  'The value of Date.prototype is expected to equal the value of x63.constructor.prototype'
+);
+
+var x71 = new Date(1999, 11, 31, 23);
+
+assert.sameValue(
+  typeof x71.constructor.prototype,
+  "object",
+  'The value of `typeof x71.constructor.prototype` is expected to be "object"'
+);
+
+var x72 = new Date(1999, 11, 31, 23);
+assert(Date.prototype.isPrototypeOf(x72), 'Date.prototype.isPrototypeOf(x72) must return true');
+
+var x73 = new Date(1999, 11, 31, 23);
+
+assert.sameValue(
+  Date.prototype,
+  x73.constructor.prototype,
+  'The value of Date.prototype is expected to equal the value of x73.constructor.prototype'
+);
+
+var x81 = new Date(1999, 12, 1, 0);
+
+assert.sameValue(
+  typeof x81.constructor.prototype,
+  "object",
+  'The value of `typeof x81.constructor.prototype` is expected to be "object"'
+);
+
+var x82 = new Date(1999, 12, 1, 0);
+assert(Date.prototype.isPrototypeOf(x82), 'Date.prototype.isPrototypeOf(x82) must return true');
+
+var x83 = new Date(1999, 12, 1, 0);
+
+assert.sameValue(
+  Date.prototype,
+  x83.constructor.prototype,
+  'The value of Date.prototype is expected to equal the value of x83.constructor.prototype'
+);
+
+var x91 = new Date(2000, 0, 1, 0);
+
+assert.sameValue(
+  typeof x91.constructor.prototype,
+  "object",
+  'The value of `typeof x91.constructor.prototype` is expected to be "object"'
+);
+
+var x92 = new Date(2000, 0, 1, 0);
+assert(Date.prototype.isPrototypeOf(x92), 'Date.prototype.isPrototypeOf(x92) must return true');
+
+var x93 = new Date(2000, 0, 1, 0);
+
+assert.sameValue(
+  Date.prototype,
+  x93.constructor.prototype,
+  'The value of Date.prototype is expected to equal the value of x93.constructor.prototype'
+);
+
+var x101 = new Date(2099, 11, 31, 23);
+
+assert.sameValue(
+  typeof x101.constructor.prototype,
+  "object",
+  'The value of `typeof x101.constructor.prototype` is expected to be "object"'
+);
+
+var x102 = new Date(2099, 11, 31, 23);
+assert(Date.prototype.isPrototypeOf(x102), 'Date.prototype.isPrototypeOf(x102) must return true');
+
+var x103 = new Date(2099, 11, 31, 23);
+
+assert.sameValue(
+  Date.prototype,
+  x103.constructor.prototype,
+  'The value of Date.prototype is expected to equal the value of x103.constructor.prototype'
+);
+
+var x111 = new Date(2099, 12, 1, 0);
+
+assert.sameValue(
+  typeof x111.constructor.prototype,
+  "object",
+  'The value of `typeof x111.constructor.prototype` is expected to be "object"'
+);
+
+var x112 = new Date(2099, 12, 1, 0);
+assert(Date.prototype.isPrototypeOf(x112), 'Date.prototype.isPrototypeOf(x112) must return true');
+
+var x113 = new Date(2099, 12, 1, 0);
+
+assert.sameValue(
+  Date.prototype,
+  x113.constructor.prototype,
+  'The value of Date.prototype is expected to equal the value of x113.constructor.prototype'
+);
+
+var x121 = new Date(2100, 0, 1, 0);
+
+assert.sameValue(
+  typeof x121.constructor.prototype,
+  "object",
+  'The value of `typeof x121.constructor.prototype` is expected to be "object"'
+);
+
+var x122 = new Date(2100, 0, 1, 0);
+assert(Date.prototype.isPrototypeOf(x122), 'Date.prototype.isPrototypeOf(x122) must return true');
+
+var x123 = new Date(2100, 0, 1, 0);
+
+assert.sameValue(
+  Date.prototype,
+  x123.constructor.prototype,
+  'The value of Date.prototype is expected to equal the value of x123.constructor.prototype'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/S15.9.3.1_A2_T4.js b/js/src/tests/test262/built-ins/Date/S15.9.3.1_A2_T4.js
new file mode 100644
index 0000000000..74f6c89a85
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/S15.9.3.1_A2_T4.js
@@ -0,0 +1,241 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The [[Prototype]] property of the newly constructed object
+    is set to the original Date prototype object, the one that is the
+    initial value of Date.prototype
+esid: sec-date-year-month-date-hours-minutes-seconds-ms
+description: 5 arguments, (year, month, date, hours, minutes)
+---*/
+
+var x11 = new Date(1899, 11, 31, 23, 59);
+
+assert.sameValue(
+  typeof x11.constructor.prototype,
+  "object",
+  'The value of `typeof x11.constructor.prototype` is expected to be "object"'
+);
+
+var x12 = new Date(1899, 11, 31, 23, 59);
+assert(Date.prototype.isPrototypeOf(x12), 'Date.prototype.isPrototypeOf(x12) must return true');
+
+var x13 = new Date(1899, 11, 31, 23, 59);
+
+assert.sameValue(
+  Date.prototype,
+  x13.constructor.prototype,
+  'The value of Date.prototype is expected to equal the value of x13.constructor.prototype'
+);
+
+var x21 = new Date(1899, 12, 1, 0, 0);
+
+assert.sameValue(
+  typeof x21.constructor.prototype,
+  "object",
+  'The value of `typeof x21.constructor.prototype` is expected to be "object"'
+);
+
+var x22 = new Date(1899, 12, 1, 0, 0);
+assert(Date.prototype.isPrototypeOf(x22), 'Date.prototype.isPrototypeOf(x22) must return true');
+
+var x23 = new Date(1899, 12, 1, 0, 0);
+
+assert.sameValue(
+  Date.prototype,
+  x23.constructor.prototype,
+  'The value of Date.prototype is expected to equal the value of x23.constructor.prototype'
+);
+
+var x31 = new Date(1900, 0, 1, 0, 0);
+
+assert.sameValue(
+  typeof x31.constructor.prototype,
+  "object",
+  'The value of `typeof x31.constructor.prototype` is expected to be "object"'
+);
+
+var x32 = new Date(1900, 0, 1, 0, 0);
+assert(Date.prototype.isPrototypeOf(x32), 'Date.prototype.isPrototypeOf(x32) must return true');
+
+var x33 = new Date(1900, 0, 1, 0, 0);
+
+assert.sameValue(
+  Date.prototype,
+  x33.constructor.prototype,
+  'The value of Date.prototype is expected to equal the value of x33.constructor.prototype'
+);
+
+var x41 = new Date(1969, 11, 31, 23, 59);
+
+assert.sameValue(
+  typeof x41.constructor.prototype,
+  "object",
+  'The value of `typeof x41.constructor.prototype` is expected to be "object"'
+);
+
+var x42 = new Date(1969, 11, 31, 23, 59);
+assert(Date.prototype.isPrototypeOf(x42), 'Date.prototype.isPrototypeOf(x42) must return true');
+
+var x43 = new Date(1969, 11, 31, 23, 59);
+
+assert.sameValue(
+  Date.prototype,
+  x43.constructor.prototype,
+  'The value of Date.prototype is expected to equal the value of x43.constructor.prototype'
+);
+
+var x51 = new Date(1969, 12, 1, 0, 0);
+
+assert.sameValue(
+  typeof x51.constructor.prototype,
+  "object",
+  'The value of `typeof x51.constructor.prototype` is expected to be "object"'
+);
+
+var x52 = new Date(1969, 12, 1, 0, 0);
+assert(Date.prototype.isPrototypeOf(x52), 'Date.prototype.isPrototypeOf(x52) must return true');
+
+var x53 = new Date(1969, 12, 1, 0, 0);
+
+assert.sameValue(
+  Date.prototype,
+  x53.constructor.prototype,
+  'The value of Date.prototype is expected to equal the value of x53.constructor.prototype'
+);
+
+var x61 = new Date(1970, 0, 1, 0, 0);
+
+assert.sameValue(
+  typeof x61.constructor.prototype,
+  "object",
+  'The value of `typeof x61.constructor.prototype` is expected to be "object"'
+);
+
+var x62 = new Date(1970, 0, 1, 0, 0);
+assert(Date.prototype.isPrototypeOf(x62), 'Date.prototype.isPrototypeOf(x62) must return true');
+
+var x63 = new Date(1970, 0, 1, 0, 0);
+
+assert.sameValue(
+  Date.prototype,
+  x63.constructor.prototype,
+  'The value of Date.prototype is expected to equal the value of x63.constructor.prototype'
+);
+
+var x71 = new Date(1999, 11, 31, 23, 59);
+
+assert.sameValue(
+  typeof x71.constructor.prototype,
+  "object",
+  'The value of `typeof x71.constructor.prototype` is expected to be "object"'
+);
+
+var x72 = new Date(1999, 11, 31, 23, 59);
+assert(Date.prototype.isPrototypeOf(x72), 'Date.prototype.isPrototypeOf(x72) must return true');
+
+var x73 = new Date(1999, 11, 31, 23, 59);
+
+assert.sameValue(
+  Date.prototype,
+  x73.constructor.prototype,
+  'The value of Date.prototype is expected to equal the value of x73.constructor.prototype'
+);
+
+var x81 = new Date(1999, 12, 1, 0, 0);
+
+assert.sameValue(
+  typeof x81.constructor.prototype,
+  "object",
+  'The value of `typeof x81.constructor.prototype` is expected to be "object"'
+);
+
+var x82 = new Date(1999, 12, 1, 0, 0);
+assert(Date.prototype.isPrototypeOf(x82), 'Date.prototype.isPrototypeOf(x82) must return true');
+
+var x83 = new Date(1999, 12, 1, 0, 0);
+
+assert.sameValue(
+  Date.prototype,
+  x83.constructor.prototype,
+  'The value of Date.prototype is expected to equal the value of x83.constructor.prototype'
+);
+
+var x91 = new Date(2000, 0, 1, 0, 0);
+
+assert.sameValue(
+  typeof x91.constructor.prototype,
+  "object",
+  'The value of `typeof x91.constructor.prototype` is expected to be "object"'
+);
+
+var x92 = new Date(2000, 0, 1, 0, 0);
+assert(Date.prototype.isPrototypeOf(x92), 'Date.prototype.isPrototypeOf(x92) must return true');
+
+var x93 = new Date(2000, 0, 1, 0, 0);
+
+assert.sameValue(
+  Date.prototype,
+  x93.constructor.prototype,
+  'The value of Date.prototype is expected to equal the value of x93.constructor.prototype'
+);
+
+var x101 = new Date(2099, 11, 31, 23, 59);
+
+assert.sameValue(
+  typeof x101.constructor.prototype,
+  "object",
+  'The value of `typeof x101.constructor.prototype` is expected to be "object"'
+);
+
+var x102 = new Date(2099, 11, 31, 23, 59);
+assert(Date.prototype.isPrototypeOf(x102), 'Date.prototype.isPrototypeOf(x102) must return true');
+
+var x103 = new Date(2099, 11, 31, 23, 59);
+
+assert.sameValue(
+  Date.prototype,
+  x103.constructor.prototype,
+  'The value of Date.prototype is expected to equal the value of x103.constructor.prototype'
+);
+
+var x111 = new Date(2099, 12, 1, 0, 0);
+
+assert.sameValue(
+  typeof x111.constructor.prototype,
+  "object",
+  'The value of `typeof x111.constructor.prototype` is expected to be "object"'
+);
+
+var x112 = new Date(2099, 12, 1, 0, 0);
+assert(Date.prototype.isPrototypeOf(x112), 'Date.prototype.isPrototypeOf(x112) must return true');
+
+var x113 = new Date(2099, 12, 1, 0, 0);
+
+assert.sameValue(
+  Date.prototype,
+  x113.constructor.prototype,
+  'The value of Date.prototype is expected to equal the value of x113.constructor.prototype'
+);
+
+var x121 = new Date(2100, 0, 1, 0, 0);
+
+assert.sameValue(
+  typeof x121.constructor.prototype,
+  "object",
+  'The value of `typeof x121.constructor.prototype` is expected to be "object"'
+);
+
+var x122 = new Date(2100, 0, 1, 0, 0);
+assert(Date.prototype.isPrototypeOf(x122), 'Date.prototype.isPrototypeOf(x122) must return true');
+
+var x123 = new Date(2100, 0, 1, 0, 0);
+
+assert.sameValue(
+  Date.prototype,
+  x123.constructor.prototype,
+  'The value of Date.prototype is expected to equal the value of x123.constructor.prototype'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/S15.9.3.1_A2_T5.js b/js/src/tests/test262/built-ins/Date/S15.9.3.1_A2_T5.js
new file mode 100644
index 0000000000..047f8a7077
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/S15.9.3.1_A2_T5.js
@@ -0,0 +1,241 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The [[Prototype]] property of the newly constructed object
+    is set to the original Date prototype object, the one that is the
+    initial value of Date.prototype
+esid: sec-date-year-month-date-hours-minutes-seconds-ms
+description: 6 arguments, (year, month, date, hours, minutes, seconds)
+---*/
+
+var x11 = new Date(1899, 11, 31, 23, 59, 59);
+
+assert.sameValue(
+  typeof x11.constructor.prototype,
+  "object",
+  'The value of `typeof x11.constructor.prototype` is expected to be "object"'
+);
+
+var x12 = new Date(1899, 11, 31, 23, 59, 59);
+assert(Date.prototype.isPrototypeOf(x12), 'Date.prototype.isPrototypeOf(x12) must return true');
+
+var x13 = new Date(1899, 11, 31, 23, 59, 59);
+
+assert.sameValue(
+  Date.prototype,
+  x13.constructor.prototype,
+  'The value of Date.prototype is expected to equal the value of x13.constructor.prototype'
+);
+
+var x21 = new Date(1899, 12, 1, 0, 0, 0);
+
+assert.sameValue(
+  typeof x21.constructor.prototype,
+  "object",
+  'The value of `typeof x21.constructor.prototype` is expected to be "object"'
+);
+
+var x22 = new Date(1899, 12, 1, 0, 0, 0);
+assert(Date.prototype.isPrototypeOf(x22), 'Date.prototype.isPrototypeOf(x22) must return true');
+
+var x23 = new Date(1899, 12, 1, 0, 0, 0);
+
+assert.sameValue(
+  Date.prototype,
+  x23.constructor.prototype,
+  'The value of Date.prototype is expected to equal the value of x23.constructor.prototype'
+);
+
+var x31 = new Date(1900, 0, 1, 0, 0, 0);
+
+assert.sameValue(
+  typeof x31.constructor.prototype,
+  "object",
+  'The value of `typeof x31.constructor.prototype` is expected to be "object"'
+);
+
+var x32 = new Date(1900, 0, 1, 0, 0, 0);
+assert(Date.prototype.isPrototypeOf(x32), 'Date.prototype.isPrototypeOf(x32) must return true');
+
+var x33 = new Date(1900, 0, 1, 0, 0, 0);
+
+assert.sameValue(
+  Date.prototype,
+  x33.constructor.prototype,
+  'The value of Date.prototype is expected to equal the value of x33.constructor.prototype'
+);
+
+var x41 = new Date(1969, 11, 31, 23, 59, 59);
+
+assert.sameValue(
+  typeof x41.constructor.prototype,
+  "object",
+  'The value of `typeof x41.constructor.prototype` is expected to be "object"'
+);
+
+var x42 = new Date(1969, 11, 31, 23, 59, 59);
+assert(Date.prototype.isPrototypeOf(x42), 'Date.prototype.isPrototypeOf(x42) must return true');
+
+var x43 = new Date(1969, 11, 31, 23, 59, 59);
+
+assert.sameValue(
+  Date.prototype,
+  x43.constructor.prototype,
+  'The value of Date.prototype is expected to equal the value of x43.constructor.prototype'
+);
+
+var x51 = new Date(1969, 12, 1, 0, 0, 0);
+
+assert.sameValue(
+  typeof x51.constructor.prototype,
+  "object",
+  'The value of `typeof x51.constructor.prototype` is expected to be "object"'
+);
+
+var x52 = new Date(1969, 12, 1, 0, 0, 0);
+assert(Date.prototype.isPrototypeOf(x52), 'Date.prototype.isPrototypeOf(x52) must return true');
+
+var x53 = new Date(1969, 12, 1, 0, 0, 0);
+
+assert.sameValue(
+  Date.prototype,
+  x53.constructor.prototype,
+  'The value of Date.prototype is expected to equal the value of x53.constructor.prototype'
+);
+
+var x61 = new Date(1970, 0, 1, 0, 0, 0);
+
+assert.sameValue(
+  typeof x61.constructor.prototype,
+  "object",
+  'The value of `typeof x61.constructor.prototype` is expected to be "object"'
+);
+
+var x62 = new Date(1970, 0, 1, 0, 0, 0);
+assert(Date.prototype.isPrototypeOf(x62), 'Date.prototype.isPrototypeOf(x62) must return true');
+
+var x63 = new Date(1970, 0, 1, 0, 0, 0);
+
+assert.sameValue(
+  Date.prototype,
+  x63.constructor.prototype,
+  'The value of Date.prototype is expected to equal the value of x63.constructor.prototype'
+);
+
+var x71 = new Date(1999, 11, 31, 23, 59, 59);
+
+assert.sameValue(
+  typeof x71.constructor.prototype,
+  "object",
+  'The value of `typeof x71.constructor.prototype` is expected to be "object"'
+);
+
+var x72 = new Date(1999, 11, 31, 23, 59, 59);
+assert(Date.prototype.isPrototypeOf(x72), 'Date.prototype.isPrototypeOf(x72) must return true');
+
+var x73 = new Date(1999, 11, 31, 23, 59, 59);
+
+assert.sameValue(
+  Date.prototype,
+  x73.constructor.prototype,
+  'The value of Date.prototype is expected to equal the value of x73.constructor.prototype'
+);
+
+var x81 = new Date(1999, 12, 1, 0, 0, 0);
+
+assert.sameValue(
+  typeof x81.constructor.prototype,
+  "object",
+  'The value of `typeof x81.constructor.prototype` is expected to be "object"'
+);
+
+var x82 = new Date(1999, 12, 1, 0, 0, 0);
+assert(Date.prototype.isPrototypeOf(x82), 'Date.prototype.isPrototypeOf(x82) must return true');
+
+var x83 = new Date(1999, 12, 1, 0, 0, 0);
+
+assert.sameValue(
+  Date.prototype,
+  x83.constructor.prototype,
+  'The value of Date.prototype is expected to equal the value of x83.constructor.prototype'
+);
+
+var x91 = new Date(2000, 0, 1, 0, 0, 0);
+
+assert.sameValue(
+  typeof x91.constructor.prototype,
+  "object",
+  'The value of `typeof x91.constructor.prototype` is expected to be "object"'
+);
+
+var x92 = new Date(2000, 0, 1, 0, 0, 0);
+assert(Date.prototype.isPrototypeOf(x92), 'Date.prototype.isPrototypeOf(x92) must return true');
+
+var x93 = new Date(2000, 0, 1, 0, 0, 0);
+
+assert.sameValue(
+  Date.prototype,
+  x93.constructor.prototype,
+  'The value of Date.prototype is expected to equal the value of x93.constructor.prototype'
+);
+
+var x101 = new Date(2099, 11, 31, 23, 59, 59);
+
+assert.sameValue(
+  typeof x101.constructor.prototype,
+  "object",
+  'The value of `typeof x101.constructor.prototype` is expected to be "object"'
+);
+
+var x102 = new Date(2099, 11, 31, 23, 59, 59);
+assert(Date.prototype.isPrototypeOf(x102), 'Date.prototype.isPrototypeOf(x102) must return true');
+
+var x103 = new Date(2099, 11, 31, 23, 59, 59);
+
+assert.sameValue(
+  Date.prototype,
+  x103.constructor.prototype,
+  'The value of Date.prototype is expected to equal the value of x103.constructor.prototype'
+);
+
+var x111 = new Date(2099, 12, 1, 0, 0, 0);
+
+assert.sameValue(
+  typeof x111.constructor.prototype,
+  "object",
+  'The value of `typeof x111.constructor.prototype` is expected to be "object"'
+);
+
+var x112 = new Date(2099, 12, 1, 0, 0, 0);
+assert(Date.prototype.isPrototypeOf(x112), 'Date.prototype.isPrototypeOf(x112) must return true');
+
+var x113 = new Date(2099, 12, 1, 0, 0, 0);
+
+assert.sameValue(
+  Date.prototype,
+  x113.constructor.prototype,
+  'The value of Date.prototype is expected to equal the value of x113.constructor.prototype'
+);
+
+var x121 = new Date(2100, 0, 1, 0, 0, 0);
+
+assert.sameValue(
+  typeof x121.constructor.prototype,
+  "object",
+  'The value of `typeof x121.constructor.prototype` is expected to be "object"'
+);
+
+var x122 = new Date(2100, 0, 1, 0, 0, 0);
+assert(Date.prototype.isPrototypeOf(x122), 'Date.prototype.isPrototypeOf(x122) must return true');
+
+var x123 = new Date(2100, 0, 1, 0, 0, 0);
+
+assert.sameValue(
+  Date.prototype,
+  x123.constructor.prototype,
+  'The value of Date.prototype is expected to equal the value of x123.constructor.prototype'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/S15.9.3.1_A2_T6.js b/js/src/tests/test262/built-ins/Date/S15.9.3.1_A2_T6.js
new file mode 100644
index 0000000000..526c1f9d42
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/S15.9.3.1_A2_T6.js
@@ -0,0 +1,241 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The [[Prototype]] property of the newly constructed object
+    is set to the original Date prototype object, the one that is the
+    initial value of Date.prototype
+esid: sec-date-year-month-date-hours-minutes-seconds-ms
+description: 7 arguments, (year, month, date, hours, minutes, seconds, ms)
+---*/
+
+var x11 = new Date(1899, 11, 31, 23, 59, 59, 999);
+
+assert.sameValue(
+  typeof x11.constructor.prototype,
+  "object",
+  'The value of `typeof x11.constructor.prototype` is expected to be "object"'
+);
+
+var x12 = new Date(1899, 11, 31, 23, 59, 59, 999);
+assert(Date.prototype.isPrototypeOf(x12), 'Date.prototype.isPrototypeOf(x12) must return true');
+
+var x13 = new Date(1899, 11, 31, 23, 59, 59, 999);
+
+assert.sameValue(
+  Date.prototype,
+  x13.constructor.prototype,
+  'The value of Date.prototype is expected to equal the value of x13.constructor.prototype'
+);
+
+var x21 = new Date(1899, 12, 1, 0, 0, 0, 0);
+
+assert.sameValue(
+  typeof x21.constructor.prototype,
+  "object",
+  'The value of `typeof x21.constructor.prototype` is expected to be "object"'
+);
+
+var x22 = new Date(1899, 12, 1, 0, 0, 0, 0);
+assert(Date.prototype.isPrototypeOf(x22), 'Date.prototype.isPrototypeOf(x22) must return true');
+
+var x23 = new Date(1899, 12, 1, 0, 0, 0, 0);
+
+assert.sameValue(
+  Date.prototype,
+  x23.constructor.prototype,
+  'The value of Date.prototype is expected to equal the value of x23.constructor.prototype'
+);
+
+var x31 = new Date(1900, 0, 1, 0, 0, 0, 0);
+
+assert.sameValue(
+  typeof x31.constructor.prototype,
+  "object",
+  'The value of `typeof x31.constructor.prototype` is expected to be "object"'
+);
+
+var x32 = new Date(1900, 0, 1, 0, 0, 0, 0);
+assert(Date.prototype.isPrototypeOf(x32), 'Date.prototype.isPrototypeOf(x32) must return true');
+
+var x33 = new Date(1900, 0, 1, 0, 0, 0, 0);
+
+assert.sameValue(
+  Date.prototype,
+  x33.constructor.prototype,
+  'The value of Date.prototype is expected to equal the value of x33.constructor.prototype'
+);
+
+var x41 = new Date(1969, 11, 31, 23, 59, 59, 999);
+
+assert.sameValue(
+  typeof x41.constructor.prototype,
+  "object",
+  'The value of `typeof x41.constructor.prototype` is expected to be "object"'
+);
+
+var x42 = new Date(1969, 11, 31, 23, 59, 59, 999);
+assert(Date.prototype.isPrototypeOf(x42), 'Date.prototype.isPrototypeOf(x42) must return true');
+
+var x43 = new Date(1969, 11, 31, 23, 59, 59, 999);
+
+assert.sameValue(
+  Date.prototype,
+  x43.constructor.prototype,
+  'The value of Date.prototype is expected to equal the value of x43.constructor.prototype'
+);
+
+var x51 = new Date(1969, 12, 1, 0, 0, 0, 0);
+
+assert.sameValue(
+  typeof x51.constructor.prototype,
+  "object",
+  'The value of `typeof x51.constructor.prototype` is expected to be "object"'
+);
+
+var x52 = new Date(1969, 12, 1, 0, 0, 0, 0);
+assert(Date.prototype.isPrototypeOf(x52), 'Date.prototype.isPrototypeOf(x52) must return true');
+
+var x53 = new Date(1969, 12, 1, 0, 0, 0, 0);
+
+assert.sameValue(
+  Date.prototype,
+  x53.constructor.prototype,
+  'The value of Date.prototype is expected to equal the value of x53.constructor.prototype'
+);
+
+var x61 = new Date(1970, 0, 1, 0, 0, 0, 0);
+
+assert.sameValue(
+  typeof x61.constructor.prototype,
+  "object",
+  'The value of `typeof x61.constructor.prototype` is expected to be "object"'
+);
+
+var x62 = new Date(1970, 0, 1, 0, 0, 0, 0);
+assert(Date.prototype.isPrototypeOf(x62), 'Date.prototype.isPrototypeOf(x62) must return true');
+
+var x63 = new Date(1970, 0, 1, 0, 0, 0, 0);
+
+assert.sameValue(
+  Date.prototype,
+  x63.constructor.prototype,
+  'The value of Date.prototype is expected to equal the value of x63.constructor.prototype'
+);
+
+var x71 = new Date(1999, 11, 31, 23, 59, 59, 999);
+
+assert.sameValue(
+  typeof x71.constructor.prototype,
+  "object",
+  'The value of `typeof x71.constructor.prototype` is expected to be "object"'
+);
+
+var x72 = new Date(1999, 11, 31, 23, 59, 59, 999);
+assert(Date.prototype.isPrototypeOf(x72), 'Date.prototype.isPrototypeOf(x72) must return true');
+
+var x73 = new Date(1999, 11, 31, 23, 59, 59, 999);
+
+assert.sameValue(
+  Date.prototype,
+  x73.constructor.prototype,
+  'The value of Date.prototype is expected to equal the value of x73.constructor.prototype'
+);
+
+var x81 = new Date(1999, 12, 1, 0, 0, 0, 0);
+
+assert.sameValue(
+  typeof x81.constructor.prototype,
+  "object",
+  'The value of `typeof x81.constructor.prototype` is expected to be "object"'
+);
+
+var x82 = new Date(1999, 12, 1, 0, 0, 0, 0);
+assert(Date.prototype.isPrototypeOf(x82), 'Date.prototype.isPrototypeOf(x82) must return true');
+
+var x83 = new Date(1999, 12, 1, 0, 0, 0, 0);
+
+assert.sameValue(
+  Date.prototype,
+  x83.constructor.prototype,
+  'The value of Date.prototype is expected to equal the value of x83.constructor.prototype'
+);
+
+var x91 = new Date(2000, 0, 1, 0, 0, 0, 0);
+
+assert.sameValue(
+  typeof x91.constructor.prototype,
+  "object",
+  'The value of `typeof x91.constructor.prototype` is expected to be "object"'
+);
+
+var x92 = new Date(2000, 0, 1, 0, 0, 0, 0);
+assert(Date.prototype.isPrototypeOf(x92), 'Date.prototype.isPrototypeOf(x92) must return true');
+
+var x93 = new Date(2000, 0, 1, 0, 0, 0, 0);
+
+assert.sameValue(
+  Date.prototype,
+  x93.constructor.prototype,
+  'The value of Date.prototype is expected to equal the value of x93.constructor.prototype'
+);
+
+var x101 = new Date(2099, 11, 31, 23, 59, 59, 999);
+
+assert.sameValue(
+  typeof x101.constructor.prototype,
+  "object",
+  'The value of `typeof x101.constructor.prototype` is expected to be "object"'
+);
+
+var x102 = new Date(2099, 11, 31, 23, 59, 59, 999);
+assert(Date.prototype.isPrototypeOf(x102), 'Date.prototype.isPrototypeOf(x102) must return true');
+
+var x103 = new Date(2099, 11, 31, 23, 59, 59, 999);
+
+assert.sameValue(
+  Date.prototype,
+  x103.constructor.prototype,
+  'The value of Date.prototype is expected to equal the value of x103.constructor.prototype'
+);
+
+var x111 = new Date(2099, 12, 1, 0, 0, 0, 0);
+
+assert.sameValue(
+  typeof x111.constructor.prototype,
+  "object",
+  'The value of `typeof x111.constructor.prototype` is expected to be "object"'
+);
+
+var x112 = new Date(2099, 12, 1, 0, 0, 0, 0);
+assert(Date.prototype.isPrototypeOf(x112), 'Date.prototype.isPrototypeOf(x112) must return true');
+
+var x113 = new Date(2099, 12, 1, 0, 0, 0, 0);
+
+assert.sameValue(
+  Date.prototype,
+  x113.constructor.prototype,
+  'The value of Date.prototype is expected to equal the value of x113.constructor.prototype'
+);
+
+var x121 = new Date(2100, 0, 1, 0, 0, 0, 0);
+
+assert.sameValue(
+  typeof x121.constructor.prototype,
+  "object",
+  'The value of `typeof x121.constructor.prototype` is expected to be "object"'
+);
+
+var x122 = new Date(2100, 0, 1, 0, 0, 0, 0);
+assert(Date.prototype.isPrototypeOf(x122), 'Date.prototype.isPrototypeOf(x122) must return true');
+
+var x123 = new Date(2100, 0, 1, 0, 0, 0, 0);
+
+assert.sameValue(
+  Date.prototype,
+  x123.constructor.prototype,
+  'The value of Date.prototype is expected to equal the value of x123.constructor.prototype'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/S15.9.3.1_A3_T1.1.js b/js/src/tests/test262/built-ins/Date/S15.9.3.1_A3_T1.1.js
new file mode 100644
index 0000000000..34eef009a2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/S15.9.3.1_A3_T1.1.js
@@ -0,0 +1,110 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The [[Class]] property of the newly constructed object
+    is set to "Date"
+esid: sec-date-year-month-date-hours-minutes-seconds-ms
+description: >
+    Test based on delete prototype.toString - 2 arguments, (year,
+    month)
+---*/
+
+var x1 = new Date(1899, 11);
+
+assert.sameValue(
+  Object.prototype.toString.call(x1),
+  "[object Date]",
+  'Object.prototype.toString.call(new Date(1899, 11)) must return "[object Date]"'
+);
+
+var x2 = new Date(1899, 12);
+
+assert.sameValue(
+  Object.prototype.toString.call(x2),
+  "[object Date]",
+  'Object.prototype.toString.call(new Date(1899, 12)) must return "[object Date]"'
+);
+
+var x3 = new Date(1900, 0);
+
+assert.sameValue(
+  Object.prototype.toString.call(x3),
+  "[object Date]",
+  'Object.prototype.toString.call(new Date(1900, 0)) must return "[object Date]"'
+);
+
+var x4 = new Date(1969, 11);
+
+assert.sameValue(
+  Object.prototype.toString.call(x4),
+  "[object Date]",
+  'Object.prototype.toString.call(new Date(1969, 11)) must return "[object Date]"'
+);
+
+var x5 = new Date(1969, 12);
+
+assert.sameValue(
+  Object.prototype.toString.call(x5),
+  "[object Date]",
+  'Object.prototype.toString.call(new Date(1969, 12)) must return "[object Date]"'
+);
+
+var x6 = new Date(1970, 0);
+
+assert.sameValue(
+  Object.prototype.toString.call(x6),
+  "[object Date]",
+  'Object.prototype.toString.call(new Date(1970, 0)) must return "[object Date]"'
+);
+
+var x7 = new Date(1999, 11);
+
+assert.sameValue(
+  Object.prototype.toString.call(x7),
+  "[object Date]",
+  'Object.prototype.toString.call(new Date(1999, 11)) must return "[object Date]"'
+);
+
+var x8 = new Date(1999, 12);
+
+assert.sameValue(
+  Object.prototype.toString.call(x8),
+  "[object Date]",
+  'Object.prototype.toString.call(new Date(1999, 12)) must return "[object Date]"'
+);
+
+var x9 = new Date(2000, 0);
+
+assert.sameValue(
+  Object.prototype.toString.call(x9),
+  "[object Date]",
+  'Object.prototype.toString.call(new Date(2000, 0)) must return "[object Date]"'
+);
+
+var x10 = new Date(2099, 11);
+
+assert.sameValue(
+  Object.prototype.toString.call(x10),
+  "[object Date]",
+  'Object.prototype.toString.call(new Date(2099, 11)) must return "[object Date]"'
+);
+
+var x11 = new Date(2099, 12);
+
+assert.sameValue(
+  Object.prototype.toString.call(x11),
+  "[object Date]",
+  'Object.prototype.toString.call(new Date(2099, 12)) must return "[object Date]"'
+);
+
+var x12 = new Date(2100, 0);
+
+assert.sameValue(
+  Object.prototype.toString.call(x12),
+  "[object Date]",
+  'Object.prototype.toString.call(new Date(2100, 0)) must return "[object Date]"'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/S15.9.3.1_A3_T1.2.js b/js/src/tests/test262/built-ins/Date/S15.9.3.1_A3_T1.2.js
new file mode 100644
index 0000000000..abc6e7a2f4
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/S15.9.3.1_A3_T1.2.js
@@ -0,0 +1,52 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The [[Class]] property of the newly constructed object
+    is set to "Date"
+esid: sec-date-year-month-date-hours-minutes-seconds-ms
+description: >
+    Test based on overwriting prototype.toString - 2 arguments, (year,
+    month)
+---*/
+
+Date.prototype.toString = Object.prototype.toString;
+
+var x1 = new Date(1899, 11);
+assert.sameValue(x1.toString(), "[object Date]", 'x1.toString() must return "[object Date]"');
+
+var x2 = new Date(1899, 12);
+assert.sameValue(x2.toString(), "[object Date]", 'x2.toString() must return "[object Date]"');
+
+var x3 = new Date(1900, 0);
+assert.sameValue(x3.toString(), "[object Date]", 'x3.toString() must return "[object Date]"');
+
+var x4 = new Date(1969, 11);
+assert.sameValue(x4.toString(), "[object Date]", 'x4.toString() must return "[object Date]"');
+
+var x5 = new Date(1969, 12);
+assert.sameValue(x5.toString(), "[object Date]", 'x5.toString() must return "[object Date]"');
+
+var x6 = new Date(1970, 0);
+assert.sameValue(x6.toString(), "[object Date]", 'x6.toString() must return "[object Date]"');
+
+var x7 = new Date(1999, 11);
+assert.sameValue(x7.toString(), "[object Date]", 'x7.toString() must return "[object Date]"');
+
+var x8 = new Date(1999, 12);
+assert.sameValue(x8.toString(), "[object Date]", 'x8.toString() must return "[object Date]"');
+
+var x9 = new Date(2000, 0);
+assert.sameValue(x9.toString(), "[object Date]", 'x9.toString() must return "[object Date]"');
+
+var x10 = new Date(2099, 11);
+assert.sameValue(x10.toString(), "[object Date]", 'x10.toString() must return "[object Date]"');
+
+var x11 = new Date(2099, 12);
+assert.sameValue(x11.toString(), "[object Date]", 'x11.toString() must return "[object Date]"');
+
+var x12 = new Date(2100, 0);
+assert.sameValue(x12.toString(), "[object Date]", 'x12.toString() must return "[object Date]"');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/S15.9.3.1_A3_T2.1.js b/js/src/tests/test262/built-ins/Date/S15.9.3.1_A3_T2.1.js
new file mode 100644
index 0000000000..97bdfc01d1
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/S15.9.3.1_A3_T2.1.js
@@ -0,0 +1,110 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The [[Class]] property of the newly constructed object
+    is set to "Date"
+esid: sec-date-year-month-date-hours-minutes-seconds-ms
+description: >
+    Test based on delete prototype.toString - 3 arguments, (year,
+    month, date)
+---*/
+
+var x1 = new Date(1899, 11, 31);
+
+assert.sameValue(
+  Object.prototype.toString.call(x1),
+  "[object Date]",
+  'Object.prototype.toString.call(new Date(1899, 11, 31)) must return "[object Date]"'
+);
+
+var x2 = new Date(1899, 12, 1);
+
+assert.sameValue(
+  Object.prototype.toString.call(x2),
+  "[object Date]",
+  'Object.prototype.toString.call(new Date(1899, 12, 1)) must return "[object Date]"'
+);
+
+var x3 = new Date(1900, 0, 1);
+
+assert.sameValue(
+  Object.prototype.toString.call(x3),
+  "[object Date]",
+  'Object.prototype.toString.call(new Date(1900, 0, 1)) must return "[object Date]"'
+);
+
+var x4 = new Date(1969, 11, 31);
+
+assert.sameValue(
+  Object.prototype.toString.call(x4),
+  "[object Date]",
+  'Object.prototype.toString.call(new Date(1969, 11, 31)) must return "[object Date]"'
+);
+
+var x5 = new Date(1969, 12, 1);
+
+assert.sameValue(
+  Object.prototype.toString.call(x5),
+  "[object Date]",
+  'Object.prototype.toString.call(new Date(1969, 12, 1)) must return "[object Date]"'
+);
+
+var x6 = new Date(1970, 0, 1);
+
+assert.sameValue(
+  Object.prototype.toString.call(x6),
+  "[object Date]",
+  'Object.prototype.toString.call(new Date(1970, 0, 1)) must return "[object Date]"'
+);
+
+var x7 = new Date(1999, 11, 31);
+
+assert.sameValue(
+  Object.prototype.toString.call(x7),
+  "[object Date]",
+  'Object.prototype.toString.call(new Date(1999, 11, 31)) must return "[object Date]"'
+);
+
+var x8 = new Date(1999, 12, 1);
+
+assert.sameValue(
+  Object.prototype.toString.call(x8),
+  "[object Date]",
+  'Object.prototype.toString.call(new Date(1999, 12, 1)) must return "[object Date]"'
+);
+
+var x9 = new Date(2000, 0, 1);
+
+assert.sameValue(
+  Object.prototype.toString.call(x9),
+  "[object Date]",
+  'Object.prototype.toString.call(new Date(2000, 0, 1)) must return "[object Date]"'
+);
+
+var x10 = new Date(2099, 11, 31);
+
+assert.sameValue(
+  Object.prototype.toString.call(x10),
+  "[object Date]",
+  'Object.prototype.toString.call(new Date(2099, 11, 31)) must return "[object Date]"'
+);
+
+var x11 = new Date(2099, 12, 1);
+
+assert.sameValue(
+  Object.prototype.toString.call(x11),
+  "[object Date]",
+  'Object.prototype.toString.call(new Date(2099, 12, 1)) must return "[object Date]"'
+);
+
+var x12 = new Date(2100, 0, 1);
+
+assert.sameValue(
+  Object.prototype.toString.call(x12),
+  "[object Date]",
+  'Object.prototype.toString.call(new Date(2100, 0, 1)) must return "[object Date]"'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/S15.9.3.1_A3_T2.2.js b/js/src/tests/test262/built-ins/Date/S15.9.3.1_A3_T2.2.js
new file mode 100644
index 0000000000..6720987a68
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/S15.9.3.1_A3_T2.2.js
@@ -0,0 +1,52 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The [[Class]] property of the newly constructed object
+    is set to "Date"
+esid: sec-date-year-month-date-hours-minutes-seconds-ms
+description: >
+    Test based on overwriting prototype.toString - 3 arguments, (year,
+    month, date)
+---*/
+
+Date.prototype.toString = Object.prototype.toString;
+
+var x1 = new Date(1899, 11, 31);
+assert.sameValue(x1.toString(), "[object Date]", 'x1.toString() must return "[object Date]"');
+
+var x2 = new Date(1899, 12, 1);
+assert.sameValue(x2.toString(), "[object Date]", 'x2.toString() must return "[object Date]"');
+
+var x3 = new Date(1900, 0, 1);
+assert.sameValue(x3.toString(), "[object Date]", 'x3.toString() must return "[object Date]"');
+
+var x4 = new Date(1969, 11, 31);
+assert.sameValue(x4.toString(), "[object Date]", 'x4.toString() must return "[object Date]"');
+
+var x5 = new Date(1969, 12, 1);
+assert.sameValue(x5.toString(), "[object Date]", 'x5.toString() must return "[object Date]"');
+
+var x6 = new Date(1970, 0, 1);
+assert.sameValue(x6.toString(), "[object Date]", 'x6.toString() must return "[object Date]"');
+
+var x7 = new Date(1999, 11, 31);
+assert.sameValue(x7.toString(), "[object Date]", 'x7.toString() must return "[object Date]"');
+
+var x8 = new Date(1999, 12, 1);
+assert.sameValue(x8.toString(), "[object Date]", 'x8.toString() must return "[object Date]"');
+
+var x9 = new Date(2000, 0, 1);
+assert.sameValue(x9.toString(), "[object Date]", 'x9.toString() must return "[object Date]"');
+
+var x10 = new Date(2099, 11, 31);
+assert.sameValue(x10.toString(), "[object Date]", 'x10.toString() must return "[object Date]"');
+
+var x11 = new Date(2099, 12, 1);
+assert.sameValue(x11.toString(), "[object Date]", 'x11.toString() must return "[object Date]"');
+
+var x12 = new Date(2100, 0, 1);
+assert.sameValue(x12.toString(), "[object Date]", 'x12.toString() must return "[object Date]"');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/S15.9.3.1_A3_T3.1.js b/js/src/tests/test262/built-ins/Date/S15.9.3.1_A3_T3.1.js
new file mode 100644
index 0000000000..6d64752931
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/S15.9.3.1_A3_T3.1.js
@@ -0,0 +1,110 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The [[Class]] property of the newly constructed object
+    is set to "Date"
+esid: sec-date-year-month-date-hours-minutes-seconds-ms
+description: >
+    Test based on delete prototype.toString - 4 arguments, (year,
+    month, date, hours)
+---*/
+
+var x1 = new Date(1899, 11, 31, 23);
+
+assert.sameValue(
+  Object.prototype.toString.call(x1),
+  "[object Date]",
+  'Object.prototype.toString.call(new Date(1899, 11, 31, 23)) must return "[object Date]"'
+);
+
+var x2 = new Date(1899, 12, 1, 0);
+
+assert.sameValue(
+  Object.prototype.toString.call(x2),
+  "[object Date]",
+  'Object.prototype.toString.call(new Date(1899, 12, 1, 0)) must return "[object Date]"'
+);
+
+var x3 = new Date(1900, 0, 1, 0);
+
+assert.sameValue(
+  Object.prototype.toString.call(x3),
+  "[object Date]",
+  'Object.prototype.toString.call(new Date(1900, 0, 1, 0)) must return "[object Date]"'
+);
+
+var x4 = new Date(1969, 11, 31, 23);
+
+assert.sameValue(
+  Object.prototype.toString.call(x4),
+  "[object Date]",
+  'Object.prototype.toString.call(new Date(1969, 11, 31, 23)) must return "[object Date]"'
+);
+
+var x5 = new Date(1969, 12, 1, 0);
+
+assert.sameValue(
+  Object.prototype.toString.call(x5),
+  "[object Date]",
+  'Object.prototype.toString.call(new Date(1969, 12, 1, 0)) must return "[object Date]"'
+);
+
+var x6 = new Date(1970, 0, 1, 0);
+
+assert.sameValue(
+  Object.prototype.toString.call(x6),
+  "[object Date]",
+  'Object.prototype.toString.call(new Date(1970, 0, 1, 0)) must return "[object Date]"'
+);
+
+var x7 = new Date(1999, 11, 31, 23);
+
+assert.sameValue(
+  Object.prototype.toString.call(x7),
+  "[object Date]",
+  'Object.prototype.toString.call(new Date(1999, 11, 31, 23)) must return "[object Date]"'
+);
+
+var x8 = new Date(1999, 12, 1, 0);
+
+assert.sameValue(
+  Object.prototype.toString.call(x8),
+  "[object Date]",
+  'Object.prototype.toString.call(new Date(1999, 12, 1, 0)) must return "[object Date]"'
+);
+
+var x9 = new Date(2000, 0, 1, 0);
+
+assert.sameValue(
+  Object.prototype.toString.call(x9),
+  "[object Date]",
+  'Object.prototype.toString.call(new Date(2000, 0, 1, 0)) must return "[object Date]"'
+);
+
+var x10 = new Date(2099, 11, 31, 23);
+
+assert.sameValue(
+  Object.prototype.toString.call(x10),
+  "[object Date]",
+  'Object.prototype.toString.call(new Date(2099, 11, 31, 23)) must return "[object Date]"'
+);
+
+var x11 = new Date(2099, 12, 1, 0);
+
+assert.sameValue(
+  Object.prototype.toString.call(x11),
+  "[object Date]",
+  'Object.prototype.toString.call(new Date(2099, 12, 1, 0)) must return "[object Date]"'
+);
+
+var x12 = new Date(2100, 0, 1, 0);
+
+assert.sameValue(
+  Object.prototype.toString.call(x12),
+  "[object Date]",
+  'Object.prototype.toString.call(new Date(2100, 0, 1, 0)) must return "[object Date]"'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/S15.9.3.1_A3_T3.2.js b/js/src/tests/test262/built-ins/Date/S15.9.3.1_A3_T3.2.js
new file mode 100644
index 0000000000..25cf161728
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/S15.9.3.1_A3_T3.2.js
@@ -0,0 +1,52 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The [[Class]] property of the newly constructed object
+    is set to "Date"
+esid: sec-date-year-month-date-hours-minutes-seconds-ms
+description: >
+    Test based on overwriting prototype.toString - 4 arguments, (year,
+    month, date, hours)
+---*/
+
+Date.prototype.toString = Object.prototype.toString;
+
+var x1 = new Date(1899, 11, 31, 23);
+assert.sameValue(x1.toString(), "[object Date]", 'x1.toString() must return "[object Date]"');
+
+var x2 = new Date(1899, 12, 1, 0);
+assert.sameValue(x2.toString(), "[object Date]", 'x2.toString() must return "[object Date]"');
+
+var x3 = new Date(1900, 0, 1, 0);
+assert.sameValue(x3.toString(), "[object Date]", 'x3.toString() must return "[object Date]"');
+
+var x4 = new Date(1969, 11, 31, 23);
+assert.sameValue(x4.toString(), "[object Date]", 'x4.toString() must return "[object Date]"');
+
+var x5 = new Date(1969, 12, 1, 0);
+assert.sameValue(x5.toString(), "[object Date]", 'x5.toString() must return "[object Date]"');
+
+var x6 = new Date(1970, 0, 1, 0);
+assert.sameValue(x6.toString(), "[object Date]", 'x6.toString() must return "[object Date]"');
+
+var x7 = new Date(1999, 11, 31, 23);
+assert.sameValue(x7.toString(), "[object Date]", 'x7.toString() must return "[object Date]"');
+
+var x8 = new Date(1999, 12, 1, 0);
+assert.sameValue(x8.toString(), "[object Date]", 'x8.toString() must return "[object Date]"');
+
+var x9 = new Date(2000, 0, 1, 0);
+assert.sameValue(x9.toString(), "[object Date]", 'x9.toString() must return "[object Date]"');
+
+var x10 = new Date(2099, 11, 31, 23);
+assert.sameValue(x10.toString(), "[object Date]", 'x10.toString() must return "[object Date]"');
+
+var x11 = new Date(2099, 12, 1, 0);
+assert.sameValue(x11.toString(), "[object Date]", 'x11.toString() must return "[object Date]"');
+
+var x12 = new Date(2100, 0, 1, 0);
+assert.sameValue(x12.toString(), "[object Date]", 'x12.toString() must return "[object Date]"');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/S15.9.3.1_A3_T4.1.js b/js/src/tests/test262/built-ins/Date/S15.9.3.1_A3_T4.1.js
new file mode 100644
index 0000000000..35c92fe30b
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/S15.9.3.1_A3_T4.1.js
@@ -0,0 +1,110 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The [[Class]] property of the newly constructed object
+    is set to "Date"
+esid: sec-date-year-month-date-hours-minutes-seconds-ms
+description: >
+    Test based on delete prototype.toString - 5 arguments, (year,
+    month, date, hours, minutes)
+---*/
+
+var x1 = new Date(1899, 11, 31, 23, 59);
+
+assert.sameValue(
+  Object.prototype.toString.call(x1),
+  "[object Date]",
+  'Object.prototype.toString.call(new Date(1899, 11, 31, 23, 59)) must return "[object Date]"'
+);
+
+var x2 = new Date(1899, 12, 1, 0, 0);
+
+assert.sameValue(
+  Object.prototype.toString.call(x2),
+  "[object Date]",
+  'Object.prototype.toString.call(new Date(1899, 12, 1, 0, 0)) must return "[object Date]"'
+);
+
+var x3 = new Date(1900, 0, 1, 0, 0);
+
+assert.sameValue(
+  Object.prototype.toString.call(x3),
+  "[object Date]",
+  'Object.prototype.toString.call(new Date(1900, 0, 1, 0, 0)) must return "[object Date]"'
+);
+
+var x4 = new Date(1969, 11, 31, 23, 59);
+
+assert.sameValue(
+  Object.prototype.toString.call(x4),
+  "[object Date]",
+  'Object.prototype.toString.call(new Date(1969, 11, 31, 23, 59)) must return "[object Date]"'
+);
+
+var x5 = new Date(1969, 12, 1, 0, 0);
+
+assert.sameValue(
+  Object.prototype.toString.call(x5),
+  "[object Date]",
+  'Object.prototype.toString.call(new Date(1969, 12, 1, 0, 0)) must return "[object Date]"'
+);
+
+var x6 = new Date(1970, 0, 1, 0, 0);
+
+assert.sameValue(
+  Object.prototype.toString.call(x6),
+  "[object Date]",
+  'Object.prototype.toString.call(new Date(1970, 0, 1, 0, 0)) must return "[object Date]"'
+);
+
+var x7 = new Date(1999, 11, 31, 23, 59);
+
+assert.sameValue(
+  Object.prototype.toString.call(x7),
+  "[object Date]",
+  'Object.prototype.toString.call(new Date(1999, 11, 31, 23, 59)) must return "[object Date]"'
+);
+
+var x8 = new Date(1999, 12, 1, 0, 0);
+
+assert.sameValue(
+  Object.prototype.toString.call(x8),
+  "[object Date]",
+  'Object.prototype.toString.call(new Date(1999, 12, 1, 0, 0)) must return "[object Date]"'
+);
+
+var x9 = new Date(2000, 0, 1, 0, 0);
+
+assert.sameValue(
+  Object.prototype.toString.call(x9),
+  "[object Date]",
+  'Object.prototype.toString.call(new Date(2000, 0, 1, 0, 0)) must return "[object Date]"'
+);
+
+var x10 = new Date(2099, 11, 31, 23, 59);
+
+assert.sameValue(
+  Object.prototype.toString.call(x10),
+  "[object Date]",
+  'Object.prototype.toString.call(new Date(2099, 11, 31, 23, 59)) must return "[object Date]"'
+);
+
+var x11 = new Date(2099, 12, 1, 0, 0);
+
+assert.sameValue(
+  Object.prototype.toString.call(x11),
+  "[object Date]",
+  'Object.prototype.toString.call(new Date(2099, 12, 1, 0, 0)) must return "[object Date]"'
+);
+
+var x12 = new Date(2100, 0, 1, 0, 0);
+
+assert.sameValue(
+  Object.prototype.toString.call(x12),
+  "[object Date]",
+  'Object.prototype.toString.call(new Date(2100, 0, 1, 0, 0)) must return "[object Date]"'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/S15.9.3.1_A3_T4.2.js b/js/src/tests/test262/built-ins/Date/S15.9.3.1_A3_T4.2.js
new file mode 100644
index 0000000000..455e1dde8f
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/S15.9.3.1_A3_T4.2.js
@@ -0,0 +1,52 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The [[Class]] property of the newly constructed object
+    is set to "Date"
+esid: sec-date-year-month-date-hours-minutes-seconds-ms
+description: >
+    Test based on overwriting prototype.toString - 5 arguments, (year,
+    month, date, hours, minutes)
+---*/
+
+Date.prototype.toString = Object.prototype.toString;
+
+var x1 = new Date(1899, 11, 31, 23, 59);
+assert.sameValue(x1.toString(), "[object Date]", 'x1.toString() must return "[object Date]"');
+
+var x2 = new Date(1899, 12, 1, 0, 0);
+assert.sameValue(x2.toString(), "[object Date]", 'x2.toString() must return "[object Date]"');
+
+var x3 = new Date(1900, 0, 1, 0, 0);
+assert.sameValue(x3.toString(), "[object Date]", 'x3.toString() must return "[object Date]"');
+
+var x4 = new Date(1969, 11, 31, 23, 59);
+assert.sameValue(x4.toString(), "[object Date]", 'x4.toString() must return "[object Date]"');
+
+var x5 = new Date(1969, 12, 1, 0, 0);
+assert.sameValue(x5.toString(), "[object Date]", 'x5.toString() must return "[object Date]"');
+
+var x6 = new Date(1970, 0, 1, 0, 0);
+assert.sameValue(x6.toString(), "[object Date]", 'x6.toString() must return "[object Date]"');
+
+var x7 = new Date(1999, 11, 31, 23, 59);
+assert.sameValue(x7.toString(), "[object Date]", 'x7.toString() must return "[object Date]"');
+
+var x8 = new Date(1999, 12, 1, 0, 0);
+assert.sameValue(x8.toString(), "[object Date]", 'x8.toString() must return "[object Date]"');
+
+var x9 = new Date(2000, 0, 1, 0, 0);
+assert.sameValue(x9.toString(), "[object Date]", 'x9.toString() must return "[object Date]"');
+
+var x10 = new Date(2099, 11, 31, 23, 59);
+assert.sameValue(x10.toString(), "[object Date]", 'x10.toString() must return "[object Date]"');
+
+var x11 = new Date(2099, 12, 1, 0, 0);
+assert.sameValue(x11.toString(), "[object Date]", 'x11.toString() must return "[object Date]"');
+
+var x12 = new Date(2100, 0, 1, 0, 0);
+assert.sameValue(x12.toString(), "[object Date]", 'x12.toString() must return "[object Date]"');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/S15.9.3.1_A3_T5.1.js b/js/src/tests/test262/built-ins/Date/S15.9.3.1_A3_T5.1.js
new file mode 100644
index 0000000000..ce501bf066
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/S15.9.3.1_A3_T5.1.js
@@ -0,0 +1,108 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The [[Class]] property of the newly constructed object
+    is set to "Date"
+esid: sec-date-year-month-date-hours-minutes-seconds-ms
+description: 6 arguments, (year, month, date, hours, minutes, seconds)
+---*/
+
+var x1 = new Date(1899, 11, 31, 23, 59, 59);
+
+assert.sameValue(
+  Object.prototype.toString.call(x1),
+  "[object Date]",
+  'Object.prototype.toString.call(new Date(1899, 11, 31, 23, 59, 59)) must return "[object Date]"'
+);
+
+var x2 = new Date(1899, 12, 1, 0, 0, 0);
+
+assert.sameValue(
+  Object.prototype.toString.call(x2),
+  "[object Date]",
+  'Object.prototype.toString.call(new Date(1899, 12, 1, 0, 0, 0)) must return "[object Date]"'
+);
+
+var x3 = new Date(1900, 0, 1, 0, 0, 0);
+
+assert.sameValue(
+  Object.prototype.toString.call(x3),
+  "[object Date]",
+  'Object.prototype.toString.call(new Date(1900, 0, 1, 0, 0, 0)) must return "[object Date]"'
+);
+
+var x4 = new Date(1969, 11, 31, 23, 59, 59);
+
+assert.sameValue(
+  Object.prototype.toString.call(x4),
+  "[object Date]",
+  'Object.prototype.toString.call(new Date(1969, 11, 31, 23, 59, 59)) must return "[object Date]"'
+);
+
+var x5 = new Date(1969, 12, 1, 0, 0, 0);
+
+assert.sameValue(
+  Object.prototype.toString.call(x5),
+  "[object Date]",
+  'Object.prototype.toString.call(new Date(1969, 12, 1, 0, 0, 0)) must return "[object Date]"'
+);
+
+var x6 = new Date(1970, 0, 1, 0, 0, 0);
+
+assert.sameValue(
+  Object.prototype.toString.call(x6),
+  "[object Date]",
+  'Object.prototype.toString.call(new Date(1970, 0, 1, 0, 0, 0)) must return "[object Date]"'
+);
+
+var x7 = new Date(1999, 11, 31, 23, 59, 59);
+
+assert.sameValue(
+  Object.prototype.toString.call(x7),
+  "[object Date]",
+  'Object.prototype.toString.call(new Date(1999, 11, 31, 23, 59, 59)) must return "[object Date]"'
+);
+
+var x8 = new Date(1999, 12, 1, 0, 0, 0);
+
+assert.sameValue(
+  Object.prototype.toString.call(x8),
+  "[object Date]",
+  'Object.prototype.toString.call(new Date(1999, 12, 1, 0, 0, 0)) must return "[object Date]"'
+);
+
+var x9 = new Date(2000, 0, 1, 0, 0, 0);
+
+assert.sameValue(
+  Object.prototype.toString.call(x9),
+  "[object Date]",
+  'Object.prototype.toString.call(new Date(2000, 0, 1, 0, 0, 0)) must return "[object Date]"'
+);
+
+var x10 = new Date(2099, 11, 31, 23, 59, 59);
+
+assert.sameValue(
+  Object.prototype.toString.call(x10),
+  "[object Date]",
+  'Object.prototype.toString.call(new Date(2099, 11, 31, 23, 59, 59)) must return "[object Date]"'
+);
+
+var x11 = new Date(2099, 12, 1, 0, 0, 0);
+
+assert.sameValue(
+  Object.prototype.toString.call(x11),
+  "[object Date]",
+  'Object.prototype.toString.call(new Date(2099, 12, 1, 0, 0, 0)) must return "[object Date]"'
+);
+
+var x12 = new Date(2100, 0, 1, 0, 0, 0);
+
+assert.sameValue(
+  Object.prototype.toString.call(x12),
+  "[object Date]",
+  'Object.prototype.toString.call(new Date(2100, 0, 1, 0, 0, 0)) must return "[object Date]"'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/S15.9.3.1_A3_T5.2.js b/js/src/tests/test262/built-ins/Date/S15.9.3.1_A3_T5.2.js
new file mode 100644
index 0000000000..3be5840ac2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/S15.9.3.1_A3_T5.2.js
@@ -0,0 +1,52 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The [[Class]] property of the newly constructed object
+    is set to "Date"
+esid: sec-date-year-month-date-hours-minutes-seconds-ms
+description: >
+    Test based on overwriting prototype.toString - 6 arguments, (year,
+    month, date, hours, minutes, seconds)
+---*/
+
+Date.prototype.toString = Object.prototype.toString;
+
+var x1 = new Date(1899, 11, 31, 23, 59, 59);
+assert.sameValue(x1.toString(), "[object Date]", 'x1.toString() must return "[object Date]"');
+
+var x2 = new Date(1899, 12, 1, 0, 0, 0);
+assert.sameValue(x2.toString(), "[object Date]", 'x2.toString() must return "[object Date]"');
+
+var x3 = new Date(1900, 0, 1, 0, 0, 0);
+assert.sameValue(x3.toString(), "[object Date]", 'x3.toString() must return "[object Date]"');
+
+var x4 = new Date(1969, 11, 31, 23, 59, 59);
+assert.sameValue(x4.toString(), "[object Date]", 'x4.toString() must return "[object Date]"');
+
+var x5 = new Date(1969, 12, 1, 0, 0, 0);
+assert.sameValue(x5.toString(), "[object Date]", 'x5.toString() must return "[object Date]"');
+
+var x6 = new Date(1970, 0, 1, 0, 0, 0);
+assert.sameValue(x6.toString(), "[object Date]", 'x6.toString() must return "[object Date]"');
+
+var x7 = new Date(1999, 11, 31, 23, 59, 59);
+assert.sameValue(x7.toString(), "[object Date]", 'x7.toString() must return "[object Date]"');
+
+var x8 = new Date(1999, 12, 1, 0, 0, 0);
+assert.sameValue(x8.toString(), "[object Date]", 'x8.toString() must return "[object Date]"');
+
+var x9 = new Date(2000, 0, 1, 0, 0, 0);
+assert.sameValue(x9.toString(), "[object Date]", 'x9.toString() must return "[object Date]"');
+
+var x10 = new Date(2099, 11, 31, 23, 59, 59);
+assert.sameValue(x10.toString(), "[object Date]", 'x10.toString() must return "[object Date]"');
+
+var x11 = new Date(2099, 12, 1, 0, 0, 0);
+assert.sameValue(x11.toString(), "[object Date]", 'x11.toString() must return "[object Date]"');
+
+var x12 = new Date(2100, 0, 1, 0, 0, 0);
+assert.sameValue(x12.toString(), "[object Date]", 'x12.toString() must return "[object Date]"');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/S15.9.3.1_A3_T6.1.js b/js/src/tests/test262/built-ins/Date/S15.9.3.1_A3_T6.1.js
new file mode 100644
index 0000000000..64e23c493c
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/S15.9.3.1_A3_T6.1.js
@@ -0,0 +1,108 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The [[Class]] property of the newly constructed object
+    is set to "Date"
+esid: sec-date-year-month-date-hours-minutes-seconds-ms
+description: 7 arguments, (year, month, date, hours, minutes, seconds, ms)
+---*/
+
+var x1 = new Date(1899, 11, 31, 23, 59, 59, 999);
+
+assert.sameValue(
+  Object.prototype.toString.call(x1),
+  "[object Date]",
+  'Object.prototype.toString.call(new Date(1899, 11, 31, 23, 59, 59, 999)) must return "[object Date]"'
+);
+
+var x2 = new Date(1899, 12, 1, 0, 0, 0, 0);
+
+assert.sameValue(
+  Object.prototype.toString.call(x2),
+  "[object Date]",
+  'Object.prototype.toString.call(new Date(1899, 12, 1, 0, 0, 0, 0)) must return "[object Date]"'
+);
+
+var x3 = new Date(1900, 0, 1, 0, 0, 0, 0);
+
+assert.sameValue(
+  Object.prototype.toString.call(x3),
+  "[object Date]",
+  'Object.prototype.toString.call(new Date(1900, 0, 1, 0, 0, 0, 0)) must return "[object Date]"'
+);
+
+var x4 = new Date(1969, 11, 31, 23, 59, 59, 999);
+
+assert.sameValue(
+  Object.prototype.toString.call(x4),
+  "[object Date]",
+  'Object.prototype.toString.call(new Date(1969, 11, 31, 23, 59, 59, 999)) must return "[object Date]"'
+);
+
+var x5 = new Date(1969, 12, 1, 0, 0, 0, 0);
+
+assert.sameValue(
+  Object.prototype.toString.call(x5),
+  "[object Date]",
+  'Object.prototype.toString.call(new Date(1969, 12, 1, 0, 0, 0, 0)) must return "[object Date]"'
+);
+
+var x6 = new Date(1970, 0, 1, 0, 0, 0, 0);
+
+assert.sameValue(
+  Object.prototype.toString.call(x6),
+  "[object Date]",
+  'Object.prototype.toString.call(new Date(1970, 0, 1, 0, 0, 0, 0)) must return "[object Date]"'
+);
+
+var x7 = new Date(1999, 11, 31, 23, 59, 59, 999);
+
+assert.sameValue(
+  Object.prototype.toString.call(x7),
+  "[object Date]",
+  'Object.prototype.toString.call(new Date(1999, 11, 31, 23, 59, 59, 999)) must return "[object Date]"'
+);
+
+var x8 = new Date(1999, 12, 1, 0, 0, 0, 0);
+
+assert.sameValue(
+  Object.prototype.toString.call(x8),
+  "[object Date]",
+  'Object.prototype.toString.call(new Date(1999, 12, 1, 0, 0, 0, 0)) must return "[object Date]"'
+);
+
+var x9 = new Date(2000, 0, 1, 0, 0, 0, 0);
+
+assert.sameValue(
+  Object.prototype.toString.call(x9),
+  "[object Date]",
+  'Object.prototype.toString.call(new Date(2000, 0, 1, 0, 0, 0, 0)) must return "[object Date]"'
+);
+
+var x10 = new Date(2099, 11, 31, 23, 59, 59, 999);
+
+assert.sameValue(
+  Object.prototype.toString.call(x10),
+  "[object Date]",
+  'Object.prototype.toString.call(new Date(2099, 11, 31, 23, 59, 59, 999)) must return "[object Date]"'
+);
+
+var x11 = new Date(2099, 12, 1, 0, 0, 0, 0);
+
+assert.sameValue(
+  Object.prototype.toString.call(x11),
+  "[object Date]",
+  'Object.prototype.toString.call(new Date(2099, 12, 1, 0, 0, 0, 0)) must return "[object Date]"'
+);
+
+var x12 = new Date(2100, 0, 1, 0, 0, 0, 0);
+
+assert.sameValue(
+  Object.prototype.toString.call(x12),
+  "[object Date]",
+  'Object.prototype.toString.call(new Date(2100, 0, 1, 0, 0, 0, 0)) must return "[object Date]"'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/S15.9.3.1_A3_T6.2.js b/js/src/tests/test262/built-ins/Date/S15.9.3.1_A3_T6.2.js
new file mode 100644
index 0000000000..2948d766ab
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/S15.9.3.1_A3_T6.2.js
@@ -0,0 +1,52 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The [[Class]] property of the newly constructed object
+    is set to "Date"
+esid: sec-date-year-month-date-hours-minutes-seconds-ms
+description: >
+    Test based on overwriting prototype.toString - 7 arguments, (year,
+    month, date, hours, minutes, seconds, ms)
+---*/
+
+Date.prototype.toString = Object.prototype.toString;
+
+var x1 = new Date(1899, 11, 31, 23, 59, 59, 999);
+assert.sameValue(x1.toString(), "[object Date]", 'x1.toString() must return "[object Date]"');
+
+var x2 = new Date(1899, 12, 1, 0, 0, 0, 0);
+assert.sameValue(x2.toString(), "[object Date]", 'x2.toString() must return "[object Date]"');
+
+var x3 = new Date(1900, 0, 1, 0, 0, 0, 0);
+assert.sameValue(x3.toString(), "[object Date]", 'x3.toString() must return "[object Date]"');
+
+var x4 = new Date(1969, 11, 31, 23, 59, 59, 999);
+assert.sameValue(x4.toString(), "[object Date]", 'x4.toString() must return "[object Date]"');
+
+var x5 = new Date(1969, 12, 1, 0, 0, 0, 0);
+assert.sameValue(x5.toString(), "[object Date]", 'x5.toString() must return "[object Date]"');
+
+var x6 = new Date(1970, 0, 1, 0, 0, 0, 0);
+assert.sameValue(x6.toString(), "[object Date]", 'x6.toString() must return "[object Date]"');
+
+var x7 = new Date(1999, 11, 31, 23, 59, 59, 999);
+assert.sameValue(x7.toString(), "[object Date]", 'x7.toString() must return "[object Date]"');
+
+var x8 = new Date(1999, 12, 1, 0, 0, 0, 0);
+assert.sameValue(x8.toString(), "[object Date]", 'x8.toString() must return "[object Date]"');
+
+var x9 = new Date(2000, 0, 1, 0, 0, 0, 0);
+assert.sameValue(x9.toString(), "[object Date]", 'x9.toString() must return "[object Date]"');
+
+var x10 = new Date(2099, 11, 31, 23, 59, 59, 999);
+assert.sameValue(x10.toString(), "[object Date]", 'x10.toString() must return "[object Date]"');
+
+var x11 = new Date(2099, 12, 1, 0, 0, 0, 0);
+assert.sameValue(x11.toString(), "[object Date]", 'x11.toString() must return "[object Date]"');
+
+var x12 = new Date(2100, 0, 1, 0, 0, 0, 0);
+assert.sameValue(x12.toString(), "[object Date]", 'x12.toString() must return "[object Date]"');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/S15.9.3.1_A4_T0.js b/js/src/tests/test262/built-ins/Date/S15.9.3.1_A4_T0.js
new file mode 100644
index 0000000000..240edee3ed
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/S15.9.3.1_A4_T0.js
@@ -0,0 +1,31 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The [[Value]] property of the newly constructed object
+    is set by following steps:
+    1. Call ToNumber(year)
+    2. Call ToNumber(month)
+    3. If date is supplied use ToNumber(date)
+    4. If hours is supplied use ToNumber(hours)
+    5. If minutes is supplied use ToNumber(minutes)
+    6. If seconds is supplied use ToNumber(seconds)
+    7. If ms is supplied use ToNumber(ms)
+esid: sec-date-year-month-date-hours-minutes-seconds-ms
+description: 1 argument (year)
+---*/
+
+function PoisonedValueOf(val) {
+  this.value = val;
+  this.valueOf = function() {
+    throw new Test262Error();
+  };
+  this.toString = function() {};
+}
+
+assert.throws(Test262Error, () => {
+  new Date(new PoisonedValueOf(1));
+}, '`new Date(new PoisonedValueOf(1))` throws a Test262Error exception');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/S15.9.3.1_A4_T1.js b/js/src/tests/test262/built-ins/Date/S15.9.3.1_A4_T1.js
new file mode 100644
index 0000000000..1614b8cc86
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/S15.9.3.1_A4_T1.js
@@ -0,0 +1,35 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The [[Value]] property of the newly constructed object
+    is set by following steps:
+    1. Call ToNumber(year)
+    2. Call ToNumber(month)
+    3. If date is supplied use ToNumber(date)
+    4. If hours is supplied use ToNumber(hours)
+    5. If minutes is supplied use ToNumber(minutes)
+    6. If seconds is supplied use ToNumber(seconds)
+    7. If ms is supplied use ToNumber(ms)
+esid: sec-date-year-month-date-hours-minutes-seconds-ms
+description: 2 arguments, (year, month)
+---*/
+
+function PoisonedValueOf(val) {
+  this.value = val;
+  this.valueOf = function() {
+    throw new Test262Error();
+  };
+  this.toString = function() {};
+}
+
+assert.throws(Test262Error, () => {
+  new Date(new PoisonedValueOf(1), new PoisonedValueOf(2));
+}, '`new Date(new PoisonedValueOf(1), new PoisonedValueOf(2))` throws a Test262Error exception');
+
+assert.throws(Test262Error, () => {
+  new Date(1, new PoisonedValueOf(2));
+}, '`new Date(1, new PoisonedValueOf(2))` throws a Test262Error exception');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/S15.9.3.1_A4_T2.js b/js/src/tests/test262/built-ins/Date/S15.9.3.1_A4_T2.js
new file mode 100644
index 0000000000..8b8d4a9dd4
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/S15.9.3.1_A4_T2.js
@@ -0,0 +1,39 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The [[Value]] property of the newly constructed object
+    is set by following steps:
+    1. Call ToNumber(year)
+    2. Call ToNumber(month)
+    3. If date is supplied use ToNumber(date)
+    4. If hours is supplied use ToNumber(hours)
+    5. If minutes is supplied use ToNumber(minutes)
+    6. If seconds is supplied use ToNumber(seconds)
+    7. If ms is supplied use ToNumber(ms)
+esid: sec-date-year-month-date-hours-minutes-seconds-ms
+description: 3 arguments, (year, month, date)
+---*/
+
+function PoisonedValueOf(val) {
+  this.value = val;
+  this.valueOf = function() {
+    throw new Test262Error();
+  };
+  this.toString = function() {};
+}
+
+assert.throws(Test262Error, () => {
+  new Date(new PoisonedValueOf(1), new PoisonedValueOf(2), new PoisonedValueOf(3));
+}, '`new Date(new PoisonedValueOf(1), new PoisonedValueOf(2), new PoisonedValueOf(3))` throws a Test262Error exception');
+
+assert.throws(Test262Error, () => {
+  new Date(1, new PoisonedValueOf(2), new PoisonedValueOf(3));
+}, '`new Date(1, new PoisonedValueOf(2), new PoisonedValueOf(3))` throws a Test262Error exception');
+
+assert.throws(Test262Error, () => {
+  new Date(1, 2, new PoisonedValueOf(3));
+}, '`new Date(1, 2, new PoisonedValueOf(3))` throws a Test262Error exception');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/S15.9.3.1_A4_T3.js b/js/src/tests/test262/built-ins/Date/S15.9.3.1_A4_T3.js
new file mode 100644
index 0000000000..99b3cc076a
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/S15.9.3.1_A4_T3.js
@@ -0,0 +1,43 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The [[Value]] property of the newly constructed object
+    is set by following steps:
+    1. Call ToNumber(year)
+    2. Call ToNumber(month)
+    3. If date is supplied use ToNumber(date)
+    4. If hours is supplied use ToNumber(hours)
+    5. If minutes is supplied use ToNumber(minutes)
+    6. If seconds is supplied use ToNumber(seconds)
+    7. If ms is supplied use ToNumber(ms)
+esid: sec-date-year-month-date-hours-minutes-seconds-ms
+description: 4 arguments, (year, month, date, hours)
+---*/
+
+function PoisonedValueOf(val) {
+  this.value = val;
+  this.valueOf = function() {
+    throw new Test262Error();
+  };
+  this.toString = function() {};
+}
+
+assert.throws(Test262Error, () => {
+  new Date(new PoisonedValueOf(1), new PoisonedValueOf(2), new PoisonedValueOf(3), new PoisonedValueOf(4));
+}, '`new Date(new PoisonedValueOf(1), new PoisonedValueOf(2), new PoisonedValueOf(3), new PoisonedValueOf(4))` throws a Test262Error exception');
+
+assert.throws(Test262Error, () => {
+  new Date(1, new PoisonedValueOf(2), new PoisonedValueOf(3), new PoisonedValueOf(4));
+}, '`new Date(1, new PoisonedValueOf(2), new PoisonedValueOf(3), new PoisonedValueOf(4))` throws a Test262Error exception');
+
+assert.throws(Test262Error, () => {
+  new Date(1, 2, new PoisonedValueOf(3), new PoisonedValueOf(4));
+}, '`new Date(1, 2, new PoisonedValueOf(3), new PoisonedValueOf(4))` throws a Test262Error exception');
+
+assert.throws(Test262Error, () => {
+  new Date(1, 2, 3, new PoisonedValueOf(4));
+}, '`new Date(1, 2, 3, new PoisonedValueOf(4))` throws a Test262Error exception');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/S15.9.3.1_A4_T4.js b/js/src/tests/test262/built-ins/Date/S15.9.3.1_A4_T4.js
new file mode 100644
index 0000000000..2decd98348
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/S15.9.3.1_A4_T4.js
@@ -0,0 +1,47 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The [[Value]] property of the newly constructed object
+    is set by following steps:
+    1. Call ToNumber(year)
+    2. Call ToNumber(month)
+    3. If date is supplied use ToNumber(date)
+    4. If hours is supplied use ToNumber(hours)
+    5. If minutes is supplied use ToNumber(minutes)
+    6. If seconds is supplied use ToNumber(seconds)
+    7. If ms is supplied use ToNumber(ms)
+esid: sec-date-year-month-date-hours-minutes-seconds-ms
+description: 5 arguments, (year, month, date, hours, minutes)
+---*/
+
+function PoisonedValueOf(val) {
+  this.value = val;
+  this.valueOf = function() {
+    throw new Test262Error();
+  };
+  this.toString = function() {};
+}
+
+assert.throws(Test262Error, () => {
+  new Date(new PoisonedValueOf(1), new PoisonedValueOf(2), new PoisonedValueOf(3), new PoisonedValueOf(4), new PoisonedValueOf(5));
+}, '`new Date(new PoisonedValueOf(1), new PoisonedValueOf(2), new PoisonedValueOf(3), new PoisonedValueOf(4), new PoisonedValueOf(5))` throws a Test262Error exception');
+
+assert.throws(Test262Error, () => {
+  new Date(1, new PoisonedValueOf(2), new PoisonedValueOf(3), new PoisonedValueOf(4), new PoisonedValueOf(5));
+}, '`new Date(1, new PoisonedValueOf(2), new PoisonedValueOf(3), new PoisonedValueOf(4), new PoisonedValueOf(5))` throws a Test262Error exception');
+
+assert.throws(Test262Error, () => {
+  new Date(1, 2, new PoisonedValueOf(3), new PoisonedValueOf(4), new PoisonedValueOf(5));
+}, '`new Date(1, 2, new PoisonedValueOf(3), new PoisonedValueOf(4), new PoisonedValueOf(5))` throws a Test262Error exception');
+
+assert.throws(Test262Error, () => {
+  new Date(1, 2, 3, new PoisonedValueOf(4), new PoisonedValueOf(5));
+}, '`new Date(1, 2, 3, new PoisonedValueOf(4), new PoisonedValueOf(5))` throws a Test262Error exception');
+
+assert.throws(Test262Error, () => {
+  new Date(1, 2, 3, 4, new PoisonedValueOf(5));
+}, '`new Date(1, 2, 3, 4, new PoisonedValueOf(5))` throws a Test262Error exception');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/S15.9.3.1_A4_T5.js b/js/src/tests/test262/built-ins/Date/S15.9.3.1_A4_T5.js
new file mode 100644
index 0000000000..6908797a68
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/S15.9.3.1_A4_T5.js
@@ -0,0 +1,51 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The [[Value]] property of the newly constructed object
+    is set by following steps:
+    1. Call ToNumber(year)
+    2. Call ToNumber(month)
+    3. If date is supplied use ToNumber(date)
+    4. If hours is supplied use ToNumber(hours)
+    5. If minutes is supplied use ToNumber(minutes)
+    6. If seconds is supplied use ToNumber(seconds)
+    7. If ms is supplied use ToNumber(ms)
+esid: sec-date-year-month-date-hours-minutes-seconds-ms
+description: 6 arguments, (year, month, date, hours, minutes, seconds)
+---*/
+
+function PoisonedValueOf(val) {
+  this.value = val;
+  this.valueOf = function() {
+    throw new Test262Error();
+  };
+  this.toString = function() {};
+}
+
+assert.throws(Test262Error, () => {
+  new Date(new PoisonedValueOf(1), new PoisonedValueOf(2), new PoisonedValueOf(3), new PoisonedValueOf(4), new PoisonedValueOf(5), new PoisonedValueOf(6));
+}, '`new Date(new PoisonedValueOf(1), new PoisonedValueOf(2), new PoisonedValueOf(3), new PoisonedValueOf(4), new PoisonedValueOf(5), new PoisonedValueOf(6))` throws a Test262Error exception');
+
+assert.throws(Test262Error, () => {
+  new Date(1, new PoisonedValueOf(2), new PoisonedValueOf(3), new PoisonedValueOf(4), new PoisonedValueOf(5), new PoisonedValueOf(6));
+}, '`new Date(1, new PoisonedValueOf(2), new PoisonedValueOf(3), new PoisonedValueOf(4), new PoisonedValueOf(5), new PoisonedValueOf(6))` throws a Test262Error exception');
+
+assert.throws(Test262Error, () => {
+  new Date(1, 2, new PoisonedValueOf(3), new PoisonedValueOf(4), new PoisonedValueOf(5), new PoisonedValueOf(6));
+}, '`new Date(1, 2, new PoisonedValueOf(3), new PoisonedValueOf(4), new PoisonedValueOf(5), new PoisonedValueOf(6))` throws a Test262Error exception');
+
+assert.throws(Test262Error, () => {
+  new Date(1, 2, 3, new PoisonedValueOf(4), new PoisonedValueOf(5), new PoisonedValueOf(6));
+}, '`new Date(1, 2, 3, new PoisonedValueOf(4), new PoisonedValueOf(5), new PoisonedValueOf(6))` throws a Test262Error exception');
+
+assert.throws(Test262Error, () => {
+  new Date(1, 2, 3, 4, new PoisonedValueOf(5), new PoisonedValueOf(6));
+}, '`new Date(1, 2, 3, 4, new PoisonedValueOf(5), new PoisonedValueOf(6))` throws a Test262Error exception');
+
+assert.throws(Test262Error, () => {
+  new Date(1, 2, 3, 4, 5, new PoisonedValueOf(6));
+}, '`new Date(1, 2, 3, 4, 5, new PoisonedValueOf(6))` throws a Test262Error exception');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/S15.9.3.1_A4_T6.js b/js/src/tests/test262/built-ins/Date/S15.9.3.1_A4_T6.js
new file mode 100644
index 0000000000..bc0de6ac5c
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/S15.9.3.1_A4_T6.js
@@ -0,0 +1,55 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The [[Value]] property of the newly constructed object
+    is set by following steps:
+    1. Call ToNumber(year)
+    2. Call ToNumber(month)
+    3. If date is supplied use ToNumber(date)
+    4. If hours is supplied use ToNumber(hours)
+    5. If minutes is supplied use ToNumber(minutes)
+    6. If seconds is supplied use ToNumber(seconds)
+    7. If ms is supplied use ToNumber(ms)
+esid: sec-date-year-month-date-hours-minutes-seconds-ms
+description: 7 arguments, (year, month, date, hours, minutes, seconds, ms)
+---*/
+
+function PoisonedValueOf(val) {
+  this.value = val;
+  this.valueOf = function() {
+    throw new Test262Error();
+  };
+  this.toString = function() {};
+}
+
+assert.throws(Test262Error, () => {
+  new Date(new PoisonedValueOf(1), new PoisonedValueOf(2), new PoisonedValueOf(3), new PoisonedValueOf(4), new PoisonedValueOf(5), new PoisonedValueOf(6), new PoisonedValueOf(7));
+}, '`new Date(new PoisonedValueOf(1), new PoisonedValueOf(2), new PoisonedValueOf(3), new PoisonedValueOf(4), new PoisonedValueOf(5), new PoisonedValueOf(6), new PoisonedValueOf(7))` throws a Test262Error exception');
+
+assert.throws(Test262Error, () => {
+  new Date(1, new PoisonedValueOf(2), new PoisonedValueOf(3), new PoisonedValueOf(4), new PoisonedValueOf(5), new PoisonedValueOf(6), new PoisonedValueOf(7));
+}, '`new Date(1, new PoisonedValueOf(2), new PoisonedValueOf(3), new PoisonedValueOf(4), new PoisonedValueOf(5), new PoisonedValueOf(6), new PoisonedValueOf(7))` throws a Test262Error exception');
+
+assert.throws(Test262Error, () => {
+  new Date(1, 2, new PoisonedValueOf(3), new PoisonedValueOf(4), new PoisonedValueOf(5), new PoisonedValueOf(6), new PoisonedValueOf(7));
+}, '`new Date(1, 2, new PoisonedValueOf(3), new PoisonedValueOf(4), new PoisonedValueOf(5), new PoisonedValueOf(6), new PoisonedValueOf(7))` throws a Test262Error exception');
+
+assert.throws(Test262Error, () => {
+  new Date(1, 2, 3, new PoisonedValueOf(4), new PoisonedValueOf(5), new PoisonedValueOf(6), new PoisonedValueOf(7));
+}, '`new Date(1, 2, 3, new PoisonedValueOf(4), new PoisonedValueOf(5), new PoisonedValueOf(6), new PoisonedValueOf(7))` throws a Test262Error exception');
+
+assert.throws(Test262Error, () => {
+  new Date(1, 2, 3, 4, new PoisonedValueOf(5), new PoisonedValueOf(6), new PoisonedValueOf(7));
+}, '`new Date(1, 2, 3, 4, new PoisonedValueOf(5), new PoisonedValueOf(6), new PoisonedValueOf(7))` throws a Test262Error exception');
+
+assert.throws(Test262Error, () => {
+  new Date(1, 2, 3, 4, 5, new PoisonedValueOf(6), new PoisonedValueOf(7));
+}, '`new Date(1, 2, 3, 4, 5, new PoisonedValueOf(6), new PoisonedValueOf(7))` throws a Test262Error exception');
+
+assert.throws(Test262Error, () => {
+  new Date(1, 2, 3, 4, 5, 6, new PoisonedValueOf(7));
+}, '`new Date(1, 2, 3, 4, 5, 6, new PoisonedValueOf(7))` throws a Test262Error exception');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/S15.9.3.1_A5_T1.js b/js/src/tests/test262/built-ins/Date/S15.9.3.1_A5_T1.js
new file mode 100644
index 0000000000..029fabd7e4
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/S15.9.3.1_A5_T1.js
@@ -0,0 +1,43 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+info: |
+    The [[Value]] property of the newly constructed object
+    is set by following steps:
+    8. If Result(1) is not NaN and 0 <= ToInteger(Result(1)) <= 99, Result(8) is
+    1900+ToInteger(Result(1)); otherwise, Result(8) is Result(1)
+    9. Compute MakeDay(Result(8), Result(2), Result(3))
+    10. Compute MakeTime(Result(4), Result(5), Result(6), Result(7))
+    11. Compute MakeDate(Result(9), Result(10))
+    12. Set the [[Value]] property of the newly constructed object to
+    TimeClip(UTC(Result(11)))
+esid: sec-date-year-month-date-hours-minutes-seconds-ms
+description: 2 arguments, (year, month)
+includes: [assertRelativeDateMs.js]
+---*/
+
+assertRelativeDateMs(new Date(1899, 11), -2211667200000);
+
+assertRelativeDateMs(new Date(1899, 12), -2208988800000);
+
+assertRelativeDateMs(new Date(1900, 0), -2208988800000);
+
+assertRelativeDateMs(new Date(1969, 11), -2678400000);
+
+assertRelativeDateMs(new Date(1969, 12), 0);
+
+assertRelativeDateMs(new Date(1970, 0), 0);
+
+assertRelativeDateMs(new Date(1999, 11), 944006400000);
+
+assertRelativeDateMs(new Date(1999, 12), 946684800000);
+
+assertRelativeDateMs(new Date(2000, 0), 946684800000);
+
+assertRelativeDateMs(new Date(2099, 11), 4099766400000);
+
+assertRelativeDateMs(new Date(2099, 12), 4102444800000);
+
+assertRelativeDateMs(new Date(2100, 0), 4102444800000);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/S15.9.3.1_A5_T2.js b/js/src/tests/test262/built-ins/Date/S15.9.3.1_A5_T2.js
new file mode 100644
index 0000000000..0b0cb5d23e
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/S15.9.3.1_A5_T2.js
@@ -0,0 +1,43 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+info: |
+    The [[Value]] property of the newly constructed object
+    is set by following steps:
+    8. If Result(1) is not NaN and 0 <= ToInteger(Result(1)) <= 99, Result(8) is
+    1900+ToInteger(Result(1)); otherwise, Result(8) is Result(1)
+    9. Compute MakeDay(Result(8), Result(2), Result(3))
+    10. Compute MakeTime(Result(4), Result(5), Result(6), Result(7))
+    11. Compute MakeDate(Result(9), Result(10))
+    12. Set the [[Value]] property of the newly constructed object to
+    TimeClip(UTC(Result(11)))
+esid: sec-date-year-month-date-hours-minutes-seconds-ms
+description: 3 arguments, (year, month, date)
+includes: [assertRelativeDateMs.js]
+---*/
+
+assertRelativeDateMs(new Date(1899, 11, 31), -2209075200000);
+
+assertRelativeDateMs(new Date(1899, 12, 1), -2208988800000);
+
+assertRelativeDateMs(new Date(1900, 0, 1), -2208988800000);
+
+assertRelativeDateMs(new Date(1969, 11, 31), -86400000);
+
+assertRelativeDateMs(new Date(1969, 12, 1), 0);
+
+assertRelativeDateMs(new Date(1970, 0, 1), 0);
+
+assertRelativeDateMs(new Date(1999, 11, 31), 946598400000);
+
+assertRelativeDateMs(new Date(1999, 12, 1), 946684800000);
+
+assertRelativeDateMs(new Date(2000, 0, 1), 946684800000);
+
+assertRelativeDateMs(new Date(2099, 11, 31), 4102358400000);
+
+assertRelativeDateMs(new Date(2099, 12, 1), 4102444800000);
+
+assertRelativeDateMs(new Date(2100, 0, 1), 4102444800000);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/S15.9.3.1_A5_T3.js b/js/src/tests/test262/built-ins/Date/S15.9.3.1_A5_T3.js
new file mode 100644
index 0000000000..91aeac8582
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/S15.9.3.1_A5_T3.js
@@ -0,0 +1,43 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+info: |
+    The [[Value]] property of the newly constructed object
+    is set by following steps:
+    8. If Result(1) is not NaN and 0 <= ToInteger(Result(1)) <= 99, Result(8) is
+    1900+ToInteger(Result(1)); otherwise, Result(8) is Result(1)
+    9. Compute MakeDay(Result(8), Result(2), Result(3))
+    10. Compute MakeTime(Result(4), Result(5), Result(6), Result(7))
+    11. Compute MakeDate(Result(9), Result(10))
+    12. Set the [[Value]] property of the newly constructed object to
+    TimeClip(UTC(Result(11)))
+esid: sec-date-year-month-date-hours-minutes-seconds-ms
+description: 4 arguments, (year, month, date, hours)
+includes: [assertRelativeDateMs.js]
+---*/
+
+assertRelativeDateMs(new Date(1899, 11, 31, 23), -2208992400000);
+
+assertRelativeDateMs(new Date(1899, 12, 1, 0), -2208988800000);
+
+assertRelativeDateMs(new Date(1900, 0, 1, 0), -2208988800000);
+
+assertRelativeDateMs(new Date(1969, 11, 31, 23), -3600000);
+
+assertRelativeDateMs(new Date(1969, 12, 1, 0), 0);
+
+assertRelativeDateMs(new Date(1970, 0, 1, 0), 0);
+
+assertRelativeDateMs(new Date(1999, 11, 31, 23), 946681200000);
+
+assertRelativeDateMs(new Date(1999, 12, 1, 0), 946684800000);
+
+assertRelativeDateMs(new Date(2000, 0, 1, 0), 946684800000);
+
+assertRelativeDateMs(new Date(2099, 11, 31, 23), 4102441200000);
+
+assertRelativeDateMs(new Date(2099, 12, 1, 0), 4102444800000);
+
+assertRelativeDateMs(new Date(2100, 0, 1, 0), 4102444800000);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/S15.9.3.1_A5_T4.js b/js/src/tests/test262/built-ins/Date/S15.9.3.1_A5_T4.js
new file mode 100644
index 0000000000..dd68ecc5ca
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/S15.9.3.1_A5_T4.js
@@ -0,0 +1,43 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+info: |
+    The [[Value]] property of the newly constructed object
+    is set by following steps:
+    8. If Result(1) is not NaN and 0 <= ToInteger(Result(1)) <= 99, Result(8) is
+    1900+ToInteger(Result(1)); otherwise, Result(8) is Result(1)
+    9. Compute MakeDay(Result(8), Result(2), Result(3))
+    10. Compute MakeTime(Result(4), Result(5), Result(6), Result(7))
+    11. Compute MakeDate(Result(9), Result(10))
+    12. Set the [[Value]] property of the newly constructed object to
+    TimeClip(UTC(Result(11)))
+esid: sec-date-year-month-date-hours-minutes-seconds-ms
+description: 5 arguments, (year, month, date, hours, minutes)
+includes: [assertRelativeDateMs.js]
+---*/
+
+assertRelativeDateMs(new Date(1899, 11, 31, 23, 59), -2208988860000);
+
+assertRelativeDateMs(new Date(1899, 12, 1, 0, 0), -2208988800000);
+
+assertRelativeDateMs(new Date(1900, 0, 1, 0, 0), -2208988800000);
+
+assertRelativeDateMs(new Date(1969, 11, 31, 23, 59), -60000);
+
+assertRelativeDateMs(new Date(1969, 12, 1, 0, 0), 0);
+
+assertRelativeDateMs(new Date(1970, 0, 1, 0, 0), 0);
+
+assertRelativeDateMs(new Date(1999, 11, 31, 23, 59), 946684740000);
+
+assertRelativeDateMs(new Date(1999, 12, 1, 0, 0), 946684800000);
+
+assertRelativeDateMs(new Date(2000, 0, 1, 0, 0), 946684800000);
+
+assertRelativeDateMs(new Date(2099, 11, 31, 23, 59), 4102444740000);
+
+assertRelativeDateMs(new Date(2099, 12, 1, 0, 0), 4102444800000);
+
+assertRelativeDateMs(new Date(2100, 0, 1, 0, 0), 4102444800000);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/S15.9.3.1_A5_T5.js b/js/src/tests/test262/built-ins/Date/S15.9.3.1_A5_T5.js
new file mode 100644
index 0000000000..8565f3c9bf
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/S15.9.3.1_A5_T5.js
@@ -0,0 +1,43 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+info: |
+    The [[Value]] property of the newly constructed object
+    is set by following steps:
+    8. If Result(1) is not NaN and 0 <= ToInteger(Result(1)) <= 99, Result(8) is
+    1900+ToInteger(Result(1)); otherwise, Result(8) is Result(1)
+    9. Compute MakeDay(Result(8), Result(2), Result(3))
+    10. Compute MakeTime(Result(4), Result(5), Result(6), Result(7))
+    11. Compute MakeDate(Result(9), Result(10))
+    12. Set the [[Value]] property of the newly constructed object to
+    TimeClip(UTC(Result(11)))
+esid: sec-date-year-month-date-hours-minutes-seconds-ms
+description: 6 arguments, (year, month, date, hours, minutes, seconds)
+includes: [assertRelativeDateMs.js]
+---*/
+
+assertRelativeDateMs(new Date(1899, 11, 31, 23, 59, 59), -2208988801000);
+
+assertRelativeDateMs(new Date(1899, 12, 1, 0, 0, 0), -2208988800000);
+
+assertRelativeDateMs(new Date(1900, 0, 1, 0, 0, 0), -2208988800000);
+
+assertRelativeDateMs(new Date(1969, 11, 31, 23, 59, 59), -1000);
+
+assertRelativeDateMs(new Date(1969, 12, 1, 0, 0, 0), 0);
+
+assertRelativeDateMs(new Date(1970, 0, 1, 0, 0, 0), 0);
+
+assertRelativeDateMs(new Date(1999, 11, 31, 23, 59, 59), 946684799000);
+
+assertRelativeDateMs(new Date(1999, 12, 1, 0, 0, 0), 946684800000);
+
+assertRelativeDateMs(new Date(2000, 0, 1, 0, 0, 0), 946684800000);
+
+assertRelativeDateMs(new Date(2099, 11, 31, 23, 59, 59), 4102444799000);
+
+assertRelativeDateMs(new Date(2099, 12, 1, 0, 0, 0), 4102444800000);
+
+assertRelativeDateMs(new Date(2100, 0, 1, 0, 0, 0), 4102444800000);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/S15.9.3.1_A5_T6.js b/js/src/tests/test262/built-ins/Date/S15.9.3.1_A5_T6.js
new file mode 100644
index 0000000000..3c60cfe520
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/S15.9.3.1_A5_T6.js
@@ -0,0 +1,43 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+info: |
+    The [[Value]] property of the newly constructed object
+    is set by following steps:
+    8. If Result(1) is not NaN and 0 <= ToInteger(Result(1)) <= 99, Result(8) is
+    1900+ToInteger(Result(1)); otherwise, Result(8) is Result(1)
+    9. Compute MakeDay(Result(8), Result(2), Result(3))
+    10. Compute MakeTime(Result(4), Result(5), Result(6), Result(7))
+    11. Compute MakeDate(Result(9), Result(10))
+    12. Set the [[Value]] property of the newly constructed object to
+    TimeClip(UTC(Result(11)))
+esid: sec-date-year-month-date-hours-minutes-seconds-ms
+description: 7 arguments, (year, month, date, hours, minutes, seconds, ms)
+includes: [assertRelativeDateMs.js]
+---*/
+
+assertRelativeDateMs(new Date(1899, 11, 31, 23, 59, 59, 999), -2208988800001);
+
+assertRelativeDateMs(new Date(1899, 12, 1, 0, 0, 0, 0), -2208988800000);
+
+assertRelativeDateMs(new Date(1900, 0, 1, 0, 0, 0, 0), -2208988800000);
+
+assertRelativeDateMs(new Date(1969, 11, 31, 23, 59, 59, 999), -1);
+
+assertRelativeDateMs(new Date(1969, 12, 1, 0, 0, 0, 0), 0);
+
+assertRelativeDateMs(new Date(1970, 0, 1, 0, 0, 0, 0), 0);
+
+assertRelativeDateMs(new Date(1999, 11, 31, 23, 59, 59, 999), 946684799999);
+
+assertRelativeDateMs(new Date(1999, 12, 1, 0, 0, 0, 0), 946684800000);
+
+assertRelativeDateMs(new Date(2000, 0, 1, 0, 0, 0, 0), 946684800000);
+
+assertRelativeDateMs(new Date(2099, 11, 31, 23, 59, 59, 999), 4102444799999);
+
+assertRelativeDateMs(new Date(2099, 12, 1, 0, 0, 0, 0), 4102444800000);
+
+assertRelativeDateMs(new Date(2100, 0, 1, 0, 0, 0, 0), 4102444800000);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/S15.9.3.1_A6_T1.js b/js/src/tests/test262/built-ins/Date/S15.9.3.1_A6_T1.js
new file mode 100644
index 0000000000..9b0baad700
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/S15.9.3.1_A6_T1.js
@@ -0,0 +1,53 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The [[Value]] property of the newly constructed object
+    with supplied "undefined" argument should be NaN
+esid: sec-date-year-month-date-hours-minutes-seconds-ms
+description: 2 arguments, (year, month)
+---*/
+
+function DateValue(year, month, date, hours, minutes, seconds, ms) {
+  return new Date(year, month, date, hours, minutes, seconds, ms).valueOf();
+}
+
+var x;
+x = DateValue(1899, 11);
+assert.sameValue(x, NaN, 'The value of x is expected to equal NaN');
+
+x = DateValue(1899, 12);
+assert.sameValue(x, NaN, 'The value of x is expected to equal NaN');
+
+x = DateValue(1900, 0);
+assert.sameValue(x, NaN, 'The value of x is expected to equal NaN');
+
+x = DateValue(1969, 11);
+assert.sameValue(x, NaN, 'The value of x is expected to equal NaN');
+
+x = DateValue(1969, 12);
+assert.sameValue(x, NaN, 'The value of x is expected to equal NaN');
+
+x = DateValue(1970, 0);
+assert.sameValue(x, NaN, 'The value of x is expected to equal NaN');
+
+x = DateValue(1999, 11);
+assert.sameValue(x, NaN, 'The value of x is expected to equal NaN');
+
+x = DateValue(1999, 12);
+assert.sameValue(x, NaN, 'The value of x is expected to equal NaN');
+
+x = DateValue(2000, 0);
+assert.sameValue(x, NaN, 'The value of x is expected to equal NaN');
+
+x = DateValue(2099, 11);
+assert.sameValue(x, NaN, 'The value of x is expected to equal NaN');
+
+x = DateValue(2099, 12);
+assert.sameValue(x, NaN, 'The value of x is expected to equal NaN');
+
+x = DateValue(2100, 0);
+assert.sameValue(x, NaN, 'The value of x is expected to equal NaN');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/S15.9.3.1_A6_T2.js b/js/src/tests/test262/built-ins/Date/S15.9.3.1_A6_T2.js
new file mode 100644
index 0000000000..c5c181361a
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/S15.9.3.1_A6_T2.js
@@ -0,0 +1,53 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The [[Value]] property of the newly constructed object
+    with supplied "undefined" argument should be NaN
+esid: sec-date-year-month-date-hours-minutes-seconds-ms
+description: 3 arguments, (year, month, date)
+---*/
+
+function DateValue(year, month, date, hours, minutes, seconds, ms) {
+  return new Date(year, month, date, hours, minutes, seconds, ms).valueOf();
+}
+
+var x;
+x = DateValue(1899, 11, 31);
+assert.sameValue(x, NaN, 'The value of x is expected to equal NaN');
+
+x = DateValue(1899, 12, 1);
+assert.sameValue(x, NaN, 'The value of x is expected to equal NaN');
+
+x = DateValue(1900, 0, 1);
+assert.sameValue(x, NaN, 'The value of x is expected to equal NaN');
+
+x = DateValue(1969, 11, 31);
+assert.sameValue(x, NaN, 'The value of x is expected to equal NaN');
+
+x = DateValue(1969, 12, 1);
+assert.sameValue(x, NaN, 'The value of x is expected to equal NaN');
+
+x = DateValue(1970, 0, 1);
+assert.sameValue(x, NaN, 'The value of x is expected to equal NaN');
+
+x = DateValue(1999, 11, 31);
+assert.sameValue(x, NaN, 'The value of x is expected to equal NaN');
+
+x = DateValue(1999, 12, 1);
+assert.sameValue(x, NaN, 'The value of x is expected to equal NaN');
+
+x = DateValue(2000, 0, 1);
+assert.sameValue(x, NaN, 'The value of x is expected to equal NaN');
+
+x = DateValue(2099, 11, 31);
+assert.sameValue(x, NaN, 'The value of x is expected to equal NaN');
+
+x = DateValue(2099, 12, 1);
+assert.sameValue(x, NaN, 'The value of x is expected to equal NaN');
+
+x = DateValue(2100, 0, 1);
+assert.sameValue(x, NaN, 'The value of x is expected to equal NaN');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/S15.9.3.1_A6_T3.js b/js/src/tests/test262/built-ins/Date/S15.9.3.1_A6_T3.js
new file mode 100644
index 0000000000..b011be91ef
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/S15.9.3.1_A6_T3.js
@@ -0,0 +1,53 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The [[Value]] property of the newly constructed object
+    with supplied "undefined" argument should be NaN
+esid: sec-date-year-month-date-hours-minutes-seconds-ms
+description: 4 arguments, (year, month, date, hours)
+---*/
+
+function DateValue(year, month, date, hours, minutes, seconds, ms) {
+  return new Date(year, month, date, hours, minutes, seconds, ms).valueOf();
+}
+
+var x;
+x = DateValue(1899, 11, 31, 23);
+assert.sameValue(x, NaN, 'The value of x is expected to equal NaN');
+
+x = DateValue(1899, 12, 1, 0);
+assert.sameValue(x, NaN, 'The value of x is expected to equal NaN');
+
+x = DateValue(1900, 0, 1, 0);
+assert.sameValue(x, NaN, 'The value of x is expected to equal NaN');
+
+x = DateValue(1969, 11, 31, 23);
+assert.sameValue(x, NaN, 'The value of x is expected to equal NaN');
+
+x = DateValue(1969, 12, 1, 0);
+assert.sameValue(x, NaN, 'The value of x is expected to equal NaN');
+
+x = DateValue(1970, 0, 1, 0);
+assert.sameValue(x, NaN, 'The value of x is expected to equal NaN');
+
+x = DateValue(1999, 11, 31, 23);
+assert.sameValue(x, NaN, 'The value of x is expected to equal NaN');
+
+x = DateValue(1999, 12, 1, 0);
+assert.sameValue(x, NaN, 'The value of x is expected to equal NaN');
+
+x = DateValue(2000, 0, 1, 0);
+assert.sameValue(x, NaN, 'The value of x is expected to equal NaN');
+
+x = DateValue(2099, 11, 31, 23);
+assert.sameValue(x, NaN, 'The value of x is expected to equal NaN');
+
+x = DateValue(2099, 12, 1, 0);
+assert.sameValue(x, NaN, 'The value of x is expected to equal NaN');
+
+x = DateValue(2100, 0, 1, 0);
+assert.sameValue(x, NaN, 'The value of x is expected to equal NaN');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/S15.9.3.1_A6_T4.js b/js/src/tests/test262/built-ins/Date/S15.9.3.1_A6_T4.js
new file mode 100644
index 0000000000..d482aab2b1
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/S15.9.3.1_A6_T4.js
@@ -0,0 +1,53 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The [[Value]] property of the newly constructed object
+    with supplied "undefined" argument should be NaN
+esid: sec-date-year-month-date-hours-minutes-seconds-ms
+description: 5 arguments, (year, month, date, hours, minutes)
+---*/
+
+function DateValue(year, month, date, hours, minutes, seconds, ms) {
+  return new Date(year, month, date, hours, minutes, seconds, ms).valueOf();
+}
+
+var x;
+x = DateValue(1899, 11, 31, 23, 59);
+assert.sameValue(x, NaN, 'The value of x is expected to equal NaN');
+
+x = DateValue(1899, 12, 1, 0, 0);
+assert.sameValue(x, NaN, 'The value of x is expected to equal NaN');
+
+x = DateValue(1900, 0, 1, 0, 0);
+assert.sameValue(x, NaN, 'The value of x is expected to equal NaN');
+
+x = DateValue(1969, 11, 31, 23, 59);
+assert.sameValue(x, NaN, 'The value of x is expected to equal NaN');
+
+x = DateValue(1969, 12, 1, 0, 0);
+assert.sameValue(x, NaN, 'The value of x is expected to equal NaN');
+
+x = DateValue(1970, 0, 1, 0, 0);
+assert.sameValue(x, NaN, 'The value of x is expected to equal NaN');
+
+x = DateValue(1999, 11, 31, 23, 59);
+assert.sameValue(x, NaN, 'The value of x is expected to equal NaN');
+
+x = DateValue(1999, 12, 1, 0, 0);
+assert.sameValue(x, NaN, 'The value of x is expected to equal NaN');
+
+x = DateValue(2000, 0, 1, 0, 0);
+assert.sameValue(x, NaN, 'The value of x is expected to equal NaN');
+
+x = DateValue(2099, 11, 31, 23, 59);
+assert.sameValue(x, NaN, 'The value of x is expected to equal NaN');
+
+x = DateValue(2099, 12, 1, 0, 0);
+assert.sameValue(x, NaN, 'The value of x is expected to equal NaN');
+
+x = DateValue(2100, 0, 1, 0, 0);
+assert.sameValue(x, NaN, 'The value of x is expected to equal NaN');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/S15.9.3.1_A6_T5.js b/js/src/tests/test262/built-ins/Date/S15.9.3.1_A6_T5.js
new file mode 100644
index 0000000000..41480d29d7
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/S15.9.3.1_A6_T5.js
@@ -0,0 +1,53 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The [[Value]] property of the newly constructed object
+    with supplied "undefined" argument should be NaN
+esid: sec-date-year-month-date-hours-minutes-seconds-ms
+description: 6 arguments, (year, month, date, hours, minutes, seconds)
+---*/
+
+function DateValue(year, month, date, hours, minutes, seconds, ms) {
+  return new Date(year, month, date, hours, minutes, seconds, ms).valueOf();
+}
+
+var x;
+x = DateValue(1899, 11, 31, 23, 59, 59);
+assert.sameValue(x, NaN, 'The value of x is expected to equal NaN');
+
+x = DateValue(1899, 12, 1, 0, 0, 0);
+assert.sameValue(x, NaN, 'The value of x is expected to equal NaN');
+
+x = DateValue(1900, 0, 1, 0, 0, 0);
+assert.sameValue(x, NaN, 'The value of x is expected to equal NaN');
+
+x = DateValue(1969, 11, 31, 23, 59, 59);
+assert.sameValue(x, NaN, 'The value of x is expected to equal NaN');
+
+x = DateValue(1969, 12, 1, 0, 0, 0);
+assert.sameValue(x, NaN, 'The value of x is expected to equal NaN');
+
+x = DateValue(1970, 0, 1, 0, 0, 0);
+assert.sameValue(x, NaN, 'The value of x is expected to equal NaN');
+
+x = DateValue(1999, 11, 31, 23, 59, 59);
+assert.sameValue(x, NaN, 'The value of x is expected to equal NaN');
+
+x = DateValue(1999, 12, 1, 0, 0, 0);
+assert.sameValue(x, NaN, 'The value of x is expected to equal NaN');
+
+x = DateValue(2000, 0, 1, 0, 0, 0);
+assert.sameValue(x, NaN, 'The value of x is expected to equal NaN');
+
+x = DateValue(2099, 11, 31, 23, 59, 59);
+assert.sameValue(x, NaN, 'The value of x is expected to equal NaN');
+
+x = DateValue(2099, 12, 1, 0, 0, 0);
+assert.sameValue(x, NaN, 'The value of x is expected to equal NaN');
+
+x = DateValue(2100, 0, 1, 0, 0, 0);
+assert.sameValue(x, NaN, 'The value of x is expected to equal NaN');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/S15.9.3.2_A1_T1.js b/js/src/tests/test262/built-ins/Date/S15.9.3.2_A1_T1.js
new file mode 100644
index 0000000000..ed603baee7
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/S15.9.3.2_A1_T1.js
@@ -0,0 +1,140 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    When Date is called as part of a new expression it is
+    a constructor: it initialises the newly created object
+esid: sec-date-value
+description: Checking types of newly created objects and it values
+includes: [dateConstants.js]
+---*/
+assert.sameValue(
+  typeof new Date(date_1899_end),
+  "object",
+  'The value of `typeof new Date(date_1899_end)` is expected to be "object"'
+);
+
+assert.notSameValue(new Date(date_1899_end), undefined, 'new Date(date_1899_end) is expected to not equal ``undefined``');
+
+var x13 = new Date(date_1899_end);
+assert.sameValue(typeof x13, "object", 'The value of `typeof x13` is expected to be "object"');
+
+var x14 = new Date(date_1899_end);
+assert.notSameValue(x14, undefined, 'The value of x14 is expected to not equal ``undefined``');
+
+assert.sameValue(
+  typeof new Date(date_1900_start),
+  "object",
+  'The value of `typeof new Date(date_1900_start)` is expected to be "object"'
+);
+
+assert.notSameValue(
+  new Date(date_1900_start),
+  undefined,
+  'new Date(date_1900_start) is expected to not equal ``undefined``'
+);
+
+var x23 = new Date(date_1900_start);
+assert.sameValue(typeof x23, "object", 'The value of `typeof x23` is expected to be "object"');
+
+var x24 = new Date(date_1900_start);
+assert.notSameValue(x24, undefined, 'The value of x24 is expected to not equal ``undefined``');
+
+assert.sameValue(
+  typeof new Date(date_1969_end),
+  "object",
+  'The value of `typeof new Date(date_1969_end)` is expected to be "object"'
+);
+
+assert.notSameValue(new Date(date_1969_end), undefined, 'new Date(date_1969_end) is expected to not equal ``undefined``');
+
+var x33 = new Date(date_1969_end);
+assert.sameValue(typeof x33, "object", 'The value of `typeof x33` is expected to be "object"');
+
+var x34 = new Date(date_1969_end);
+assert.notSameValue(x34, undefined, 'The value of x34 is expected to not equal ``undefined``');
+
+assert.sameValue(
+  typeof new Date(date_1970_start),
+  "object",
+  'The value of `typeof new Date(date_1970_start)` is expected to be "object"'
+);
+
+assert.notSameValue(
+  new Date(date_1970_start),
+  undefined,
+  'new Date(date_1970_start) is expected to not equal ``undefined``'
+);
+
+var x43 = new Date(date_1970_start);
+assert.sameValue(typeof x43, "object", 'The value of `typeof x43` is expected to be "object"');
+
+var x44 = new Date(date_1970_start);
+assert.notSameValue(x44, undefined, 'The value of x44 is expected to not equal ``undefined``');
+
+assert.sameValue(
+  typeof new Date(date_1999_end),
+  "object",
+  'The value of `typeof new Date(date_1999_end)` is expected to be "object"'
+);
+
+assert.notSameValue(new Date(date_1999_end), undefined, 'new Date(date_1999_end) is expected to not equal ``undefined``');
+
+var x53 = new Date(date_1999_end);
+assert.sameValue(typeof x53, "object", 'The value of `typeof x53` is expected to be "object"');
+
+var x54 = new Date(date_1999_end);
+assert.notSameValue(x54, undefined, 'The value of x54 is expected to not equal ``undefined``');
+
+assert.sameValue(
+  typeof new Date(date_2000_start),
+  "object",
+  'The value of `typeof new Date(date_2000_start)` is expected to be "object"'
+);
+
+assert.notSameValue(
+  new Date(date_2000_start),
+  undefined,
+  'new Date(date_2000_start) is expected to not equal ``undefined``'
+);
+
+var x63 = new Date(date_2000_start);
+assert.sameValue(typeof x63, "object", 'The value of `typeof x63` is expected to be "object"');
+
+var x64 = new Date(date_2000_start);
+assert.notSameValue(x64, undefined, 'The value of x64 is expected to not equal ``undefined``');
+
+assert.sameValue(
+  typeof new Date(date_2099_end),
+  "object",
+  'The value of `typeof new Date(date_2099_end)` is expected to be "object"'
+);
+
+assert.notSameValue(new Date(date_2099_end), undefined, 'new Date(date_2099_end) is expected to not equal ``undefined``');
+
+var x73 = new Date(date_2099_end);
+assert.sameValue(typeof x73, "object", 'The value of `typeof x73` is expected to be "object"');
+
+var x74 = new Date(date_2099_end);
+assert.notSameValue(x74, undefined, 'The value of x74 is expected to not equal ``undefined``');
+
+assert.sameValue(
+  typeof new Date(date_2100_start),
+  "object",
+  'The value of `typeof new Date(date_2100_start)` is expected to be "object"'
+);
+
+assert.notSameValue(
+  new Date(date_2100_start),
+  undefined,
+  'new Date(date_2100_start) is expected to not equal ``undefined``'
+);
+
+var x83 = new Date(date_2100_start);
+assert.sameValue(typeof x83, "object", 'The value of `typeof x83` is expected to be "object"');
+
+var x84 = new Date(date_2100_start);
+assert.notSameValue(x84, undefined, 'The value of x84 is expected to not equal ``undefined``');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/S15.9.3.2_A2_T1.js b/js/src/tests/test262/built-ins/Date/S15.9.3.2_A2_T1.js
new file mode 100644
index 0000000000..6ec8fb0ff0
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/S15.9.3.2_A2_T1.js
@@ -0,0 +1,166 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The [[Prototype]] property of the newly constructed object
+    is set to the original Date prototype object, the one that is the
+    initial value of Date.prototype
+esid: sec-date-value
+description: Checking Date.prototype property of newly constructed objects
+includes: [dateConstants.js]
+---*/
+
+var x11 = new Date(date_1899_end);
+
+assert.sameValue(
+  typeof x11.constructor.prototype,
+  "object",
+  'The value of `typeof x11.constructor.prototype` is expected to be "object"'
+);
+
+var x12 = new Date(date_1899_end);
+assert(Date.prototype.isPrototypeOf(x12), 'Date.prototype.isPrototypeOf(x12) must return true');
+
+var x13 = new Date(date_1899_end);
+
+assert.sameValue(
+  Date.prototype,
+  x13.constructor.prototype,
+  'The value of Date.prototype is expected to equal the value of x13.constructor.prototype'
+);
+
+var x21 = new Date(date_1900_start);
+
+assert.sameValue(
+  typeof x21.constructor.prototype,
+  "object",
+  'The value of `typeof x21.constructor.prototype` is expected to be "object"'
+);
+
+var x22 = new Date(date_1900_start);
+assert(Date.prototype.isPrototypeOf(x22), 'Date.prototype.isPrototypeOf(x22) must return true');
+
+var x23 = new Date(date_1900_start);
+
+assert.sameValue(
+  Date.prototype,
+  x23.constructor.prototype,
+  'The value of Date.prototype is expected to equal the value of x23.constructor.prototype'
+);
+
+var x31 = new Date(date_1969_end);
+
+assert.sameValue(
+  typeof x31.constructor.prototype,
+  "object",
+  'The value of `typeof x31.constructor.prototype` is expected to be "object"'
+);
+
+var x32 = new Date(date_1969_end);
+assert(Date.prototype.isPrototypeOf(x32), 'Date.prototype.isPrototypeOf(x32) must return true');
+
+var x33 = new Date(date_1969_end);
+
+assert.sameValue(
+  Date.prototype,
+  x33.constructor.prototype,
+  'The value of Date.prototype is expected to equal the value of x33.constructor.prototype'
+);
+
+var x41 = new Date(date_1970_start);
+
+assert.sameValue(
+  typeof x41.constructor.prototype,
+  "object",
+  'The value of `typeof x41.constructor.prototype` is expected to be "object"'
+);
+
+var x42 = new Date(date_1970_start);
+assert(Date.prototype.isPrototypeOf(x42), 'Date.prototype.isPrototypeOf(x42) must return true');
+
+var x43 = new Date(date_1970_start);
+
+assert.sameValue(
+  Date.prototype,
+  x43.constructor.prototype,
+  'The value of Date.prototype is expected to equal the value of x43.constructor.prototype'
+);
+
+var x51 = new Date(date_1999_end);
+
+assert.sameValue(
+  typeof x51.constructor.prototype,
+  "object",
+  'The value of `typeof x51.constructor.prototype` is expected to be "object"'
+);
+
+var x52 = new Date(date_1999_end);
+assert(Date.prototype.isPrototypeOf(x52), 'Date.prototype.isPrototypeOf(x52) must return true');
+
+var x53 = new Date(date_1999_end);
+
+assert.sameValue(
+  Date.prototype,
+  x53.constructor.prototype,
+  'The value of Date.prototype is expected to equal the value of x53.constructor.prototype'
+);
+
+var x61 = new Date(date_2000_start);
+
+assert.sameValue(
+  typeof x61.constructor.prototype,
+  "object",
+  'The value of `typeof x61.constructor.prototype` is expected to be "object"'
+);
+
+var x62 = new Date(date_2000_start);
+assert(Date.prototype.isPrototypeOf(x62), 'Date.prototype.isPrototypeOf(x62) must return true');
+
+var x63 = new Date(date_2000_start);
+
+assert.sameValue(
+  Date.prototype,
+  x63.constructor.prototype,
+  'The value of Date.prototype is expected to equal the value of x63.constructor.prototype'
+);
+
+var x71 = new Date(date_2099_end);
+
+assert.sameValue(
+  typeof x71.constructor.prototype,
+  "object",
+  'The value of `typeof x71.constructor.prototype` is expected to be "object"'
+);
+
+var x72 = new Date(date_2099_end);
+assert(Date.prototype.isPrototypeOf(x72), 'Date.prototype.isPrototypeOf(x72) must return true');
+
+var x73 = new Date(date_2099_end);
+
+assert.sameValue(
+  Date.prototype,
+  x73.constructor.prototype,
+  'The value of Date.prototype is expected to equal the value of x73.constructor.prototype'
+);
+
+var x81 = new Date(date_2100_start);
+
+assert.sameValue(
+  typeof x81.constructor.prototype,
+  "object",
+  'The value of `typeof x81.constructor.prototype` is expected to be "object"'
+);
+
+var x82 = new Date(date_2100_start);
+assert(Date.prototype.isPrototypeOf(x82), 'Date.prototype.isPrototypeOf(x82) must return true');
+
+var x83 = new Date(date_2100_start);
+
+assert.sameValue(
+  Date.prototype,
+  x83.constructor.prototype,
+  'The value of Date.prototype is expected to equal the value of x83.constructor.prototype'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/S15.9.3.2_A3_T1.1.js b/js/src/tests/test262/built-ins/Date/S15.9.3.2_A3_T1.1.js
new file mode 100644
index 0000000000..3e52511561
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/S15.9.3.2_A3_T1.1.js
@@ -0,0 +1,77 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The [[Class]] property of the newly constructed object
+    is set to "Date"
+esid: sec-date-value
+description: Test based on delete prototype.toString
+includes: [dateConstants.js]
+---*/
+
+var x1 = new Date(date_1899_end);
+
+assert.sameValue(
+  Object.prototype.toString.call(x1),
+  "[object Date]",
+  'Object.prototype.toString.call(new Date(date_1899_end)) must return "[object Date]"'
+);
+
+var x2 = new Date(date_1900_start);
+
+assert.sameValue(
+  Object.prototype.toString.call(x2),
+  "[object Date]",
+  'Object.prototype.toString.call(new Date(date_1900_start)) must return "[object Date]"'
+);
+
+var x3 = new Date(date_1969_end);
+
+assert.sameValue(
+  Object.prototype.toString.call(x3),
+  "[object Date]",
+  'Object.prototype.toString.call(new Date(date_1969_end)) must return "[object Date]"'
+);
+
+var x4 = new Date(date_1970_start);
+
+assert.sameValue(
+  Object.prototype.toString.call(x4),
+  "[object Date]",
+  'Object.prototype.toString.call(new Date(date_1970_start)) must return "[object Date]"'
+);
+
+var x5 = new Date(date_1999_end);
+
+assert.sameValue(
+  Object.prototype.toString.call(x5),
+  "[object Date]",
+  'Object.prototype.toString.call(new Date(date_1999_end)) must return "[object Date]"'
+);
+
+var x6 = new Date(date_2000_start);
+
+assert.sameValue(
+  Object.prototype.toString.call(x6),
+  "[object Date]",
+  'Object.prototype.toString.call(new Date(date_2000_start)) must return "[object Date]"'
+);
+
+var x7 = new Date(date_2099_end);
+
+assert.sameValue(
+  Object.prototype.toString.call(x7),
+  "[object Date]",
+  'Object.prototype.toString.call(new Date(date_2099_end)) must return "[object Date]"'
+);
+
+var x8 = new Date(date_2100_start);
+
+assert.sameValue(
+  Object.prototype.toString.call(x8),
+  "[object Date]",
+  'Object.prototype.toString.call(new Date(date_2100_start)) must return "[object Date]"'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/S15.9.3.2_A3_T1.2.js b/js/src/tests/test262/built-ins/Date/S15.9.3.2_A3_T1.2.js
new file mode 100644
index 0000000000..78f451277a
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/S15.9.3.2_A3_T1.2.js
@@ -0,0 +1,39 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The [[Class]] property of the newly constructed object
+    is set to "Date"
+esid: sec-date-value
+description: Test based on overwriting prototype.toString
+includes: [dateConstants.js]
+---*/
+
+Date.prototype.toString = Object.prototype.toString;
+
+var x1 = new Date(date_1899_end);
+assert.sameValue(x1.toString(), "[object Date]", 'x1.toString() must return "[object Date]"');
+
+var x2 = new Date(date_1900_start);
+assert.sameValue(x2.toString(), "[object Date]", 'x2.toString() must return "[object Date]"');
+
+var x3 = new Date(date_1969_end);
+assert.sameValue(x3.toString(), "[object Date]", 'x3.toString() must return "[object Date]"');
+
+var x4 = new Date(date_1970_start);
+assert.sameValue(x4.toString(), "[object Date]", 'x4.toString() must return "[object Date]"');
+
+var x5 = new Date(date_1999_end);
+assert.sameValue(x5.toString(), "[object Date]", 'x5.toString() must return "[object Date]"');
+
+var x6 = new Date(date_2000_start);
+assert.sameValue(x6.toString(), "[object Date]", 'x6.toString() must return "[object Date]"');
+
+var x7 = new Date(date_2099_end);
+assert.sameValue(x7.toString(), "[object Date]", 'x7.toString() must return "[object Date]"');
+
+var x8 = new Date(date_2100_start);
+assert.sameValue(x8.toString(), "[object Date]", 'x8.toString() must return "[object Date]"');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/S15.9.4_A1.js b/js/src/tests/test262/built-ins/Date/S15.9.4_A1.js
new file mode 100644
index 0000000000..cc810add62
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/S15.9.4_A1.js
@@ -0,0 +1,11 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date constructor has the property "prototype"
+esid: sec-date-constructor
+description: Checking existence of the property "prototype"
+---*/
+assert(Date.hasOwnProperty("prototype"), 'Date.hasOwnProperty("prototype") must return true');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/S15.9.4_A2.js b/js/src/tests/test262/built-ins/Date/S15.9.4_A2.js
new file mode 100644
index 0000000000..efa6e93863
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/S15.9.4_A2.js
@@ -0,0 +1,11 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date constructor has the property "parse"
+esid: sec-date-constructor
+description: Checking existence of the property "parse"
+---*/
+assert(Date.hasOwnProperty("parse"), 'Date.hasOwnProperty("parse") must return true');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/S15.9.4_A3.js b/js/src/tests/test262/built-ins/Date/S15.9.4_A3.js
new file mode 100644
index 0000000000..381b4d16dc
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/S15.9.4_A3.js
@@ -0,0 +1,11 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date constructor has the property "UTC"
+esid: sec-date-constructor
+description: Checking existence of the property "UTC"
+---*/
+assert(Date.hasOwnProperty("UTC"), 'Date.hasOwnProperty("UTC") must return true');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/S15.9.4_A4.js b/js/src/tests/test262/built-ins/Date/S15.9.4_A4.js
new file mode 100644
index 0000000000..2d7445628c
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/S15.9.4_A4.js
@@ -0,0 +1,13 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The value of the internal [[Prototype]] property of the Date
+    constructor is the Function prototype object
+esid: sec-date-constructor
+description: Checking Function.prototype.isPrototypeOf(Date)
+---*/
+assert(Function.prototype.isPrototypeOf(Date), 'Function.prototype.isPrototypeOf(Date) must return true');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/S15.9.4_A5.js b/js/src/tests/test262/built-ins/Date/S15.9.4_A5.js
new file mode 100644
index 0000000000..6e5619ad58
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/S15.9.4_A5.js
@@ -0,0 +1,12 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: Date constructor has length property whose value is 7
+esid: sec-date-constructor
+description: Checking Date.length property
+---*/
+assert(Date.hasOwnProperty("length"), 'Date.hasOwnProperty("length") must return true');
+assert.sameValue(Date.length, 7, 'The value of Date.length is expected to be 7');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/TimeClip_negative_zero.js b/js/src/tests/test262/built-ins/Date/TimeClip_negative_zero.js
new file mode 100644
index 0000000000..9d1645d482
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/TimeClip_negative_zero.js
@@ -0,0 +1,19 @@
+// Copyright (C) 2015 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-timeclip
+description: TimeClip converts negative zero to positive zero
+info: |
+  20.3.1.15 TimeClip (time)
+
+  ...
+  3. Return ToInteger(time) + (+0). (Adding a positive zero converts -0 to +0.)
+es6id: 20.3.1.15
+---*/
+
+var date = new Date(-0);
+
+assert.sameValue(date.getTime(), +0, "TimeClip does not return negative zero");
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/UTC/S15.9.4.3_A1_T1.js b/js/src/tests/test262/built-ins/Date/UTC/S15.9.4.3_A1_T1.js
new file mode 100644
index 0000000000..5f2531e1c2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/UTC/S15.9.4.3_A1_T1.js
@@ -0,0 +1,21 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.utc
+info: The Date property "UTC" has { DontEnum } attributes
+es5id: 15.9.4.3_A1_T1
+description: Checking absence of ReadOnly attribute
+---*/
+
+var x = Date.UTC;
+if (x === 1) {
+  Date.UTC = 2;
+} else {
+  Date.UTC = 1;
+}
+assert.notSameValue(Date.UTC, x, 'The value of Date.UTC is expected to not equal the value of `x`');
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/UTC/S15.9.4.3_A1_T2.js b/js/src/tests/test262/built-ins/Date/UTC/S15.9.4.3_A1_T2.js
new file mode 100644
index 0000000000..f859e0b452
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/UTC/S15.9.4.3_A1_T2.js
@@ -0,0 +1,15 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.utc
+info: The Date property "UTC" has { DontEnum } attributes
+es5id: 15.9.4.3_A1_T2
+description: Checking absence of DontDelete attribute
+---*/
+assert.notSameValue(delete Date.UTC, false, 'The value of delete Date.UTC is not false');
+assert(!Date.hasOwnProperty('UTC'), 'The value of !Date.hasOwnProperty(\'UTC\') is expected to be true');
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/UTC/S15.9.4.3_A1_T3.js b/js/src/tests/test262/built-ins/Date/UTC/S15.9.4.3_A1_T3.js
new file mode 100644
index 0000000000..43b8ccb055
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/UTC/S15.9.4.3_A1_T3.js
@@ -0,0 +1,21 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.utc
+info: The Date property "UTC" has { DontEnum } attributes
+es5id: 15.9.4.3_A1_T3
+description: Checking DontEnum attribute
+---*/
+assert(
+  !Date.propertyIsEnumerable('UTC'),
+  'The value of !Date.propertyIsEnumerable(\'UTC\') is expected to be true'
+);
+
+for (var x in Date) {
+  assert.notSameValue(x, "UTC", 'The value of x is not "UTC"');
+}
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/UTC/S15.9.4.3_A2_T1.js b/js/src/tests/test262/built-ins/Date/UTC/S15.9.4.3_A2_T1.js
new file mode 100644
index 0000000000..49e39e4d11
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/UTC/S15.9.4.3_A2_T1.js
@@ -0,0 +1,13 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.utc
+info: The "length" property of the "UTC" is 7
+es5id: 15.9.4.3_A2_T1
+description: The "length" property of the "UTC" is 7
+---*/
+assert.sameValue(Date.UTC.hasOwnProperty("length"), true, 'Date.UTC.hasOwnProperty("length") must return true');
+assert.sameValue(Date.UTC.length, 7, 'The value of Date.UTC.length is expected to be 7');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/UTC/S15.9.4.3_A3_T1.js b/js/src/tests/test262/built-ins/Date/UTC/S15.9.4.3_A3_T1.js
new file mode 100644
index 0000000000..c9261a5a5b
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/UTC/S15.9.4.3_A3_T1.js
@@ -0,0 +1,20 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.utc
+info: |
+    The Date.UTC property "length" has { ReadOnly, DontDelete, DontEnum }
+    attributes
+es5id: 15.9.4.3_A3_T1
+description: Checking ReadOnly attribute
+includes: [propertyHelper.js]
+---*/
+
+var x = Date.UTC.length;
+verifyNotWritable(Date.UTC, "length", null, 1);
+assert.sameValue(Date.UTC.length, x, 'The value of Date.UTC.length is expected to equal the value of x');
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/UTC/S15.9.4.3_A3_T2.js b/js/src/tests/test262/built-ins/Date/UTC/S15.9.4.3_A3_T2.js
new file mode 100644
index 0000000000..07ecc37b20
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/UTC/S15.9.4.3_A3_T2.js
@@ -0,0 +1,22 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.utc
+info: |
+    The Date.UTC property "length" has { ReadOnly, ! DontDelete, DontEnum }
+    attributes
+es5id: 15.9.4.3_A3_T2
+description: Checking DontDelete attribute
+---*/
+
+assert.sameValue(delete Date.UTC.length, true, 'The value of `delete Date.UTC.length` is expected to be true');
+
+assert(
+  !Date.UTC.hasOwnProperty('length'),
+  'The value of !Date.UTC.hasOwnProperty(\'length\') is expected to be true'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/UTC/S15.9.4.3_A3_T3.js b/js/src/tests/test262/built-ins/Date/UTC/S15.9.4.3_A3_T3.js
new file mode 100644
index 0000000000..f5d155d8a5
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/UTC/S15.9.4.3_A3_T3.js
@@ -0,0 +1,23 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.utc
+info: |
+    The Date.UTC property "length" has { ReadOnly, DontDelete, DontEnum }
+    attributes
+es5id: 15.9.4.3_A3_T3
+description: Checking DontEnum attribute
+---*/
+assert(
+  !Date.UTC.propertyIsEnumerable('length'),
+  'The value of !Date.UTC.propertyIsEnumerable(\'length\') is expected to be true'
+);
+
+for (var x in Date.UTC) {
+  assert.notSameValue(x, "length", 'The value of x is not "length"');
+}
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/UTC/browser.js b/js/src/tests/test262/built-ins/Date/UTC/browser.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/UTC/browser.js
diff --git a/js/src/tests/test262/built-ins/Date/UTC/coercion-errors.js b/js/src/tests/test262/built-ins/Date/UTC/coercion-errors.js
new file mode 100644
index 0000000000..7271172c12
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/UTC/coercion-errors.js
@@ -0,0 +1,61 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.utc
+description: Abrupt completions from coercing input values
+info: |
+  1. Let y be ? ToNumber(year).
+  2. Let m be ? ToNumber(month).
+  3. If date is supplied, let dt be ? ToNumber(date); else let dt be 1.
+  4. If hours is supplied, let h be ? ToNumber(hours); else let h be 0.
+  5. If minutes is supplied, let min be ? ToNumber(minutes); else let min be 0.
+  6. If seconds is supplied, let s be ? ToNumber(seconds); else let s be 0.
+  7. If ms is supplied, let milli be ? ToNumber(ms); else let milli be 0.
+  8. If y is not NaN and 0 ≤ ToInteger(y) ≤ 99, let yr be 1900+ToInteger(y);
+     otherwise, let yr be y.
+  9. Return TimeClip(MakeDate(MakeDay(yr, m, dt), MakeTime(h, min, s, milli))). 
+---*/
+
+var thrower = { toString: function() { throw new Test262Error(); } };
+var counter = { toString: function() { callCount += 1; } };
+var callCount = 0;
+
+assert.throws(Test262Error, function() {
+  Date.UTC(thrower, counter);
+}, 'year');
+assert.sameValue(callCount, 0, 'coercion halts following error from "year"');
+
+assert.throws(Test262Error, function() {
+  Date.UTC(0, thrower, counter);
+}, 'month');
+assert.sameValue(callCount, 0, 'coercion halts following error from "month"');
+
+assert.throws(Test262Error, function() {
+  Date.UTC(0, 0, thrower, counter);
+}, 'date');
+assert.sameValue(callCount, 0, 'coercion halts following error from "date"');
+
+assert.throws(Test262Error, function() {
+  Date.UTC(0, 0, 1, thrower, counter);
+}, 'hours');
+assert.sameValue(callCount, 0, 'coercion halts following error from "hours"');
+
+assert.throws(Test262Error, function() {
+  Date.UTC(0, 0, 1, 0, thrower, counter);
+}, 'minutes');
+assert.sameValue(
+  callCount, 0, 'coercion halts following error from "minutes"'
+);
+
+assert.throws(Test262Error, function() {
+  Date.UTC(0, 0, 1, 0, 0, thrower, counter);
+}, 'seconds');
+assert.sameValue(
+  callCount, 0, 'coercion halts following error from "seconds"'
+);
+
+assert.throws(Test262Error, function() {
+  Date.UTC(0, 0, 1, 0, 0, 0, thrower);
+}, 'ms');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/UTC/coercion-order.js b/js/src/tests/test262/built-ins/Date/UTC/coercion-order.js
new file mode 100644
index 0000000000..96d9cd6ad2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/UTC/coercion-order.js
@@ -0,0 +1,32 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.utc
+description: Order of input coercion
+info: |
+  1. Let y be ? ToNumber(year).
+  2. Let m be ? ToNumber(month).
+  3. If date is supplied, let dt be ? ToNumber(date); else let dt be 1.
+  4. If hours is supplied, let h be ? ToNumber(hours); else let h be 0.
+  5. If minutes is supplied, let min be ? ToNumber(minutes); else let min be 0.
+  6. If seconds is supplied, let s be ? ToNumber(seconds); else let s be 0.
+  7. If ms is supplied, let milli be ? ToNumber(ms); else let milli be 0.
+  8. If y is not NaN and 0 ≤ ToInteger(y) ≤ 99, let yr be 1900+ToInteger(y);
+     otherwise, let yr be y.
+  9. Return TimeClip(MakeDate(MakeDay(yr, m, dt), MakeTime(h, min, s, milli))). 
+---*/
+
+var log = '';
+var year = { toString: function() { log += 'year'; return 0; } };
+var month = { toString: function() { log += 'month'; return 0; } };
+var date = { toString: function() { log += 'date'; return 1; } };
+var hours = { toString: function() { log += 'hours'; return 0; } };
+var minutes = { toString: function() { log += 'minutes'; return 0; } };
+var seconds = { toString: function() { log += 'seconds'; return 0; } };
+var ms = { toString: function() { log += 'ms'; return 0; } };
+
+Date.UTC(year, month, date, hours,minutes, seconds, ms);
+
+assert.sameValue(log, 'yearmonthdatehoursminutessecondsms');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/UTC/fp-evaluation-order.js b/js/src/tests/test262/built-ins/Date/UTC/fp-evaluation-order.js
new file mode 100644
index 0000000000..57d9ec6800
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/UTC/fp-evaluation-order.js
@@ -0,0 +1,22 @@
+// Copyright (C) 2020 Kevin Gibbons. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.utc
+description: arithmetic in Date is done on floating-point numbers
+info: |
+  [...]
+  Return TimeClip(MakeDate(MakeDay(yr, m, dt), MakeTime(h, min, s, milli))).
+
+  #sec-maketime
+
+  Let _t_ be ((_h_ `*` msPerHour `+` _m_ `*` msPerMinute) `+` _s_ `*` msPerSecond) `+` _milli_, performing the arithmetic according to IEEE 754-2019 rules (that is, as if using the ECMAScript operators `*` and `+`).
+
+  #sec-makedate
+
+  Return day × msPerDay + time.
+---*/
+
+assert.sameValue(Date.UTC(1970, 0, 1, 80063993375, 29, 1, -288230376151711740), 29312, 'order of operations / precision in MakeTime');
+assert.sameValue(Date.UTC(1970, 0, 213503982336, 0, 0, 0, -18446744073709552000), 34447360, 'precision in MakeDate');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/UTC/infinity-make-day.js b/js/src/tests/test262/built-ins/Date/UTC/infinity-make-day.js
new file mode 100644
index 0000000000..e4acdd5e3e
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/UTC/infinity-make-day.js
@@ -0,0 +1,29 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.utc
+description: Infinite values specified to MakeDay produce NaN
+info: |
+  [...]
+  9. Return TimeClip(MakeDate(MakeDay(yr, m, dt), MakeTime(h, min, s, milli))).
+
+  MakeDay (year, month, date)
+
+  1. If year is not finite or month is not finite or date is not finite, return
+     NaN.
+---*/
+
+assert.sameValue(Date.UTC(Infinity), NaN, 'year: Infinity - single arg');
+assert.sameValue(Date.UTC(-Infinity), NaN, 'year: -Infinity - single arg');
+
+assert.sameValue(Date.UTC(Infinity, 0), NaN, 'year: Infinity');
+assert.sameValue(Date.UTC(-Infinity, 0), NaN, 'year: -Infinity');
+
+assert.sameValue(Date.UTC(0, Infinity), NaN, 'month: Infinity');
+assert.sameValue(Date.UTC(0, -Infinity), NaN, 'month: -Infinity');
+
+assert.sameValue(Date.UTC(0, 0, Infinity), NaN, 'date: Infinity');
+assert.sameValue(Date.UTC(0, 0, -Infinity), NaN, 'date: -Infinity');
+
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/UTC/infinity-make-time.js b/js/src/tests/test262/built-ins/Date/UTC/infinity-make-time.js
new file mode 100644
index 0000000000..b54dc3fb87
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/UTC/infinity-make-time.js
@@ -0,0 +1,28 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.utc
+description: Infinite values specified to MakeTime produce NaN
+info: |
+  [...]
+  9. Return TimeClip(MakeDate(MakeDay(yr, m, dt), MakeTime(h, min, s, milli))). 
+
+  MakeTime (hour, min, sec, ms)
+
+  1. If hour is not finite or min is not finite or sec is not finite or ms is
+     not finite, return NaN.
+---*/
+
+assert.sameValue(Date.UTC(0, 0, 1, Infinity), NaN, 'hour: Infinity');
+assert.sameValue(Date.UTC(0, 0, 1, -Infinity), NaN, 'hour: -Infinity');
+
+assert.sameValue(Date.UTC(0, 0, 1, 0, Infinity), NaN, 'minute: Infinity');
+assert.sameValue(Date.UTC(0, 0, 1, 0, -Infinity), NaN, 'minute: -Infinity');
+
+assert.sameValue(Date.UTC(0, 0, 1, 0, 0, Infinity), NaN, 'second: Infinity');
+assert.sameValue(Date.UTC(0, 0, 1, 0, 0, -Infinity), NaN, 'second: -Infinity');
+
+assert.sameValue(Date.UTC(0, 0, 1, 0, 0, 0, Infinity), NaN, 'ms: Infinity');
+assert.sameValue(Date.UTC(0, 0, 1, 0, 0, 0, -Infinity), NaN, 'ms: -Infinity');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/UTC/name.js b/js/src/tests/test262/built-ins/Date/UTC/name.js
new file mode 100644
index 0000000000..3310708e58
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/UTC/name.js
@@ -0,0 +1,28 @@
+// Copyright (C) 2015 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.utc
+description: >
+  Date.UTC.name is "UTC".
+info: |
+  Date.UTC ( year, month [ , date [ , hours [ , minutes [ , seconds [ , ms ] ] ] ] ] )
+
+  17 ECMAScript Standard Built-in Objects:
+    Every built-in Function object, including constructors, that is not
+    identified as an anonymous function has a name property whose value
+    is a String.
+
+    Unless otherwise specified, the name property of a built-in Function
+    object, if it exists, has the attributes { [[Writable]]: false,
+    [[Enumerable]]: false, [[Configurable]]: true }.
+includes: [propertyHelper.js]
+---*/
+
+assert.sameValue(Date.UTC.name, "UTC");
+
+verifyNotEnumerable(Date.UTC, "name");
+verifyNotWritable(Date.UTC, "name");
+verifyConfigurable(Date.UTC, "name");
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/UTC/nans.js b/js/src/tests/test262/built-ins/Date/UTC/nans.js
new file mode 100644
index 0000000000..bb34f493f1
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/UTC/nans.js
@@ -0,0 +1,28 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.utc
+description: NaN value handling
+info: |
+  1. Let y be ? ToNumber(year).
+  2. Let m be ? ToNumber(month).
+  3. If date is supplied, let dt be ? ToNumber(date); else let dt be 1.
+  4. If hours is supplied, let h be ? ToNumber(hours); else let h be 0.
+  5. If minutes is supplied, let min be ? ToNumber(minutes); else let min be 0.
+  6. If seconds is supplied, let s be ? ToNumber(seconds); else let s be 0.
+  7. If ms is supplied, let milli be ? ToNumber(ms); else let milli be 0.
+  8. If y is not NaN and 0 ≤ ToInteger(y) ≤ 99, let yr be 1900+ToInteger(y);
+     otherwise, let yr be y.
+  9. Return TimeClip(MakeDate(MakeDay(yr, m, dt), MakeTime(h, min, s, milli))).
+---*/
+
+assert.sameValue(Date.UTC(NaN), NaN, 'year');
+assert.sameValue(Date.UTC(NaN, 0), NaN, 'year');
+assert.sameValue(Date.UTC(1970, NaN), NaN, 'month');
+assert.sameValue(Date.UTC(1970, 0, NaN), NaN, 'date');
+assert.sameValue(Date.UTC(1970, 0, 1, NaN), NaN, 'hours');
+assert.sameValue(Date.UTC(1970, 0, 1, 0, NaN), NaN, 'minutes');
+assert.sameValue(Date.UTC(1970, 0, 1, 0, 0, NaN), NaN, 'seconds');
+assert.sameValue(Date.UTC(1970, 0, 1, 0, 0, 0, NaN), NaN, 'ms');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/UTC/no-arg.js b/js/src/tests/test262/built-ins/Date/UTC/no-arg.js
new file mode 100644
index 0000000000..b9a98a4f1b
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/UTC/no-arg.js
@@ -0,0 +1,21 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.utc
+description: Tests for non optional arguments
+info: |
+  1. Let y be ? ToNumber(year).
+  2. Let m be ? ToNumber(month).
+  3. If date is supplied, let dt be ? ToNumber(date); else let dt be 1.
+  4. If hours is supplied, let h be ? ToNumber(hours); else let h be 0.
+  5. If minutes is supplied, let min be ? ToNumber(minutes); else let min be 0.
+  6. If seconds is supplied, let s be ? ToNumber(seconds); else let s be 0.
+  7. If ms is supplied, let milli be ? ToNumber(ms); else let milli be 0.
+  8. If y is not NaN and 0 ≤ ToInteger(y) ≤ 99, let yr be 1900+ToInteger(y);
+     otherwise, let yr be y.
+  9. Return TimeClip(MakeDate(MakeDay(yr, m, dt), MakeTime(h, min, s, milli))).
+---*/
+
+assert.sameValue(Date.UTC(), NaN, 'missing non-optional year argument');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/UTC/non-integer-values.js b/js/src/tests/test262/built-ins/Date/UTC/non-integer-values.js
new file mode 100644
index 0000000000..998d0c2182
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/UTC/non-integer-values.js
@@ -0,0 +1,31 @@
+// Copyright (C) 2018 Viktor Mukhachev. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.utc
+description: non-integer values are converted to integers using `ToInteger`
+info: |
+  [...]
+  Return TimeClip(MakeDate(MakeDay(yr, m, dt), MakeTime(h, min, s, milli))).
+
+  #sec-timeclip
+
+  Let clippedTime be ! ToInteger(time).
+
+  #sec-makeday
+
+  Let y be ! ToInteger(year).
+  Let m be ! ToInteger(month).
+  Let dt be ! ToInteger(date).
+
+  #sec-maketime
+
+  Let h be ! ToInteger(hour).
+  Let m be ! ToInteger(min).
+  Let s be ! ToInteger(sec).
+  Let milli be ! ToInteger(ms).
+---*/
+
+assert.sameValue(Date.UTC(1970.9, 0.9, 1.9, 0.9, 0.9, 0.9, 0.9), 0, 'positive non-integer values');
+assert.sameValue(Date.UTC(-1970.9, -0.9, -0.9, -0.9, -0.9, -0.9, -0.9), -124334438400000, 'negative non-integer values');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/UTC/not-a-constructor.js b/js/src/tests/test262/built-ins/Date/UTC/not-a-constructor.js
new file mode 100644
index 0000000000..b655948879
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/UTC/not-a-constructor.js
@@ -0,0 +1,31 @@
+// Copyright (C) 2020 Rick Waldron. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-ecmascript-standard-built-in-objects
+description: >
+  Date.UTC does not implement [[Construct]], is not new-able
+info: |
+  ECMAScript Function Objects
+
+  Built-in function objects that are not identified as constructors do not
+  implement the [[Construct]] internal method unless otherwise specified in
+  the description of a particular function.
+
+  sec-evaluatenew
+
+  ...
+  7. If IsConstructor(constructor) is false, throw a TypeError exception.
+  ...
+includes: [isConstructor.js]
+features: [Reflect.construct, arrow-function]
+---*/
+
+assert.sameValue(isConstructor(Date.UTC), false, 'isConstructor(Date.UTC) must return false');
+
+assert.throws(TypeError, () => {
+  new Date.UTC();
+}, '`new Date.UTC()` throws TypeError');
+
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/UTC/overflow-make-day.js b/js/src/tests/test262/built-ins/Date/UTC/overflow-make-day.js
new file mode 100644
index 0000000000..8aa640d1a0
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/UTC/overflow-make-day.js
@@ -0,0 +1,28 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.utc
+description: Values specified to MakeDay exceed their calendar boundaries
+info: |
+  [...]
+  9. Return TimeClip(MakeDate(MakeDay(yr, m, dt), MakeTime(h, min, s, milli))). 
+
+  MakeDay (year, month, date)
+
+  [...]
+  5. Let ym be y + floor(m / 12).
+  [...]
+  7. Find a value t such that YearFromTime(t) is ym and MonthFromTime(t) is mn
+     and DateFromTime(t) is 1; but if this is not possible (because some
+     argument is out of range), return NaN.
+  8. Return Day(t) + dt - 1.
+---*/
+
+assert.sameValue(Date.UTC(2016, 12), 1483228800000, 'month: 12');
+assert.sameValue(Date.UTC(2016, 13), 1485907200000, 'month: 13');
+assert.sameValue(Date.UTC(2016, 144), 1830297600000, 'month: 144');
+
+assert.sameValue(Date.UTC(2016, 0, 33), 1454371200000, 'day greater than month');
+assert.sameValue(Date.UTC(2016, 2, -27), 1454371200000, 'day negative value');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/UTC/overflow-make-time.js b/js/src/tests/test262/built-ins/Date/UTC/overflow-make-time.js
new file mode 100644
index 0000000000..db975cd160
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/UTC/overflow-make-time.js
@@ -0,0 +1,37 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.utc
+description: Values specified to MakeTime exceed their time boundaries
+info: |
+  [...]
+  9. Return TimeClip(MakeDate(MakeDay(yr, m, dt), MakeTime(h, min, s, milli))). 
+
+  MakeTime (hour, min, sec, ms)
+
+  1. If hour is not finite or min is not finite or sec is not finite or ms is
+     not finite, return NaN.
+  2. Let h be ToInteger(hour).
+  3. Let m be ToInteger(min).
+  4. Let s be ToInteger(sec).
+  5. Let milli be ToInteger(ms).
+  6. Let t be h * msPerHour + m * msPerMinute + s * msPerSecond + milli,
+     performing the arithmetic according to IEEE 754-2008 rules (that is, as if
+     using the ECMAScript operators * and +).
+  7. Return t.
+---*/
+
+assert.sameValue(Date.UTC(2016, 6, 5, -1), 1467673200000, 'hour: -1');
+assert.sameValue(Date.UTC(2016, 6, 5, 24), 1467763200000, 'hour: 24');
+assert.sameValue(Date.UTC(2016, 6, 5, 0, -1), 1467676740000, 'minute: -1');
+assert.sameValue(Date.UTC(2016, 6, 5, 0, 60), 1467680400000, 'minute: 60');
+assert.sameValue(Date.UTC(2016, 6, 5, 0, 0, -1), 1467676799000, 'second: -1');
+assert.sameValue(Date.UTC(2016, 6, 5, 0, 0, 60), 1467676860000, 'second: 60');
+assert.sameValue(
+  Date.UTC(2016, 6, 5, 0, 0, 0, -1), 1467676799999, 'millisecond: -1'
+);
+assert.sameValue(
+  Date.UTC(2016, 6, 5, 0, 0, 0, 1000), 1467676801000, 'millisecond: 1000'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/UTC/return-value.js b/js/src/tests/test262/built-ins/Date/UTC/return-value.js
new file mode 100644
index 0000000000..1564c94b55
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/UTC/return-value.js
@@ -0,0 +1,57 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.utc
+description: Return value of `Date.UTC`
+info: |
+  1. Let y be ? ToNumber(year).
+  2. Let m be ? ToNumber(month).
+  3. If date is supplied, let dt be ? ToNumber(date); else let dt be 1.
+  4. If hours is supplied, let h be ? ToNumber(hours); else let h be 0.
+  5. If minutes is supplied, let min be ? ToNumber(minutes); else let min be 0.
+  6. If seconds is supplied, let s be ? ToNumber(seconds); else let s be 0.
+  7. If ms is supplied, let milli be ? ToNumber(ms); else let milli be 0.
+  8. If y is not NaN and 0 ≤ ToInteger(y) ≤ 99, let yr be 1900+ToInteger(y);
+     otherwise, let yr be y.
+  9. Return TimeClip(MakeDate(MakeDay(yr, m, dt), MakeTime(h, min, s, milli))).
+---*/
+
+assert.sameValue(Date.UTC(1970), 0, '1970');
+
+assert.sameValue(Date.UTC(1970, 0), 0, '1970, 0');
+assert.sameValue(Date.UTC(2016, 0), 1451606400000, '2016, 0');
+assert.sameValue(Date.UTC(2016, 6), 1467331200000, '2016, 6');
+
+assert.sameValue(Date.UTC(2016, 6, 1), 1467331200000, '2016, 6, 1');
+assert.sameValue(Date.UTC(2016, 6, 5), 1467676800000, '2016, 6, 5');
+
+assert.sameValue(Date.UTC(2016, 6, 5, 0), 1467676800000, '2016, 6, 5, 0');
+assert.sameValue(Date.UTC(2016, 6, 5, 15), 1467730800000, '2016, 6, 5, 15');
+
+assert.sameValue(
+  Date.UTC(2016, 6, 5, 15, 0), 1467730800000, '2016, 6, 5, 15, 0'
+);
+assert.sameValue(
+  Date.UTC(2016, 6, 5, 15, 34), 1467732840000, '2016, 6, 5, 15, 34'
+);
+
+assert.sameValue(
+  Date.UTC(2016, 6, 5, 15, 34, 0), 1467732840000, '2016, 6, 5, 15, 34, 0'
+);
+assert.sameValue(
+  Date.UTC(2016, 6, 5, 15, 34, 45), 1467732885000, '2016, 6, 5, 15, 34, 45'
+);
+
+
+assert.sameValue(
+  Date.UTC(2016, 6, 5, 15, 34, 45, 0),
+  1467732885000,
+  '2016, 6, 5, 15, 34, 45, 0'
+);
+assert.sameValue(
+  Date.UTC(2016, 6, 5, 15, 34, 45, 876),
+  1467732885876,
+  '2016, 6, 5, 15, 34, 45, 0'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/UTC/shell.js b/js/src/tests/test262/built-ins/Date/UTC/shell.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/UTC/shell.js
diff --git a/js/src/tests/test262/built-ins/Date/UTC/time-clip.js b/js/src/tests/test262/built-ins/Date/UTC/time-clip.js
new file mode 100644
index 0000000000..5641b3d316
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/UTC/time-clip.js
@@ -0,0 +1,19 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.utc
+description: Time clipping
+info: |
+  [...]
+  9. Return TimeClip(MakeDate(MakeDay(yr, m, dt), MakeTime(h, min, s, milli))). 
+
+  TimeClip (time)
+
+  1. If time is not finite, return NaN.
+  2. If abs(time) > 8.64 × 1015, return NaN.
+---*/
+
+assert.notSameValue(Date.UTC(275760, 8, 13, 0, 0, 0, 0), NaN);
+assert.sameValue(Date.UTC(275760, 8, 13, 0, 0, 0, 1), NaN);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/UTC/year-offset.js b/js/src/tests/test262/built-ins/Date/UTC/year-offset.js
new file mode 100644
index 0000000000..cea354ea4e
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/UTC/year-offset.js
@@ -0,0 +1,28 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.utc
+description: Conditional offset of provided `year` value
+info: |
+  1. Let y be ? ToNumber(year).
+  [...]
+  8. If y is not NaN and 0 ≤ ToInteger(y) ≤ 99, let yr be 1900+ToInteger(y);
+     otherwise, let yr be y.
+  9. Return TimeClip(MakeDate(MakeDay(yr, m, dt), MakeTime(h, min, s, milli))). 
+---*/
+
+assert.sameValue(Date.UTC(-1, 0), -62198755200000, '-1 (no offset)');
+
+assert.sameValue(Date.UTC(0, 0), -2208988800000, '+0');
+assert.sameValue(Date.UTC(-0, 0), -2208988800000, '-0');
+assert.sameValue(Date.UTC(-0.999999, 0), -2208988800000, '-0.999999');
+
+assert.sameValue(Date.UTC(70, 0), 0, '70');
+assert.sameValue(Date.UTC(70, 0), 0, '70.999999');
+
+assert.sameValue(Date.UTC(99, 0), 915148800000, '99');
+assert.sameValue(Date.UTC(99.999999, 0), 915148800000, '99.999999');
+
+assert.sameValue(Date.UTC(100, 0), -59011459200000, '100 (no offset)');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/browser.js b/js/src/tests/test262/built-ins/Date/browser.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/browser.js
diff --git a/js/src/tests/test262/built-ins/Date/coercion-errors.js b/js/src/tests/test262/built-ins/Date/coercion-errors.js
new file mode 100644
index 0000000000..5540298f58
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/coercion-errors.js
@@ -0,0 +1,66 @@
+// Copyright (C) 2017 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date-year-month-date-hours-minutes-seconds-ms
+description: Abrupt completions from coercing input values
+info: |
+  3. If NewTarget is not undefined, then
+    a. Let y be ? ToNumber(year).
+    b. Let m be ? ToNumber(month).
+    c. If date is supplied, let dt be ? ToNumber(date); else let dt be 1.
+    d. If hours is supplied, let h be ? ToNumber(hours); else let h be 0.
+    e. If minutes is supplied, let min be ? ToNumber(minutes); else let min be 0.
+    f. If seconds is supplied, let s be ? ToNumber(seconds); else let s be 0.
+    g. If ms is supplied, let milli be ? ToNumber(ms); else let milli be 0.
+    h. If y is not NaN and 0 ≤ ToInteger(y) ≤ 99, let yr be 1900+ToInteger(y); otherwise,
+      let yr be y.
+    i. Let finalDate be MakeDate(MakeDay(yr, m, dt), MakeTime(h, min, s, milli)).
+    j. Let O be ? OrdinaryCreateFromConstructor(NewTarget, "%DatePrototype%", « [[DateValue]] »).
+    k. Set O.[[DateValue]] to TimeClip(UTC(finalDate)).
+    l. Return O.
+---*/
+
+var thrower = { toString: function() { throw new Test262Error(); } };
+var counter = { toString: function() { callCount += 1; } };
+var callCount = 0;
+
+assert.throws(Test262Error, function() {
+  new Date(thrower, counter);
+}, 'year');
+assert.sameValue(callCount, 0, 'coercion halts following error from "year"');
+
+assert.throws(Test262Error, function() {
+  new Date(0, thrower, counter);
+}, 'month');
+assert.sameValue(callCount, 0, 'coercion halts following error from "month"');
+
+assert.throws(Test262Error, function() {
+  new Date(0, 0, thrower, counter);
+}, 'date');
+assert.sameValue(callCount, 0, 'coercion halts following error from "date"');
+
+assert.throws(Test262Error, function() {
+  new Date(0, 0, 1, thrower, counter);
+}, 'hours');
+assert.sameValue(callCount, 0, 'coercion halts following error from "hours"');
+
+assert.throws(Test262Error, function() {
+  new Date(0, 0, 1, 0, thrower, counter);
+}, 'minutes');
+assert.sameValue(
+  callCount, 0, 'coercion halts following error from "minutes"'
+);
+
+assert.throws(Test262Error, function() {
+  new Date(0, 0, 1, 0, 0, thrower, counter);
+}, 'seconds');
+assert.sameValue(
+  callCount, 0, 'coercion halts following error from "seconds"'
+);
+
+assert.throws(Test262Error, function() {
+  new Date(0, 0, 1, 0, 0, 0, thrower);
+}, 'ms');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/coercion-order.js b/js/src/tests/test262/built-ins/Date/coercion-order.js
new file mode 100644
index 0000000000..7abcfe8d9d
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/coercion-order.js
@@ -0,0 +1,37 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date-year-month-date-hours-minutes-seconds-ms
+description: Order of input coercion
+info: |
+  3. If NewTarget is not undefined, then
+    a. Let y be ? ToNumber(year).
+    b. Let m be ? ToNumber(month).
+    c. If date is supplied, let dt be ? ToNumber(date); else let dt be 1.
+    d. If hours is supplied, let h be ? ToNumber(hours); else let h be 0.
+    e. If minutes is supplied, let min be ? ToNumber(minutes); else let min be 0.
+    f. If seconds is supplied, let s be ? ToNumber(seconds); else let s be 0.
+    g. If ms is supplied, let milli be ? ToNumber(ms); else let milli be 0.
+    h. If y is not NaN and 0 ≤ ToInteger(y) ≤ 99, let yr be 1900+ToInteger(y); otherwise,
+      let yr be y.
+    i. Let finalDate be MakeDate(MakeDay(yr, m, dt), MakeTime(h, min, s, milli)).
+    j. Let O be ? OrdinaryCreateFromConstructor(NewTarget, "%DatePrototype%", « [[DateValue]] »).
+    k. Set O.[[DateValue]] to TimeClip(UTC(finalDate)).
+    l. Return O.
+---*/
+
+var log = '';
+var year = { toString: function() { log += 'year'; return 0; } };
+var month = { toString: function() { log += 'month'; return 0; } };
+var date = { toString: function() { log += 'date'; return 1; } };
+var hours = { toString: function() { log += 'hours'; return 0; } };
+var minutes = { toString: function() { log += 'minutes'; return 0; } };
+var seconds = { toString: function() { log += 'seconds'; return 0; } };
+var ms = { toString: function() { log += 'ms'; return 0; } };
+
+new Date(year, month, date, hours,minutes, seconds, ms);
+
+assert.sameValue(log, 'yearmonthdatehoursminutessecondsms');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/construct_with_date.js b/js/src/tests/test262/built-ins/Date/construct_with_date.js
new file mode 100644
index 0000000000..9a52a090bc
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/construct_with_date.js
@@ -0,0 +1,31 @@
+// Copyright (C) 2015 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date-value
+description: Date constructor called with Date object
+info: |
+  20.3.2.2 Date ( value )
+
+  ...
+  3. If NewTarget is not undefined, then
+    a. If Type(value) is Object and value has a [[DateValue]] internal slot, then
+      i. Let tv be thisTimeValue(value).
+es6id: 20.3.2.2
+---*/
+
+var dateValue = 1438560000000;
+
+var oldDate = new Date(dateValue);
+oldDate.toString = function() {
+  throw new Test262Error("toString() method called");
+};
+oldDate.valueOf = function() {
+  throw new Test262Error("valueOf() method called");
+};
+
+var newDate = new Date(oldDate);
+
+assert.sameValue(newDate.getTime(), dateValue, "Same date value");
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/is-a-constructor.js b/js/src/tests/test262/built-ins/Date/is-a-constructor.js
new file mode 100644
index 0000000000..174ac0070d
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/is-a-constructor.js
@@ -0,0 +1,26 @@
+// Copyright (C) 2020 Rick Waldron. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-ecmascript-standard-built-in-objects
+description: >
+  The Date constructor implements [[Construct]]
+info: |
+  IsConstructor ( argument )
+
+  The abstract operation IsConstructor takes argument argument (an ECMAScript language value).
+  It determines if argument is a function object with a [[Construct]] internal method.
+  It performs the following steps when called:
+
+  If Type(argument) is not Object, return false.
+  If argument has a [[Construct]] internal method, return true.
+  Return false.
+includes: [isConstructor.js]
+features: [Reflect.construct]
+---*/
+
+assert.sameValue(isConstructor(Date), true, 'isConstructor(Date) must return true');
+new Date();
+  
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/name.js b/js/src/tests/test262/built-ins/Date/name.js
new file mode 100644
index 0000000000..29e869ec72
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/name.js
@@ -0,0 +1,25 @@
+// Copyright (c) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date-constructor
+description: Constructor "name" property descriptor
+info: |
+  17 ECMAScript Standard Built-in Objects:
+
+  Every built-in Function object, including constructors, that is not
+  identified as an anonymous function has a name property whose value is a
+  String.
+
+  Unless otherwise specified, the name property of a built-in Function object,
+  if it exists, has the attributes { [[Writable]]: false, [[Enumerable]]:
+  false, [[Configurable]]: true }.
+includes: [propertyHelper.js]
+---*/
+
+assert.sameValue(Date.name, "Date");
+
+verifyNotEnumerable(Date, "name");
+verifyNotWritable(Date, "name");
+verifyConfigurable(Date, "name");
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/now/15.9.4.4-0-1.js b/js/src/tests/test262/built-ins/Date/now/15.9.4.4-0-1.js
new file mode 100644
index 0000000000..b345e3a85e
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/now/15.9.4.4-0-1.js
@@ -0,0 +1,11 @@
+// Copyright (c) 2012 Ecma International.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.now
+description: Date.now must exist as a function
+---*/
+
+assert.sameValue(typeof Date.now, "function", 'typeof Date.now');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/now/15.9.4.4-0-2.js b/js/src/tests/test262/built-ins/Date/now/15.9.4.4-0-2.js
new file mode 100644
index 0000000000..63799dc55a
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/now/15.9.4.4-0-2.js
@@ -0,0 +1,11 @@
+// Copyright (c) 2012 Ecma International.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.now
+description: Date.now must exist as a function taking 0 parameters
+---*/
+
+assert.sameValue(Date.now.length, 0, 'Date.now.length');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/now/15.9.4.4-0-3.js b/js/src/tests/test262/built-ins/Date/now/15.9.4.4-0-3.js
new file mode 100644
index 0000000000..8325417626
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/now/15.9.4.4-0-3.js
@@ -0,0 +1,13 @@
+// Copyright (c) 2012 Ecma International.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.now
+description: Date.now must exist as a function
+---*/
+
+var fun = Date.now;
+
+assert.sameValue(typeof(fun), "function", 'typeof (fun)');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/now/15.9.4.4-0-4.js b/js/src/tests/test262/built-ins/Date/now/15.9.4.4-0-4.js
new file mode 100644
index 0000000000..7f17a75fb2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/now/15.9.4.4-0-4.js
@@ -0,0 +1,11 @@
+// Copyright (c) 2012 Ecma International.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.now
+description: Date.now - returns number
+---*/
+
+assert.sameValue(typeof Date.now(), "number", 'typeof Date.now()');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/now/browser.js b/js/src/tests/test262/built-ins/Date/now/browser.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/now/browser.js
diff --git a/js/src/tests/test262/built-ins/Date/now/name.js b/js/src/tests/test262/built-ins/Date/now/name.js
new file mode 100644
index 0000000000..4189f1f4e7
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/now/name.js
@@ -0,0 +1,28 @@
+// Copyright (C) 2015 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.now
+description: >
+  Date.now.name is "now".
+info: |
+  Date.now ( )
+
+  17 ECMAScript Standard Built-in Objects:
+    Every built-in Function object, including constructors, that is not
+    identified as an anonymous function has a name property whose value
+    is a String.
+
+    Unless otherwise specified, the name property of a built-in Function
+    object, if it exists, has the attributes { [[Writable]]: false,
+    [[Enumerable]]: false, [[Configurable]]: true }.
+includes: [propertyHelper.js]
+---*/
+
+assert.sameValue(Date.now.name, "now");
+
+verifyNotEnumerable(Date.now, "name");
+verifyNotWritable(Date.now, "name");
+verifyConfigurable(Date.now, "name");
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/now/not-a-constructor.js b/js/src/tests/test262/built-ins/Date/now/not-a-constructor.js
new file mode 100644
index 0000000000..d6a7cf0555
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/now/not-a-constructor.js
@@ -0,0 +1,31 @@
+// Copyright (C) 2020 Rick Waldron. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-ecmascript-standard-built-in-objects
+description: >
+  Date.now does not implement [[Construct]], is not new-able
+info: |
+  ECMAScript Function Objects
+
+  Built-in function objects that are not identified as constructors do not
+  implement the [[Construct]] internal method unless otherwise specified in
+  the description of a particular function.
+
+  sec-evaluatenew
+
+  ...
+  7. If IsConstructor(constructor) is false, throw a TypeError exception.
+  ...
+includes: [isConstructor.js]
+features: [Reflect.construct, arrow-function]
+---*/
+
+assert.sameValue(isConstructor(Date.now), false, 'isConstructor(Date.now) must return false');
+
+assert.throws(TypeError, () => {
+  new Date.now();
+}, '`new Date.now()` throws TypeError');
+
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/now/shell.js b/js/src/tests/test262/built-ins/Date/now/shell.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/now/shell.js
diff --git a/js/src/tests/test262/built-ins/Date/parse/S15.9.4.2_A1_T1.js b/js/src/tests/test262/built-ins/Date/parse/S15.9.4.2_A1_T1.js
new file mode 100644
index 0000000000..3409d2dfff
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/parse/S15.9.4.2_A1_T1.js
@@ -0,0 +1,20 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date property "parse" has { DontEnum } attributes
+esid: sec-date.parse
+description: Checking absence of ReadOnly attribute
+---*/
+
+var x = Date.parse;
+if (x === 1) {
+  Date.parse = 2;
+} else {
+  Date.parse = 1;
+}
+assert.notSameValue(Date.parse, x, 'The value of Date.parse is expected to not equal the value of `x`');
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/parse/S15.9.4.2_A1_T2.js b/js/src/tests/test262/built-ins/Date/parse/S15.9.4.2_A1_T2.js
new file mode 100644
index 0000000000..c0991c97d4
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/parse/S15.9.4.2_A1_T2.js
@@ -0,0 +1,14 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date property "parse" has { DontEnum } attributes
+esid: sec-date.parse
+description: Checking absence of DontDelete attribute
+---*/
+assert.notSameValue(delete Date.parse, false, 'The value of delete Date.parse is not false');
+assert(!Date.hasOwnProperty('parse'), 'The value of !Date.hasOwnProperty(\'parse\') is expected to be true');
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/parse/S15.9.4.2_A1_T3.js b/js/src/tests/test262/built-ins/Date/parse/S15.9.4.2_A1_T3.js
new file mode 100644
index 0000000000..e5f2523137
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/parse/S15.9.4.2_A1_T3.js
@@ -0,0 +1,20 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date property "parse" has { DontEnum } attributes
+esid: sec-date.parse
+description: Checking DontEnum attribute
+---*/
+assert(
+  !Date.propertyIsEnumerable('parse'),
+  'The value of !Date.propertyIsEnumerable(\'parse\') is expected to be true'
+);
+
+for (var x in Date) {
+  assert.notSameValue(x, "parse", 'The value of x is not "parse"');
+}
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/parse/S15.9.4.2_A2_T1.js b/js/src/tests/test262/built-ins/Date/parse/S15.9.4.2_A2_T1.js
new file mode 100644
index 0000000000..d066cbbd07
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/parse/S15.9.4.2_A2_T1.js
@@ -0,0 +1,12 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The "length" property of the "parse" is 1
+esid: sec-date.parse
+description: The "length" property of the "parse" is 1
+---*/
+assert.sameValue(Date.parse.hasOwnProperty("length"), true, 'Date.parse.hasOwnProperty("length") must return true');
+assert.sameValue(Date.parse.length, 1, 'The value of Date.parse.length is expected to be 1');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/parse/S15.9.4.2_A3_T1.js b/js/src/tests/test262/built-ins/Date/parse/S15.9.4.2_A3_T1.js
new file mode 100644
index 0000000000..0c0929164c
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/parse/S15.9.4.2_A3_T1.js
@@ -0,0 +1,19 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.parse property "length" has { ReadOnly, DontDelete, DontEnum }
+    attributes
+esid: sec-date.parse
+description: Checking ReadOnly attribute
+includes: [propertyHelper.js]
+---*/
+
+var x = Date.parse.length;
+verifyNotWritable(Date.parse, "length", null, 1);
+assert.sameValue(Date.parse.length, x, 'The value of Date.parse.length is expected to equal the value of x');
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/parse/S15.9.4.2_A3_T2.js b/js/src/tests/test262/built-ins/Date/parse/S15.9.4.2_A3_T2.js
new file mode 100644
index 0000000000..f224b1fbc2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/parse/S15.9.4.2_A3_T2.js
@@ -0,0 +1,20 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.parse property "length" has { ReadOnly, ! DontDelete, DontEnum }
+    attributes
+esid: sec-date.parse
+description: Checking DontDelete attribute
+---*/
+assert.sameValue(delete Date.parse.length, true, 'The value of `delete Date.parse.length` is expected to be true');
+
+assert(
+  !Date.parse.hasOwnProperty('length'),
+  'The value of !Date.parse.hasOwnProperty(\'length\') is expected to be true'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/parse/S15.9.4.2_A3_T3.js b/js/src/tests/test262/built-ins/Date/parse/S15.9.4.2_A3_T3.js
new file mode 100644
index 0000000000..4c7735de22
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/parse/S15.9.4.2_A3_T3.js
@@ -0,0 +1,22 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.parse property "length" has { ReadOnly, DontDelete, DontEnum }
+    attributes
+esid: sec-date.parse
+description: Checking DontEnum attribute
+---*/
+assert(
+  !Date.parse.propertyIsEnumerable('length'),
+  'The value of !Date.parse.propertyIsEnumerable(\'length\') is expected to be true'
+);
+
+for (var x in Date.parse) {
+  assert.notSameValue(x, "length", 'The value of x is not "length"');
+}
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/parse/browser.js b/js/src/tests/test262/built-ins/Date/parse/browser.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/parse/browser.js
diff --git a/js/src/tests/test262/built-ins/Date/parse/name.js b/js/src/tests/test262/built-ins/Date/parse/name.js
new file mode 100644
index 0000000000..79595c22f8
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/parse/name.js
@@ -0,0 +1,28 @@
+// Copyright (C) 2015 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.parse
+description: >
+  Date.parse.name is "parse".
+info: |
+  Date.parse ( string )
+
+  17 ECMAScript Standard Built-in Objects:
+    Every built-in Function object, including constructors, that is not
+    identified as an anonymous function has a name property whose value
+    is a String.
+
+    Unless otherwise specified, the name property of a built-in Function
+    object, if it exists, has the attributes { [[Writable]]: false,
+    [[Enumerable]]: false, [[Configurable]]: true }.
+includes: [propertyHelper.js]
+---*/
+
+assert.sameValue(Date.parse.name, "parse");
+
+verifyNotEnumerable(Date.parse, "name");
+verifyNotWritable(Date.parse, "name");
+verifyConfigurable(Date.parse, "name");
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/parse/not-a-constructor.js b/js/src/tests/test262/built-ins/Date/parse/not-a-constructor.js
new file mode 100644
index 0000000000..01551a621c
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/parse/not-a-constructor.js
@@ -0,0 +1,31 @@
+// Copyright (C) 2020 Rick Waldron. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-ecmascript-standard-built-in-objects
+description: >
+  Date.parse does not implement [[Construct]], is not new-able
+info: |
+  ECMAScript Function Objects
+
+  Built-in function objects that are not identified as constructors do not
+  implement the [[Construct]] internal method unless otherwise specified in
+  the description of a particular function.
+
+  sec-evaluatenew
+
+  ...
+  7. If IsConstructor(constructor) is false, throw a TypeError exception.
+  ...
+includes: [isConstructor.js]
+features: [Reflect.construct, arrow-function]
+---*/
+
+assert.sameValue(isConstructor(Date.parse), false, 'isConstructor(Date.parse) must return false');
+
+assert.throws(TypeError, () => {
+  new Date.parse();
+}, '`new Date.parse()` throws TypeError');
+
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/parse/shell.js b/js/src/tests/test262/built-ins/Date/parse/shell.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/parse/shell.js
diff --git a/js/src/tests/test262/built-ins/Date/parse/time-value-maximum-range.js b/js/src/tests/test262/built-ins/Date/parse/time-value-maximum-range.js
new file mode 100644
index 0000000000..9dffe30587
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/parse/time-value-maximum-range.js
@@ -0,0 +1,41 @@
+// Copyright (C) 2018 Andrew Paprocki. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.parse
+description: >
+  Date.parse return value is limited to specified time value maximum range
+info: |
+  Date.parse ( string )
+
+  parse interprets the resulting String as a date and time; it returns a
+  Number, the UTC time value corresponding to the date and time.
+
+  A Date object contains a Number indicating a particular instant in time to
+  within a millisecond. Such a Number is called a time value.
+
+  The actual range of times supported by ECMAScript Date objects is slightly
+  smaller: exactly -100,000,000 days to 100,000,000 days measured relative to
+  midnight at the beginning of 01 January, 1970 UTC. This gives a range of
+  8,640,000,000,000,000 milliseconds to either side of 01 January, 1970 UTC.
+---*/
+
+const minDateStr = "-271821-04-20T00:00:00.000Z";
+const minDate = new Date(-8640000000000000);
+
+assert.sameValue(minDate.toISOString(), minDateStr, "minDateStr");
+assert.sameValue(Date.parse(minDateStr), minDate.valueOf(), "parse minDateStr");
+
+const maxDateStr = "+275760-09-13T00:00:00.000Z";
+const maxDate = new Date(8640000000000000);
+
+assert.sameValue(maxDate.toISOString(), maxDateStr, "maxDateStr");
+assert.sameValue(Date.parse(maxDateStr), maxDate.valueOf(), "parse maxDateStr");
+
+const belowRange = "-271821-04-19T23:59:59.999Z";
+const aboveRange = "+275760-09-13T00:00:00.001Z";
+
+assert.sameValue(Date.parse(belowRange), NaN, "parse below minimum time value");
+assert.sameValue(Date.parse(aboveRange), NaN, "parse above maximum time value");
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/parse/without-utc-offset.js b/js/src/tests/test262/built-ins/Date/parse/without-utc-offset.js
new file mode 100644
index 0000000000..dbe0fbab7c
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/parse/without-utc-offset.js
@@ -0,0 +1,19 @@
+// Copyright (C) 2020 Sony Interactive Entertainment Inc. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.parse
+description: >
+  Offsetless date-time strings are local time, offsetless date-only strings are UTC time
+info: |
+  Date.parse ( string )
+
+  When the UTC offset representation is absent, date-only forms are interpreted
+  as a UTC time and date-time forms are interpreted as a local time.
+---*/
+
+const timezoneOffsetMS = new Date(0).getTimezoneOffset() * 60000;
+
+assert.sameValue(Date.parse('1970-01-01T00:00:00'), timezoneOffsetMS);
+assert.sameValue(Date.parse('1970-01-01'), 0);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/parse/year-zero.js b/js/src/tests/test262/built-ins/Date/parse/year-zero.js
new file mode 100644
index 0000000000..f04147e590
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/parse/year-zero.js
@@ -0,0 +1,22 @@
+// Copyright (C) 2022 Igalia, S.L. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-expanded-years
+description: Negative zero, as an extended year, is rejected
+info: |
+  The year 0 is considered positive and must be prefixed with a + sign. The
+  representation of the year 0 as -000000 is invalid.
+---*/
+
+const invalidStrings = [
+  "-000000-03-31T00:45Z",
+  "-000000-03-31T01:45",
+  "-000000-03-31T01:45:00+01:00"
+];
+
+for (const str of invalidStrings) {
+  assert.sameValue(Date.parse(str), NaN, "reject minus zero as extended year");
+}
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/parse/zero.js b/js/src/tests/test262/built-ins/Date/parse/zero.js
new file mode 100644
index 0000000000..5e7e7c0e87
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/parse/zero.js
@@ -0,0 +1,32 @@
+// Copyright (C) 2018 Andrew Paprocki. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.parse
+description: >
+  Date.parse of toString/toUTCString/toISOString of zero value is zero
+info: |
+  Date.parse ( string )
+
+  If x is any Date object whose milliseconds amount is zero within a
+  particular implementation of ECMAScript, then all of the following
+  expressions should produce the same numeric value in that
+  implementation, if all the properties referenced have their initial
+  values:
+
+  x.valueOf()
+  Date.parse(x.toString())
+  Date.parse(x.toUTCString())
+  Date.parse(x.toISOString())
+---*/
+
+const zero = new Date(0);
+
+assert.sameValue(zero.valueOf(), Date.parse(zero.toString()),
+                 "Date.parse(zeroDate.toString())");
+assert.sameValue(zero.valueOf(), Date.parse(zero.toUTCString()),
+                 "Date.parse(zeroDate.toUTCString())");
+assert.sameValue(zero.valueOf(), Date.parse(zero.toISOString()),
+                 "Date.parse(zeroDate.toISOString())");
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prop-desc.js b/js/src/tests/test262/built-ins/Date/prop-desc.js
new file mode 100644
index 0000000000..7666035e12
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prop-desc.js
@@ -0,0 +1,18 @@
+// Copyright (C) 2019 Bocoup. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-constructor-properties-of-the-global-object-date
+description: Property descriptor for Date
+info: |
+  Every other data property described in clauses 18 through 26 and in Annex B.2
+  has the attributes { [[Writable]]: true, [[Enumerable]]: false,
+  [[Configurable]]: true } unless otherwise specified.
+includes: [propertyHelper.js]
+---*/
+
+verifyNotEnumerable(this, "Date");
+verifyWritable(this, "Date");
+verifyConfigurable(this, "Date");
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/proto-from-ctor-realm-one.js b/js/src/tests/test262/built-ins/Date/proto-from-ctor-realm-one.js
new file mode 100644
index 0000000000..49cfd0c3a5
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/proto-from-ctor-realm-one.js
@@ -0,0 +1,33 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date-value
+description: Default [[Prototype]] value derived from realm of the newTarget
+info: |
+    [...]
+    3. If NewTarget is not undefined, then
+       [...]
+       c. Let O be ? OrdinaryCreateFromConstructor(NewTarget,
+          "%DatePrototype%", « [[DateValue]] »).
+    [...]
+
+    9.1.14 GetPrototypeFromConstructor
+
+    [...]
+    3. Let proto be ? Get(constructor, "prototype").
+    4. If Type(proto) is not Object, then
+       a. Let realm be ? GetFunctionRealm(constructor).
+       b. Let proto be realm's intrinsic object named intrinsicDefaultProto.
+    [...]
+features: [cross-realm, Reflect]
+---*/
+
+var other = $262.createRealm().global;
+var C = new other.Function();
+C.prototype = null;
+
+var o = Reflect.construct(Date, [0], C);
+
+assert.sameValue(Object.getPrototypeOf(o), other.Date.prototype);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/proto-from-ctor-realm-two.js b/js/src/tests/test262/built-ins/Date/proto-from-ctor-realm-two.js
new file mode 100644
index 0000000000..1db84ea5f8
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/proto-from-ctor-realm-two.js
@@ -0,0 +1,33 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date-year-month-date-hours-minutes-seconds-ms
+description: Default [[Prototype]] value derived from realm of the newTarget
+info: |
+    [...]
+    3. If NewTarget is not undefined, then
+       [...]
+       j. Let O be ? OrdinaryCreateFromConstructor(NewTarget,
+          "%DatePrototype%", « [[DateValue]] »).
+    [...]
+
+    9.1.14 GetPrototypeFromConstructor
+
+    [...]
+    3. Let proto be ? Get(constructor, "prototype").
+    4. If Type(proto) is not Object, then
+       a. Let realm be ? GetFunctionRealm(constructor).
+       b. Let proto be realm's intrinsic object named intrinsicDefaultProto.
+    [...]
+features: [cross-realm, Reflect]
+---*/
+
+var other = $262.createRealm().global;
+var C = new other.Function();
+C.prototype = null;
+
+var o = Reflect.construct(Date, [1970, 0], C);
+
+assert.sameValue(Object.getPrototypeOf(o), other.Date.prototype);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/proto-from-ctor-realm-zero.js b/js/src/tests/test262/built-ins/Date/proto-from-ctor-realm-zero.js
new file mode 100644
index 0000000000..9bf495fa90
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/proto-from-ctor-realm-zero.js
@@ -0,0 +1,32 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date-constructor-date
+description: Default [[Prototype]] value derived from realm of the newTarget
+info: |
+    [...]
+    3. If NewTarget is not undefined, then
+       a. Let O be ? OrdinaryCreateFromConstructor(NewTarget,
+          "%DatePrototype%", « [[DateValue]] »).
+    [...]
+
+    9.1.14 GetPrototypeFromConstructor
+
+    [...]
+    3. Let proto be ? Get(constructor, "prototype").
+    4. If Type(proto) is not Object, then
+       a. Let realm be ? GetFunctionRealm(constructor).
+       b. Let proto be realm's intrinsic object named intrinsicDefaultProto.
+    [...]
+features: [cross-realm, Reflect]
+---*/
+
+var other = $262.createRealm().global;
+var C = new other.Function();
+C.prototype = null;
+
+var o = Reflect.construct(Date, [], C);
+
+assert.sameValue(Object.getPrototypeOf(o), other.Date.prototype);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/S15.9.4.1_A1_T1.js b/js/src/tests/test262/built-ins/Date/prototype/S15.9.4.1_A1_T1.js
new file mode 100644
index 0000000000..20b8f72b64
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/S15.9.4.1_A1_T1.js
@@ -0,0 +1,19 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date property "prototype" has { DontEnum, DontDelete, ReadOnly }
+    attributes
+esid: sec-date.prototype
+description: Checking ReadOnly attribute
+includes: [propertyHelper.js]
+---*/
+
+var x = Date.prototype;
+verifyNotWritable(Date, "prototype", null, 1);
+assert.sameValue(Date.prototype, x, 'The value of Date.prototype is expected to equal the value of x');
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/S15.9.4.1_A1_T2.js b/js/src/tests/test262/built-ins/Date/prototype/S15.9.4.1_A1_T2.js
new file mode 100644
index 0000000000..8696fba7d6
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/S15.9.4.1_A1_T2.js
@@ -0,0 +1,30 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date property "prototype" has { DontEnum, DontDelete, ReadOnly }
+    attributes
+esid: sec-date.prototype
+description: Checking DontDelete attribute
+includes: [propertyHelper.js]
+---*/
+
+verifyNotConfigurable(Date, "prototype");
+
+try {
+  assert.sameValue(delete Date.prototype, false);
+} catch (e) {
+  if (e instanceof Test262Error) {
+    throw e;
+  }
+  assert(e instanceof TypeError);
+}
+
+if (!Date.hasOwnProperty('prototype')) {
+  throw new Test262Error('#2: The Date.prototype property has the attributes DontDelete');
+}
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/S15.9.4.1_A1_T3.js b/js/src/tests/test262/built-ins/Date/prototype/S15.9.4.1_A1_T3.js
new file mode 100644
index 0000000000..183ac600b4
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/S15.9.4.1_A1_T3.js
@@ -0,0 +1,22 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date property "prototype" has { DontEnum, DontDelete, ReadOnly }
+    attributes
+esid: sec-date.prototype
+description: Checking DontEnum attribute
+---*/
+assert(
+  !Date.propertyIsEnumerable('prototype'),
+  'The value of !Date.propertyIsEnumerable(\'prototype\') is expected to be true'
+);
+
+for (var x in Date) {
+  assert.notSameValue(x, "prototype", 'The value of x is not "prototype"');
+}
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A01_T1.js b/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A01_T1.js
new file mode 100644
index 0000000000..af08da6261
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A01_T1.js
@@ -0,0 +1,15 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype has the property "constructor"
+esid: sec-properties-of-the-date-prototype-object
+description: The Date.prototype has the property "constructor"
+---*/
+assert.sameValue(
+  Date.prototype.hasOwnProperty("constructor"),
+  true,
+  'Date.prototype.hasOwnProperty("constructor") must return true'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A02_T1.js b/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A02_T1.js
new file mode 100644
index 0000000000..e6ea7e46e3
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A02_T1.js
@@ -0,0 +1,15 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype has the property "toString"
+esid: sec-properties-of-the-date-prototype-object
+description: The Date.prototype has the property "toString"
+---*/
+assert.sameValue(
+  Date.prototype.hasOwnProperty("toString"),
+  true,
+  'Date.prototype.hasOwnProperty("toString") must return true'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A03_T1.js b/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A03_T1.js
new file mode 100644
index 0000000000..cefff13737
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A03_T1.js
@@ -0,0 +1,15 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype has the property "toDateString"
+esid: sec-properties-of-the-date-prototype-object
+description: The Date.prototype has the property "toDateString"
+---*/
+assert.sameValue(
+  Date.prototype.hasOwnProperty("toDateString"),
+  true,
+  'Date.prototype.hasOwnProperty("toDateString") must return true'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A04_T1.js b/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A04_T1.js
new file mode 100644
index 0000000000..49029ad9e6
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A04_T1.js
@@ -0,0 +1,15 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype has the property "toTimeString"
+esid: sec-properties-of-the-date-prototype-object
+description: The Date.prototype has the property "toTimeString"
+---*/
+assert.sameValue(
+  Date.prototype.hasOwnProperty("toTimeString"),
+  true,
+  'Date.prototype.hasOwnProperty("toTimeString") must return true'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A05_T1.js b/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A05_T1.js
new file mode 100644
index 0000000000..2085801083
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A05_T1.js
@@ -0,0 +1,15 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype has the property "toLocaleString"
+esid: sec-properties-of-the-date-prototype-object
+description: The Date.prototype has the property "toLocaleString"
+---*/
+assert.sameValue(
+  Date.prototype.hasOwnProperty("toLocaleString"),
+  true,
+  'Date.prototype.hasOwnProperty("toLocaleString") must return true'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A06_T1.js b/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A06_T1.js
new file mode 100644
index 0000000000..8717c97ea0
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A06_T1.js
@@ -0,0 +1,15 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype has the property "toLocaleDateString"
+esid: sec-properties-of-the-date-prototype-object
+description: The Date.prototype has the property "toLocaleDateString"
+---*/
+assert.sameValue(
+  Date.prototype.hasOwnProperty("toLocaleDateString"),
+  true,
+  'Date.prototype.hasOwnProperty("toLocaleDateString") must return true'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A07_T1.js b/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A07_T1.js
new file mode 100644
index 0000000000..551e01e16b
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A07_T1.js
@@ -0,0 +1,15 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype has the property "toLocaleTimeString"
+esid: sec-properties-of-the-date-prototype-object
+description: The Date.prototype has the property "toLocaleTimeString"
+---*/
+assert.sameValue(
+  Date.prototype.hasOwnProperty("toLocaleTimeString"),
+  true,
+  'Date.prototype.hasOwnProperty("toLocaleTimeString") must return true'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A08_T1.js b/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A08_T1.js
new file mode 100644
index 0000000000..cb06300033
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A08_T1.js
@@ -0,0 +1,15 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype has the property "valueOf"
+esid: sec-properties-of-the-date-prototype-object
+description: The Date.prototype has the property "valueOf"
+---*/
+assert.sameValue(
+  Date.prototype.hasOwnProperty("valueOf"),
+  true,
+  'Date.prototype.hasOwnProperty("valueOf") must return true'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A09_T1.js b/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A09_T1.js
new file mode 100644
index 0000000000..9e5f937095
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A09_T1.js
@@ -0,0 +1,15 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype has the property "getTime"
+esid: sec-properties-of-the-date-prototype-object
+description: The Date.prototype has the property "getTime"
+---*/
+assert.sameValue(
+  Date.prototype.hasOwnProperty("getTime"),
+  true,
+  'Date.prototype.hasOwnProperty("getTime") must return true'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A10_T1.js b/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A10_T1.js
new file mode 100644
index 0000000000..aab91858d3
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A10_T1.js
@@ -0,0 +1,15 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype has the property "getFullYear"
+esid: sec-properties-of-the-date-prototype-object
+description: The Date.prototype has the property "getFullYear"
+---*/
+assert.sameValue(
+  Date.prototype.hasOwnProperty("getFullYear"),
+  true,
+  'Date.prototype.hasOwnProperty("getFullYear") must return true'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A11_T1.js b/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A11_T1.js
new file mode 100644
index 0000000000..163b509df8
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A11_T1.js
@@ -0,0 +1,15 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype has the property "getUTCFullYear"
+esid: sec-properties-of-the-date-prototype-object
+description: The Date.prototype has the property "getUTCFullYear"
+---*/
+assert.sameValue(
+  Date.prototype.hasOwnProperty("getUTCFullYear"),
+  true,
+  'Date.prototype.hasOwnProperty("getUTCFullYear") must return true'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A12_T1.js b/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A12_T1.js
new file mode 100644
index 0000000000..20bd6222e1
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A12_T1.js
@@ -0,0 +1,15 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype has the property "getMonth"
+esid: sec-properties-of-the-date-prototype-object
+description: The Date.prototype has the property "getMonth"
+---*/
+assert.sameValue(
+  Date.prototype.hasOwnProperty("getMonth"),
+  true,
+  'Date.prototype.hasOwnProperty("getMonth") must return true'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A13_T1.js b/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A13_T1.js
new file mode 100644
index 0000000000..4eb1769699
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A13_T1.js
@@ -0,0 +1,15 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype has the property "getUTCMonth"
+esid: sec-properties-of-the-date-prototype-object
+description: The Date.prototype has the property "getUTCMonth"
+---*/
+assert.sameValue(
+  Date.prototype.hasOwnProperty("getUTCMonth"),
+  true,
+  'Date.prototype.hasOwnProperty("getUTCMonth") must return true'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A14_T1.js b/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A14_T1.js
new file mode 100644
index 0000000000..3bb94bbc71
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A14_T1.js
@@ -0,0 +1,15 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype has the property "getDate"
+esid: sec-properties-of-the-date-prototype-object
+description: The Date.prototype has the property "getDate"
+---*/
+assert.sameValue(
+  Date.prototype.hasOwnProperty("getDate"),
+  true,
+  'Date.prototype.hasOwnProperty("getDate") must return true'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A15_T1.js b/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A15_T1.js
new file mode 100644
index 0000000000..3a4e4c2adc
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A15_T1.js
@@ -0,0 +1,15 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype has the property "getUTCDate"
+esid: sec-properties-of-the-date-prototype-object
+description: The Date.prototype has the property "getUTCDate"
+---*/
+assert.sameValue(
+  Date.prototype.hasOwnProperty("getUTCDate"),
+  true,
+  'Date.prototype.hasOwnProperty("getUTCDate") must return true'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A16_T1.js b/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A16_T1.js
new file mode 100644
index 0000000000..7f9de5c682
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A16_T1.js
@@ -0,0 +1,15 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype has the property "getDay"
+esid: sec-properties-of-the-date-prototype-object
+description: The Date.prototype has the property "getDay"
+---*/
+assert.sameValue(
+  Date.prototype.hasOwnProperty("getDay"),
+  true,
+  'Date.prototype.hasOwnProperty("getDay") must return true'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A17_T1.js b/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A17_T1.js
new file mode 100644
index 0000000000..e1ddb8d672
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A17_T1.js
@@ -0,0 +1,15 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype has the property "getUTCDay"
+esid: sec-properties-of-the-date-prototype-object
+description: The Date.prototype has the property "getUTCDay"
+---*/
+assert.sameValue(
+  Date.prototype.hasOwnProperty("getUTCDay"),
+  true,
+  'Date.prototype.hasOwnProperty("getUTCDay") must return true'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A18_T1.js b/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A18_T1.js
new file mode 100644
index 0000000000..be23a2dd36
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A18_T1.js
@@ -0,0 +1,15 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype has the property "getHours"
+esid: sec-properties-of-the-date-prototype-object
+description: The Date.prototype has the property "getHours"
+---*/
+assert.sameValue(
+  Date.prototype.hasOwnProperty("getHours"),
+  true,
+  'Date.prototype.hasOwnProperty("getHours") must return true'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A19_T1.js b/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A19_T1.js
new file mode 100644
index 0000000000..27d9c68a18
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A19_T1.js
@@ -0,0 +1,15 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype has the property "getUTCHours"
+esid: sec-properties-of-the-date-prototype-object
+description: The Date.prototype has the property "getUTCHours"
+---*/
+assert.sameValue(
+  Date.prototype.hasOwnProperty("getUTCHours"),
+  true,
+  'Date.prototype.hasOwnProperty("getUTCHours") must return true'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A20_T1.js b/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A20_T1.js
new file mode 100644
index 0000000000..43a9ac8f1c
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A20_T1.js
@@ -0,0 +1,15 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype has the property "getMinutes"
+esid: sec-properties-of-the-date-prototype-object
+description: The Date.prototype has the property "getMinutes"
+---*/
+assert.sameValue(
+  Date.prototype.hasOwnProperty("getMinutes"),
+  true,
+  'Date.prototype.hasOwnProperty("getMinutes") must return true'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A21_T1.js b/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A21_T1.js
new file mode 100644
index 0000000000..eeee6d1b0e
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A21_T1.js
@@ -0,0 +1,15 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype has the property "getUTCMinutes"
+esid: sec-properties-of-the-date-prototype-object
+description: The Date.prototype has the property "getUTCMinutes"
+---*/
+assert.sameValue(
+  Date.prototype.hasOwnProperty("getUTCMinutes"),
+  true,
+  'Date.prototype.hasOwnProperty("getUTCMinutes") must return true'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A22_T1.js b/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A22_T1.js
new file mode 100644
index 0000000000..433e6f9cce
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A22_T1.js
@@ -0,0 +1,15 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype has the property "getSeconds"
+esid: sec-properties-of-the-date-prototype-object
+description: The Date.prototype has the property "getSeconds"
+---*/
+assert.sameValue(
+  Date.prototype.hasOwnProperty("getSeconds"),
+  true,
+  'Date.prototype.hasOwnProperty("getSeconds") must return true'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A23_T1.js b/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A23_T1.js
new file mode 100644
index 0000000000..c8810bc298
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A23_T1.js
@@ -0,0 +1,15 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype has the property "getUTCSeconds"
+esid: sec-properties-of-the-date-prototype-object
+description: The Date.prototype has the property "getUTCSeconds"
+---*/
+assert.sameValue(
+  Date.prototype.hasOwnProperty("getUTCSeconds"),
+  true,
+  'Date.prototype.hasOwnProperty("getUTCSeconds") must return true'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A24_T1.js b/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A24_T1.js
new file mode 100644
index 0000000000..c11983d1d7
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A24_T1.js
@@ -0,0 +1,15 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype has the property "getMilliseconds"
+esid: sec-properties-of-the-date-prototype-object
+description: The Date.prototype has the property "getMilliseconds"
+---*/
+assert.sameValue(
+  Date.prototype.hasOwnProperty("getMilliseconds"),
+  true,
+  'Date.prototype.hasOwnProperty("getMilliseconds") must return true'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A25_T1.js b/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A25_T1.js
new file mode 100644
index 0000000000..10aa185fd5
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A25_T1.js
@@ -0,0 +1,15 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype has the property "getUTCMilliseconds"
+esid: sec-properties-of-the-date-prototype-object
+description: The Date.prototype has the property "getUTCMilliseconds"
+---*/
+assert.sameValue(
+  Date.prototype.hasOwnProperty("getUTCMilliseconds"),
+  true,
+  'Date.prototype.hasOwnProperty("getUTCMilliseconds") must return true'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A26_T1.js b/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A26_T1.js
new file mode 100644
index 0000000000..a7ff1e0f98
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A26_T1.js
@@ -0,0 +1,15 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype has the property "getTimezoneOffset"
+esid: sec-properties-of-the-date-prototype-object
+description: The Date.prototype has the property "getTimezoneOffset"
+---*/
+assert.sameValue(
+  Date.prototype.hasOwnProperty("getTimezoneOffset"),
+  true,
+  'Date.prototype.hasOwnProperty("getTimezoneOffset") must return true'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A27_T1.js b/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A27_T1.js
new file mode 100644
index 0000000000..2178c458a3
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A27_T1.js
@@ -0,0 +1,15 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype has the property "setTime"
+esid: sec-properties-of-the-date-prototype-object
+description: The Date.prototype has the property "setTime"
+---*/
+assert.sameValue(
+  Date.prototype.hasOwnProperty("setTime"),
+  true,
+  'Date.prototype.hasOwnProperty("setTime") must return true'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A28_T1.js b/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A28_T1.js
new file mode 100644
index 0000000000..9d17f88883
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A28_T1.js
@@ -0,0 +1,15 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype has the property "setMilliseconds"
+esid: sec-properties-of-the-date-prototype-object
+description: The Date.prototype has the property "setMilliseconds"
+---*/
+assert.sameValue(
+  Date.prototype.hasOwnProperty("setMilliseconds"),
+  true,
+  'Date.prototype.hasOwnProperty("setMilliseconds") must return true'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A29_T1.js b/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A29_T1.js
new file mode 100644
index 0000000000..22c323c249
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A29_T1.js
@@ -0,0 +1,15 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype has the property "setUTCMilliseconds"
+esid: sec-properties-of-the-date-prototype-object
+description: The Date.prototype has the property "setUTCMilliseconds"
+---*/
+assert.sameValue(
+  Date.prototype.hasOwnProperty("setUTCMilliseconds"),
+  true,
+  'Date.prototype.hasOwnProperty("setUTCMilliseconds") must return true'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A30_T1.js b/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A30_T1.js
new file mode 100644
index 0000000000..5d1de66b74
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A30_T1.js
@@ -0,0 +1,15 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype has the property "setSeconds"
+esid: sec-properties-of-the-date-prototype-object
+description: The Date.prototype has the property "setSeconds"
+---*/
+assert.sameValue(
+  Date.prototype.hasOwnProperty("setSeconds"),
+  true,
+  'Date.prototype.hasOwnProperty("setSeconds") must return true'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A31_T1.js b/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A31_T1.js
new file mode 100644
index 0000000000..aab6a583cf
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A31_T1.js
@@ -0,0 +1,15 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype has the property "setUTCSeconds"
+esid: sec-properties-of-the-date-prototype-object
+description: The Date.prototype has the property "setUTCSeconds"
+---*/
+assert.sameValue(
+  Date.prototype.hasOwnProperty("setUTCSeconds"),
+  true,
+  'Date.prototype.hasOwnProperty("setUTCSeconds") must return true'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A32_T1.js b/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A32_T1.js
new file mode 100644
index 0000000000..9ab447571d
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A32_T1.js
@@ -0,0 +1,15 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype has the property "setMinutes"
+esid: sec-properties-of-the-date-prototype-object
+description: The Date.prototype has the property "setMinutes"
+---*/
+assert.sameValue(
+  Date.prototype.hasOwnProperty("setMinutes"),
+  true,
+  'Date.prototype.hasOwnProperty("setMinutes") must return true'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A33_T1.js b/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A33_T1.js
new file mode 100644
index 0000000000..6730e51d09
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A33_T1.js
@@ -0,0 +1,15 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype has the property "setUTCMinutes"
+esid: sec-properties-of-the-date-prototype-object
+description: The Date.prototype has the property "setUTCMinutes"
+---*/
+assert.sameValue(
+  Date.prototype.hasOwnProperty("setUTCMinutes"),
+  true,
+  'Date.prototype.hasOwnProperty("setUTCMinutes") must return true'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A34_T1.js b/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A34_T1.js
new file mode 100644
index 0000000000..5c87f3aa67
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A34_T1.js
@@ -0,0 +1,15 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype has the property "setHours"
+esid: sec-properties-of-the-date-prototype-object
+description: The Date.prototype has the property "setHours"
+---*/
+assert.sameValue(
+  Date.prototype.hasOwnProperty("setHours"),
+  true,
+  'Date.prototype.hasOwnProperty("setHours") must return true'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A35_T1.js b/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A35_T1.js
new file mode 100644
index 0000000000..b190a80491
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A35_T1.js
@@ -0,0 +1,15 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype has the property "setUTCHours"
+esid: sec-properties-of-the-date-prototype-object
+description: The Date.prototype has the property "setUTCHours"
+---*/
+assert.sameValue(
+  Date.prototype.hasOwnProperty("setUTCHours"),
+  true,
+  'Date.prototype.hasOwnProperty("setUTCHours") must return true'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A36_T1.js b/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A36_T1.js
new file mode 100644
index 0000000000..5ace73d7d0
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A36_T1.js
@@ -0,0 +1,15 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype has the property "setDate"
+esid: sec-properties-of-the-date-prototype-object
+description: The Date.prototype has the property "setDate"
+---*/
+assert.sameValue(
+  Date.prototype.hasOwnProperty("setDate"),
+  true,
+  'Date.prototype.hasOwnProperty("setDate") must return true'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A37_T1.js b/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A37_T1.js
new file mode 100644
index 0000000000..5185a5bf46
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A37_T1.js
@@ -0,0 +1,15 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype has the property "setUTCDate"
+esid: sec-properties-of-the-date-prototype-object
+description: The Date.prototype has the property "setUTCDate"
+---*/
+assert.sameValue(
+  Date.prototype.hasOwnProperty("setUTCDate"),
+  true,
+  'Date.prototype.hasOwnProperty("setUTCDate") must return true'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A38_T1.js b/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A38_T1.js
new file mode 100644
index 0000000000..2adb512ccf
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A38_T1.js
@@ -0,0 +1,15 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype has the property "setMonth"
+esid: sec-properties-of-the-date-prototype-object
+description: The Date.prototype has the property "setMonth"
+---*/
+assert.sameValue(
+  Date.prototype.hasOwnProperty("setMonth"),
+  true,
+  'Date.prototype.hasOwnProperty("setMonth") must return true'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A39_T1.js b/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A39_T1.js
new file mode 100644
index 0000000000..f2d7f80bc3
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A39_T1.js
@@ -0,0 +1,15 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype has the property "setUTCMonth"
+esid: sec-properties-of-the-date-prototype-object
+description: The Date.prototype has the property "setUTCMonth"
+---*/
+assert.sameValue(
+  Date.prototype.hasOwnProperty("setUTCMonth"),
+  true,
+  'Date.prototype.hasOwnProperty("setUTCMonth") must return true'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A40_T1.js b/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A40_T1.js
new file mode 100644
index 0000000000..d449d232ae
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A40_T1.js
@@ -0,0 +1,15 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype has the property "setFullYear"
+esid: sec-properties-of-the-date-prototype-object
+description: The Date.prototype has the property "setFullYear"
+---*/
+assert.sameValue(
+  Date.prototype.hasOwnProperty("setFullYear"),
+  true,
+  'Date.prototype.hasOwnProperty("setFullYear") must return true'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A41_T1.js b/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A41_T1.js
new file mode 100644
index 0000000000..d2178a8f2f
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A41_T1.js
@@ -0,0 +1,15 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype has the property "setUTCFullYear"
+esid: sec-properties-of-the-date-prototype-object
+description: The Date.prototype has the property "setUTCFullYear"
+---*/
+assert.sameValue(
+  Date.prototype.hasOwnProperty("setUTCFullYear"),
+  true,
+  'Date.prototype.hasOwnProperty("setUTCFullYear") must return true'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A42_T1.js b/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A42_T1.js
new file mode 100644
index 0000000000..498c326b71
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/S15.9.5_A42_T1.js
@@ -0,0 +1,15 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype has the property "toUTCString"
+esid: sec-properties-of-the-date-prototype-object
+description: The Date.prototype has the property "toUTCString"
+---*/
+assert.sameValue(
+  Date.prototype.hasOwnProperty("toUTCString"),
+  true,
+  'Date.prototype.hasOwnProperty("toUTCString") must return true'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/Symbol.toPrimitive/browser.js b/js/src/tests/test262/built-ins/Date/prototype/Symbol.toPrimitive/browser.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/Symbol.toPrimitive/browser.js
diff --git a/js/src/tests/test262/built-ins/Date/prototype/Symbol.toPrimitive/called-as-function.js b/js/src/tests/test262/built-ins/Date/prototype/Symbol.toPrimitive/called-as-function.js
new file mode 100644
index 0000000000..fcdf27ee65
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/Symbol.toPrimitive/called-as-function.js
@@ -0,0 +1,35 @@
+// Copyright (C) 2020 Alexey Shvayka. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.prototype-@@toprimitive
+description: >
+    `this` value is resolved using strict mode semantics,
+    throwing TypeError if called as top-level function.
+info: |
+    Date.prototype [ @@toPrimitive ] ( hint )
+
+    1. Let O be the this value.
+    2. If Type(O) is not Object, throw a TypeError exception.
+
+    ToObject ( argument )
+
+    Argument Type: Undefined
+    Result: Throw a TypeError exception.
+features: [Symbol, Symbol.toPrimitive]
+---*/
+
+["toString", "valueOf"].forEach(function(key) {
+    Object.defineProperty(this, key, {
+        get: function() {
+            throw new Test262Error(key + " lookup should not be performed");
+        },
+    });
+}, this);
+
+var toPrimitive = Date.prototype[Symbol.toPrimitive];
+assert.throws(TypeError, function() {
+    toPrimitive("default");
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/Symbol.toPrimitive/hint-default-first-invalid.js b/js/src/tests/test262/built-ins/Date/prototype/Symbol.toPrimitive/hint-default-first-invalid.js
new file mode 100644
index 0000000000..5d17cdd87d
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/Symbol.toPrimitive/hint-default-first-invalid.js
@@ -0,0 +1,40 @@
+// Copyright (C) 2015 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype-@@toprimitive
+description: >
+    Behavior when `hint` is "default" and first try returns an invalid value
+info: |
+    1. Let O be the this value.
+    2. If Type(O) is not Object, throw a TypeError exception.
+    3. If hint is the String value "string" or the String value "default", then
+       a. Let tryFirst be "string".
+    4. Else if hint is the String value "number", then
+       a. Let tryFirst be "number".
+    5. Else, throw a TypeError exception.
+    6. Return OrdinaryToPrimitive(O, tryFirst).
+features: [Symbol.toPrimitive]
+---*/
+
+var voCallCount = 0;
+var tsCallCount = 0;
+var obj = {
+  valueOf: function() {
+    voCallCount += 1;
+    return 'valueOf test262';
+  },
+  toString: function() {
+    tsCallCount += 1;
+    return {};
+  }
+};
+
+assert.sameValue(
+  Date.prototype[Symbol.toPrimitive].call(obj, 'default'),
+  'valueOf test262',
+  '`valueOf` is used as a fallback when `toString` returns an object'
+);
+assert.sameValue(voCallCount, 1, '`valueOf` method was invoked exactly once');
+assert.sameValue(tsCallCount, 1, '`toString` method was invoked exactly once');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/Symbol.toPrimitive/hint-default-first-non-callable.js b/js/src/tests/test262/built-ins/Date/prototype/Symbol.toPrimitive/hint-default-first-non-callable.js
new file mode 100644
index 0000000000..16a7430b84
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/Symbol.toPrimitive/hint-default-first-non-callable.js
@@ -0,0 +1,35 @@
+// Copyright (C) 2015 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype-@@toprimitive
+description: >
+    Behavior when `hint` is "default" and first try is not callable
+info: |
+    1. Let O be the this value.
+    2. If Type(O) is not Object, throw a TypeError exception.
+    3. If hint is the String value "string" or the String value "default", then
+       a. Let tryFirst be "string".
+    4. Else if hint is the String value "number", then
+       a. Let tryFirst be "number".
+    5. Else, throw a TypeError exception.
+    6. Return OrdinaryToPrimitive(O, tryFirst).
+features: [Symbol.toPrimitive]
+---*/
+
+var voCallCount = 0;
+var obj = {
+  valueOf: function() {
+    voCallCount += 1;
+    return 'valueOf test262';
+  },
+  toString: null
+};
+
+assert.sameValue(
+  Date.prototype[Symbol.toPrimitive].call(obj, 'default'),
+  'valueOf test262',
+  '`valueOf` is used as a fallback when `toString` is not callable'
+);
+assert.sameValue(voCallCount, 1, '`valueOf` method was invoked exactly once');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/Symbol.toPrimitive/hint-default-first-valid.js b/js/src/tests/test262/built-ins/Date/prototype/Symbol.toPrimitive/hint-default-first-valid.js
new file mode 100644
index 0000000000..3512ecb52d
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/Symbol.toPrimitive/hint-default-first-valid.js
@@ -0,0 +1,38 @@
+// Copyright (C) 2015 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype-@@toprimitive
+description: >
+    Behavior when `hint` is "default" and first try returns a valid value
+info: |
+    1. Let O be the this value.
+    2. If Type(O) is not Object, throw a TypeError exception.
+    3. If hint is the String value "string" or the String value "default", then
+       a. Let tryFirst be "string".
+    4. Else if hint is the String value "number", then
+       a. Let tryFirst be "number".
+    5. Else, throw a TypeError exception.
+    6. Return OrdinaryToPrimitive(O, tryFirst).
+features: [Symbol.toPrimitive]
+---*/
+
+var voAccessCount = 0;
+var tsCallCount = 0;;
+var obj = {
+  get valueOf() {
+    voAccessCount += 1;
+  },
+  toString: function() {
+    tsCallCount += 1;
+    return 'toString test262';
+  }
+};
+
+assert.sameValue(
+  Date.prototype[Symbol.toPrimitive].call(obj, 'default'),
+  'toString test262'
+);
+assert.sameValue(voAccessCount, 0, '`valueOf` method was not referenced');
+assert.sameValue(tsCallCount, 1, '`toString` method was invoked exactly once');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/Symbol.toPrimitive/hint-default-no-callables.js b/js/src/tests/test262/built-ins/Date/prototype/Symbol.toPrimitive/hint-default-no-callables.js
new file mode 100644
index 0000000000..7950211228
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/Symbol.toPrimitive/hint-default-no-callables.js
@@ -0,0 +1,28 @@
+// Copyright (C) 2015 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype-@@toprimitive
+description: >
+    Behavior when `hint` is "default" and neither first nor second try are callable.
+info: |
+    1. Let O be the this value.
+    2. If Type(O) is not Object, throw a TypeError exception.
+    3. If hint is the String value "string" or the String value "default", then
+       a. Let tryFirst be "string".
+    4. Else if hint is the String value "number", then
+       a. Let tryFirst be "number".
+    5. Else, throw a TypeError exception.
+    6. Return OrdinaryToPrimitive(O, tryFirst).
+features: [Symbol.toPrimitive]
+---*/
+
+var obj = {
+  valueOf: null,
+  toString: null
+};
+
+assert.throws(TypeError, function() {
+  Date.prototype[Symbol.toPrimitive].call(obj, 'default');
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/Symbol.toPrimitive/hint-invalid.js b/js/src/tests/test262/built-ins/Date/prototype/Symbol.toPrimitive/hint-invalid.js
new file mode 100644
index 0000000000..243a4ef206
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/Symbol.toPrimitive/hint-invalid.js
@@ -0,0 +1,57 @@
+// Copyright (C) 2015 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype-@@toprimitive
+description: Behavior when an invalid `hint` argument is specified
+info: |
+    1. Let O be the this value.
+    2. If Type(O) is not Object, throw a TypeError exception.
+    3. If hint is the String value "string" or the String value "default", then
+       a. Let tryFirst be "string".
+    4. Else if hint is the String value "number", then
+       a. Let tryFirst be "number".
+    5. Else, throw a TypeError exception.
+features: [Symbol.toPrimitive]
+---*/
+
+var d = new Date();
+
+assert.sameValue(typeof d[Symbol.toPrimitive], 'function');
+
+assert.throws(TypeError, function() {
+  d[Symbol.toPrimitive]();
+});
+
+assert.throws(TypeError, function() {
+  d[Symbol.toPrimitive](undefined);
+});
+
+assert.throws(TypeError, function() {
+  d[Symbol.toPrimitive](null);
+});
+
+assert.throws(TypeError, function() {
+  d[Symbol.toPrimitive]('');
+});
+
+assert.throws(TypeError, function() {
+  d[Symbol.toPrimitive]('String');
+});
+
+assert.throws(TypeError, function() {
+  d[Symbol.toPrimitive]('defaultnumber');
+});
+
+assert.throws(TypeError, function() {
+  d[Symbol.toPrimitive](new String('number'));
+});
+
+assert.throws(TypeError, function() {
+  d[Symbol.toPrimitive]({
+    toString: function() {
+      'number';
+    }
+  });
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/Symbol.toPrimitive/hint-number-first-invalid.js b/js/src/tests/test262/built-ins/Date/prototype/Symbol.toPrimitive/hint-number-first-invalid.js
new file mode 100644
index 0000000000..d151a2cbec
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/Symbol.toPrimitive/hint-number-first-invalid.js
@@ -0,0 +1,40 @@
+// Copyright (C) 2015 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype-@@toprimitive
+description: >
+    Behavior when `hint` is "number" and first try returns an invalid value
+info: |
+    1. Let O be the this value.
+    2. If Type(O) is not Object, throw a TypeError exception.
+    3. If hint is the String value "string" or the String value "default", then
+       a. Let tryFirst be "string".
+    4. Else if hint is the String value "number", then
+       a. Let tryFirst be "number".
+    5. Else, throw a TypeError exception.
+    6. Return OrdinaryToPrimitive(O, tryFirst).
+features: [Symbol.toPrimitive]
+---*/
+
+var voCallCount = 0;
+var tsCallCount = 0;
+var obj = {
+  valueOf: function() {
+    voCallCount += 1;
+    return {};
+  },
+  toString: function() {
+    tsCallCount += 1;
+    return 'toString test262';
+  }
+};
+
+assert.sameValue(
+  Date.prototype[Symbol.toPrimitive].call(obj, 'number'),
+  'toString test262',
+  '`toString` is used as a fallback when `valueOf` returns an object'
+);
+assert.sameValue(voCallCount, 1, '`valueOf` method was invoked exactly once');
+assert.sameValue(tsCallCount, 1, '`toString` method was invoked exactly once');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/Symbol.toPrimitive/hint-number-first-non-callable.js b/js/src/tests/test262/built-ins/Date/prototype/Symbol.toPrimitive/hint-number-first-non-callable.js
new file mode 100644
index 0000000000..a4071061e5
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/Symbol.toPrimitive/hint-number-first-non-callable.js
@@ -0,0 +1,35 @@
+// Copyright (C) 2015 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype-@@toprimitive
+description: >
+    Behavior when `hint` is "number" and first try is not callable
+info: |
+    1. Let O be the this value.
+    2. If Type(O) is not Object, throw a TypeError exception.
+    3. If hint is the String value "string" or the String value "default", then
+       a. Let tryFirst be "string".
+    4. Else if hint is the String value "number", then
+       a. Let tryFirst be "number".
+    5. Else, throw a TypeError exception.
+    6. Return OrdinaryToPrimitive(O, tryFirst).
+features: [Symbol.toPrimitive]
+---*/
+
+var tsCallCount = 0;
+var obj = {
+  valueOf: null,
+  toString: function() {
+    tsCallCount += 1;
+    return 'toString test262';
+  }
+};
+
+assert.sameValue(
+  Date.prototype[Symbol.toPrimitive].call(obj, 'number'),
+  'toString test262',
+  '`toString` is used as a fallback when `valueOf` is not callable'
+);
+assert.sameValue(tsCallCount, 1, '`toString` method was invoked exactly once');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/Symbol.toPrimitive/hint-number-first-valid.js b/js/src/tests/test262/built-ins/Date/prototype/Symbol.toPrimitive/hint-number-first-valid.js
new file mode 100644
index 0000000000..249e9e5bf9
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/Symbol.toPrimitive/hint-number-first-valid.js
@@ -0,0 +1,38 @@
+// Copyright (C) 2015 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype-@@toprimitive
+description: >
+    Behavior when `hint` is "number" and first try returns a valid value
+info: |
+    1. Let O be the this value.
+    2. If Type(O) is not Object, throw a TypeError exception.
+    3. If hint is the String value "string" or the String value "default", then
+       a. Let tryFirst be "string".
+    4. Else if hint is the String value "number", then
+       a. Let tryFirst be "number".
+    5. Else, throw a TypeError exception.
+    6. Return OrdinaryToPrimitive(O, tryFirst).
+features: [Symbol.toPrimitive]
+---*/
+
+var voCallCount = 0;
+var tsAccessCount = 0;
+var obj = {
+  valueOf: function() {
+    voCallCount += 1;
+    return 'valueOf test262';
+  },
+  get toString() {
+    tsAccessCount += 1;
+  }
+};
+
+assert.sameValue(
+  Date.prototype[Symbol.toPrimitive].call(obj, 'number'),
+  'valueOf test262'
+);
+assert.sameValue(voCallCount, 1, '`valueOf` method was invoked exactly once');
+assert.sameValue(tsAccessCount, 0, '`toString` method was not referenced');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/Symbol.toPrimitive/hint-number-no-callables.js b/js/src/tests/test262/built-ins/Date/prototype/Symbol.toPrimitive/hint-number-no-callables.js
new file mode 100644
index 0000000000..c2eaba27ed
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/Symbol.toPrimitive/hint-number-no-callables.js
@@ -0,0 +1,28 @@
+// Copyright (C) 2015 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype-@@toprimitive
+description: >
+    Behavior when `hint` is "number" and neither first nor second try are callable.
+info: |
+    1. Let O be the this value.
+    2. If Type(O) is not Object, throw a TypeError exception.
+    3. If hint is the String value "string" or the String value "default", then
+       a. Let tryFirst be "string".
+    4. Else if hint is the String value "number", then
+       a. Let tryFirst be "number".
+    5. Else, throw a TypeError exception.
+    6. Return OrdinaryToPrimitive(O, tryFirst).
+features: [Symbol.toPrimitive]
+---*/
+
+var obj = {
+  valueOf: null,
+  toString: null
+};
+
+assert.throws(TypeError, function() {
+  Date.prototype[Symbol.toPrimitive].call(obj, 'number');
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/Symbol.toPrimitive/hint-string-first-invalid.js b/js/src/tests/test262/built-ins/Date/prototype/Symbol.toPrimitive/hint-string-first-invalid.js
new file mode 100644
index 0000000000..714410b032
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/Symbol.toPrimitive/hint-string-first-invalid.js
@@ -0,0 +1,40 @@
+// Copyright (C) 2015 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype-@@toprimitive
+description: >
+    Behavior when `hint` is "string" and first try returns an invalid value
+info: |
+    1. Let O be the this value.
+    2. If Type(O) is not Object, throw a TypeError exception.
+    3. If hint is the String value "string" or the String value "default", then
+       a. Let tryFirst be "string".
+    4. Else if hint is the String value "number", then
+       a. Let tryFirst be "number".
+    5. Else, throw a TypeError exception.
+    6. Return OrdinaryToPrimitive(O, tryFirst).
+features: [Symbol.toPrimitive]
+---*/
+
+var voCallCount = 0;
+var tsCallCount = 0;
+var obj = {
+  valueOf: function() {
+    voCallCount += 1;
+    return 'valueOf test262';
+  },
+  toString: function() {
+    tsCallCount += 1;
+    return {};
+  }
+};
+
+assert.sameValue(
+  Date.prototype[Symbol.toPrimitive].call(obj, 'string'),
+  'valueOf test262',
+  '`valueOf` is used as a fallback when `toString` returns an object'
+);
+assert.sameValue(voCallCount, 1, '`valueOf` method was invoked exactly once');
+assert.sameValue(tsCallCount, 1, '`toString` method was invoked exactly once');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/Symbol.toPrimitive/hint-string-first-non-callable.js b/js/src/tests/test262/built-ins/Date/prototype/Symbol.toPrimitive/hint-string-first-non-callable.js
new file mode 100644
index 0000000000..2619af0be7
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/Symbol.toPrimitive/hint-string-first-non-callable.js
@@ -0,0 +1,35 @@
+// Copyright (C) 2015 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype-@@toprimitive
+description: >
+    Behavior when `hint` is "string" and first try is not callable
+info: |
+    1. Let O be the this value.
+    2. If Type(O) is not Object, throw a TypeError exception.
+    3. If hint is the String value "string" or the String value "default", then
+       a. Let tryFirst be "string".
+    4. Else if hint is the String value "number", then
+       a. Let tryFirst be "number".
+    5. Else, throw a TypeError exception.
+    6. Return OrdinaryToPrimitive(O, tryFirst).
+features: [Symbol.toPrimitive]
+---*/
+
+var voCallCount = 0;
+var obj = {
+  valueOf: function() {
+    voCallCount += 1;
+    return 'valueOf test262';
+  },
+  toString: null
+};
+
+assert.sameValue(
+  Date.prototype[Symbol.toPrimitive].call(obj, 'string'),
+  'valueOf test262',
+  '`valueOf` is used as a fallback when `toString` is not callable'
+);
+assert.sameValue(voCallCount, 1, '`valueOf` method was invoked exactly once');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/Symbol.toPrimitive/hint-string-first-valid.js b/js/src/tests/test262/built-ins/Date/prototype/Symbol.toPrimitive/hint-string-first-valid.js
new file mode 100644
index 0000000000..dee4c72897
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/Symbol.toPrimitive/hint-string-first-valid.js
@@ -0,0 +1,38 @@
+// Copyright (C) 2015 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype-@@toprimitive
+description: >
+    Behavior when `hint` is "string" and first try returns a valid value
+info: |
+    1. Let O be the this value.
+    2. If Type(O) is not Object, throw a TypeError exception.
+    3. If hint is the String value "string" or the String value "default", then
+       a. Let tryFirst be "string".
+    4. Else if hint is the String value "number", then
+       a. Let tryFirst be "number".
+    5. Else, throw a TypeError exception.
+    6. Return OrdinaryToPrimitive(O, tryFirst).
+features: [Symbol.toPrimitive]
+---*/
+
+var voAccessCount = 0;
+var tsCallCount = 0;
+var obj = {
+  get valueOf() {
+    voAccessCount += 1;
+  },
+  toString: function() {
+    tsCallCount += 1;
+    return 'toString test262';
+  }
+};
+
+assert.sameValue(
+  Date.prototype[Symbol.toPrimitive].call(obj, 'string'),
+  'toString test262'
+);
+assert.sameValue(voAccessCount, 0, '`valueOf` method was not referenced');
+assert.sameValue(tsCallCount, 1, '`toString` method was invoked exactly once');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/Symbol.toPrimitive/hint-string-no-callables.js b/js/src/tests/test262/built-ins/Date/prototype/Symbol.toPrimitive/hint-string-no-callables.js
new file mode 100644
index 0000000000..3ff8fb1bf6
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/Symbol.toPrimitive/hint-string-no-callables.js
@@ -0,0 +1,28 @@
+// Copyright (C) 2015 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype-@@toprimitive
+description: >
+    Behavior when `hint` is "string" and neither first nor second try are callable.
+info: |
+    1. Let O be the this value.
+    2. If Type(O) is not Object, throw a TypeError exception.
+    3. If hint is the String value "string" or the String value "default", then
+       a. Let tryFirst be "string".
+    4. Else if hint is the String value "number", then
+       a. Let tryFirst be "number".
+    5. Else, throw a TypeError exception.
+    6. Return OrdinaryToPrimitive(O, tryFirst).
+features: [Symbol.toPrimitive]
+---*/
+
+var obj = {
+  valueOf: null,
+  toString: null
+};
+
+assert.throws(TypeError, function() {
+  Date.prototype[Symbol.toPrimitive].call(obj, 'string');
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/Symbol.toPrimitive/length.js b/js/src/tests/test262/built-ins/Date/prototype/Symbol.toPrimitive/length.js
new file mode 100644
index 0000000000..1e46f05120
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/Symbol.toPrimitive/length.js
@@ -0,0 +1,29 @@
+// Copyright (C) 2015 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype-@@toprimitive
+description: Date.prototype[Symbol.toPrimitive] `length` property
+info: |
+    ES6 section 17:
+
+    Every built-in Function object, including constructors, has a length
+    property whose value is an integer. Unless otherwise specified, this value
+    is equal to the largest number of named arguments shown in the subclause
+    headings for the function description, including optional parameters.
+
+    [...]
+
+    Unless otherwise specified, the length property of a built-in Function
+    object has the attributes { [[Writable]]: false, [[Enumerable]]: false,
+    [[Configurable]]: true }.
+features: [Symbol.toPrimitive]
+includes: [propertyHelper.js]
+---*/
+
+assert.sameValue(Date.prototype[Symbol.toPrimitive].length, 1);
+
+verifyNotEnumerable(Date.prototype[Symbol.toPrimitive], 'length');
+verifyNotWritable(Date.prototype[Symbol.toPrimitive], 'length');
+verifyConfigurable(Date.prototype[Symbol.toPrimitive], 'length');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/Symbol.toPrimitive/name.js b/js/src/tests/test262/built-ins/Date/prototype/Symbol.toPrimitive/name.js
new file mode 100644
index 0000000000..e1e40be0fe
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/Symbol.toPrimitive/name.js
@@ -0,0 +1,28 @@
+// Copyright (C) 2015 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype-@@toprimitive
+description: Date.prototype[Symbol.toPrimitive] `name` property
+info: |
+    The value of the name property of this function is "[Symbol.toPrimitive]".
+
+    ES6 Section 17:
+
+    [...]
+
+    Unless otherwise specified, the name property of a built-in Function
+    object, if it exists, has the attributes { [[Writable]]: false,
+    [[Enumerable]]: false, [[Configurable]]: true }.
+features: [Symbol.toPrimitive]
+includes: [propertyHelper.js]
+---*/
+
+assert.sameValue(
+  Date.prototype[Symbol.toPrimitive].name, '[Symbol.toPrimitive]'
+);
+
+verifyNotEnumerable(Date.prototype[Symbol.toPrimitive], 'name');
+verifyNotWritable(Date.prototype[Symbol.toPrimitive], 'name');
+verifyConfigurable(Date.prototype[Symbol.toPrimitive], 'name');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/Symbol.toPrimitive/prop-desc.js b/js/src/tests/test262/built-ins/Date/prototype/Symbol.toPrimitive/prop-desc.js
new file mode 100644
index 0000000000..88fa1fffc5
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/Symbol.toPrimitive/prop-desc.js
@@ -0,0 +1,18 @@
+// Copyright (C) 2015 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.prototype-@@toprimitive
+description: Date.prototype[Symbol.toPrimitive] property descriptor
+info: |
+    This property has the attributes { [[Writable]]: false, [[Enumerable]]:
+    false, [[Configurable]]: true }.
+includes: [propertyHelper.js]
+features: [Symbol.toPrimitive]
+---*/
+
+verifyNotEnumerable(Date.prototype, Symbol.toPrimitive);
+verifyNotWritable(Date.prototype, Symbol.toPrimitive);
+verifyConfigurable(Date.prototype, Symbol.toPrimitive);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/Symbol.toPrimitive/shell.js b/js/src/tests/test262/built-ins/Date/prototype/Symbol.toPrimitive/shell.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/Symbol.toPrimitive/shell.js
diff --git a/js/src/tests/test262/built-ins/Date/prototype/Symbol.toPrimitive/this-val-non-obj.js b/js/src/tests/test262/built-ins/Date/prototype/Symbol.toPrimitive/this-val-non-obj.js
new file mode 100644
index 0000000000..ae8cc55b6a
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/Symbol.toPrimitive/this-val-non-obj.js
@@ -0,0 +1,34 @@
+// Copyright (C) 2015 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype-@@toprimitive
+description: Behavior when `this` value is not an Object
+info: |
+    1. Let O be the this value.
+    2. If Type(O) is not Object, throw a TypeError exception.
+features: [Symbol.toPrimitive]
+---*/
+
+assert.sameValue(typeof Date.prototype[Symbol.toPrimitive], 'function');
+
+assert.throws(TypeError, function() {
+  Date.prototype[Symbol.toPrimitive].call(undefined, 'string');
+});
+
+assert.throws(TypeError, function() {
+  Date.prototype[Symbol.toPrimitive].call(null, 'string');
+});
+
+assert.throws(TypeError, function() {
+  Date.prototype[Symbol.toPrimitive].call(86, 'string');
+});
+
+assert.throws(TypeError, function() {
+  Date.prototype[Symbol.toPrimitive].call('', 'string');
+});
+
+assert.throws(TypeError, function() {
+  Date.prototype[Symbol.toPrimitive].call(true, 'string');
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/browser.js b/js/src/tests/test262/built-ins/Date/prototype/browser.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/browser.js
diff --git a/js/src/tests/test262/built-ins/Date/prototype/constructor/S15.9.5.1_A1_T1.js b/js/src/tests/test262/built-ins/Date/prototype/constructor/S15.9.5.1_A1_T1.js
new file mode 100644
index 0000000000..3eb5e9e73b
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/constructor/S15.9.5.1_A1_T1.js
@@ -0,0 +1,25 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype property "constructor" has { DontEnum } attributes
+esid: sec-date.prototype.constructor
+description: Checking absence of ReadOnly attribute
+---*/
+
+var x = Date.prototype.constructor;
+if (x === 1) {
+  Date.prototype.constructor = 2;
+} else {
+  Date.prototype.constructor = 1;
+}
+
+assert.notSameValue(
+  Date.prototype.constructor,
+  x,
+  'The value of Date.prototype.constructor is expected to not equal the value of `x`'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/constructor/S15.9.5.1_A1_T2.js b/js/src/tests/test262/built-ins/Date/prototype/constructor/S15.9.5.1_A1_T2.js
new file mode 100644
index 0000000000..5c5c11a6ca
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/constructor/S15.9.5.1_A1_T2.js
@@ -0,0 +1,22 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype property "constructor" has { DontEnum } attributes
+esid: sec-date.prototype.constructor
+description: Checking absence of DontDelete attribute
+---*/
+assert.notSameValue(
+  delete Date.prototype.constructor,
+  false,
+  'The value of delete Date.prototype.constructor is not false'
+);
+
+assert(
+  !Date.prototype.hasOwnProperty('constructor'),
+  'The value of !Date.prototype.hasOwnProperty(\'constructor\') is expected to be true'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/constructor/S15.9.5.1_A1_T3.js b/js/src/tests/test262/built-ins/Date/prototype/constructor/S15.9.5.1_A1_T3.js
new file mode 100644
index 0000000000..4836a6f517
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/constructor/S15.9.5.1_A1_T3.js
@@ -0,0 +1,20 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype property "constructor" has { DontEnum } attributes
+esid: sec-date.prototype.constructor
+description: Checking DontEnum attribute
+---*/
+assert(
+  !Date.prototype.propertyIsEnumerable('constructor'),
+  'The value of !Date.prototype.propertyIsEnumerable(\'constructor\') is expected to be true'
+);
+
+for (var x in Date.prototype) {
+  assert.notSameValue(x, "constructor", 'The value of x is not "constructor"');
+}
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/constructor/S15.9.5.1_A2_T1.js b/js/src/tests/test262/built-ins/Date/prototype/constructor/S15.9.5.1_A2_T1.js
new file mode 100644
index 0000000000..8bc40b00c6
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/constructor/S15.9.5.1_A2_T1.js
@@ -0,0 +1,21 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The "length" property of the "constructor" is 7
+esid: sec-date.prototype.constructor
+description: The "length" property of the "constructor" is 7
+---*/
+assert.sameValue(
+  Date.prototype.constructor.hasOwnProperty("length"),
+  true,
+  'Date.prototype.constructor.hasOwnProperty("length") must return true'
+);
+
+assert.sameValue(
+  Date.prototype.constructor.length,
+  7,
+  'The value of Date.prototype.constructor.length is expected to be 7'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/constructor/S15.9.5.1_A3_T1.js b/js/src/tests/test262/built-ins/Date/prototype/constructor/S15.9.5.1_A3_T1.js
new file mode 100644
index 0000000000..fd40dfb3de
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/constructor/S15.9.5.1_A3_T1.js
@@ -0,0 +1,24 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype.constructor property "length" has { ReadOnly,
+    DontDelete, DontEnum } attributes
+esid: sec-date.prototype.constructor
+description: Checking ReadOnly attribute
+includes: [propertyHelper.js]
+---*/
+
+var x = Date.prototype.constructor.length;
+verifyNotWritable(Date.prototype.constructor, "length", null, 1);
+
+assert.sameValue(
+  Date.prototype.constructor.length,
+  x,
+  'The value of Date.prototype.constructor.length is expected to equal the value of x'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/constructor/S15.9.5.1_A3_T2.js b/js/src/tests/test262/built-ins/Date/prototype/constructor/S15.9.5.1_A3_T2.js
new file mode 100644
index 0000000000..c47d0ec996
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/constructor/S15.9.5.1_A3_T2.js
@@ -0,0 +1,24 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype.constructor property "length" has { ReadOnly, !
+    DontDelete, DontEnum } attributes
+esid: sec-date.prototype.constructor
+description: Checking DontDelete attribute
+---*/
+assert.sameValue(
+  delete Date.prototype.constructor.length,
+  true,
+  'The value of `delete Date.prototype.constructor.length` is expected to be true'
+);
+
+assert(
+  !Date.prototype.constructor.hasOwnProperty('length'),
+  'The value of !Date.prototype.constructor.hasOwnProperty(\'length\') is expected to be true'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/constructor/S15.9.5.1_A3_T3.js b/js/src/tests/test262/built-ins/Date/prototype/constructor/S15.9.5.1_A3_T3.js
new file mode 100644
index 0000000000..3821e5da76
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/constructor/S15.9.5.1_A3_T3.js
@@ -0,0 +1,22 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype.constructor property "length" has { ReadOnly,
+    DontDelete, DontEnum } attributes
+esid: sec-date.prototype.constructor
+description: Checking DontEnum attribute
+---*/
+assert(
+  !Date.prototype.constructor.propertyIsEnumerable('length'),
+  'The value of !Date.prototype.constructor.propertyIsEnumerable(\'length\') is expected to be true'
+);
+
+for (var x in Date.prototype.constructor) {
+  assert.notSameValue(x, "length", 'The value of x is not "length"');
+}
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/constructor/browser.js b/js/src/tests/test262/built-ins/Date/prototype/constructor/browser.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/constructor/browser.js
diff --git a/js/src/tests/test262/built-ins/Date/prototype/constructor/shell.js b/js/src/tests/test262/built-ins/Date/prototype/constructor/shell.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/constructor/shell.js
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getDate/S15.9.5.14_A1_T1.js b/js/src/tests/test262/built-ins/Date/prototype/getDate/S15.9.5.14_A1_T1.js
new file mode 100644
index 0000000000..b87c3db9cc
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getDate/S15.9.5.14_A1_T1.js
@@ -0,0 +1,25 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype property "getDate" has { DontEnum } attributes
+esid: sec-date.prototype.getdate
+description: Checking absence of ReadOnly attribute
+---*/
+
+var x = Date.prototype.getDate;
+if (x === 1) {
+  Date.prototype.getDate = 2;
+} else {
+  Date.prototype.getDate = 1;
+}
+
+assert.notSameValue(
+  Date.prototype.getDate,
+  x,
+  'The value of Date.prototype.getDate is expected to not equal the value of `x`'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getDate/S15.9.5.14_A1_T2.js b/js/src/tests/test262/built-ins/Date/prototype/getDate/S15.9.5.14_A1_T2.js
new file mode 100644
index 0000000000..57ffd0b6f6
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getDate/S15.9.5.14_A1_T2.js
@@ -0,0 +1,18 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype property "getDate" has { DontEnum } attributes
+esid: sec-date.prototype.getdate
+description: Checking absence of DontDelete attribute
+---*/
+assert.notSameValue(delete Date.prototype.getDate, false, 'The value of delete Date.prototype.getDate is not false');
+
+assert(
+  !Date.prototype.hasOwnProperty('getDate'),
+  'The value of !Date.prototype.hasOwnProperty(\'getDate\') is expected to be true'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getDate/S15.9.5.14_A1_T3.js b/js/src/tests/test262/built-ins/Date/prototype/getDate/S15.9.5.14_A1_T3.js
new file mode 100644
index 0000000000..f094cafad8
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getDate/S15.9.5.14_A1_T3.js
@@ -0,0 +1,20 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype property "getDate" has { DontEnum } attributes
+esid: sec-date.prototype.getdate
+description: Checking DontEnum attribute
+---*/
+assert(
+  !Date.prototype.propertyIsEnumerable('getDate'),
+  'The value of !Date.prototype.propertyIsEnumerable(\'getDate\') is expected to be true'
+);
+
+for (var x in Date.prototype) {
+  assert.notSameValue(x, "getDate", 'The value of x is not "getDate"');
+}
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getDate/S15.9.5.14_A2_T1.js b/js/src/tests/test262/built-ins/Date/prototype/getDate/S15.9.5.14_A2_T1.js
new file mode 100644
index 0000000000..48dc9be48d
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getDate/S15.9.5.14_A2_T1.js
@@ -0,0 +1,17 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The "length" property of the "getDate" is 0
+esid: sec-date.prototype.getdate
+description: The "length" property of the "getDate" is 0
+---*/
+assert.sameValue(
+  Date.prototype.getDate.hasOwnProperty("length"),
+  true,
+  'Date.prototype.getDate.hasOwnProperty("length") must return true'
+);
+
+assert.sameValue(Date.prototype.getDate.length, 0, 'The value of Date.prototype.getDate.length is expected to be 0');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getDate/S15.9.5.14_A3_T1.js b/js/src/tests/test262/built-ins/Date/prototype/getDate/S15.9.5.14_A3_T1.js
new file mode 100644
index 0000000000..910e6edaf8
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getDate/S15.9.5.14_A3_T1.js
@@ -0,0 +1,24 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype.getDate property "length" has { ReadOnly, DontDelete,
+    DontEnum } attributes
+esid: sec-date.prototype.getdate
+description: Checking ReadOnly attribute
+includes: [propertyHelper.js]
+---*/
+
+var x = Date.prototype.getDate.length;
+verifyNotWritable(Date.prototype.getDate, "length", null, 1);
+
+assert.sameValue(
+  Date.prototype.getDate.length,
+  x,
+  'The value of Date.prototype.getDate.length is expected to equal the value of x'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getDate/S15.9.5.14_A3_T2.js b/js/src/tests/test262/built-ins/Date/prototype/getDate/S15.9.5.14_A3_T2.js
new file mode 100644
index 0000000000..3edcd8fe2e
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getDate/S15.9.5.14_A3_T2.js
@@ -0,0 +1,24 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype.getDate property "length" has { ReadOnly, !
+    DontDelete, DontEnum } attributes
+esid: sec-date.prototype.getdate
+description: Checking DontDelete attribute
+---*/
+assert.sameValue(
+  delete Date.prototype.getDate.length,
+  true,
+  'The value of `delete Date.prototype.getDate.length` is expected to be true'
+);
+
+assert(
+  !Date.prototype.getDate.hasOwnProperty('length'),
+  'The value of !Date.prototype.getDate.hasOwnProperty(\'length\') is expected to be true'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getDate/S15.9.5.14_A3_T3.js b/js/src/tests/test262/built-ins/Date/prototype/getDate/S15.9.5.14_A3_T3.js
new file mode 100644
index 0000000000..4b9f0503ef
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getDate/S15.9.5.14_A3_T3.js
@@ -0,0 +1,22 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype.getDate property "length" has { ReadOnly, DontDelete,
+    DontEnum } attributes
+esid: sec-date.prototype.getdate
+description: Checking DontEnum attribute
+---*/
+assert(
+  !Date.prototype.getDate.propertyIsEnumerable('length'),
+  'The value of !Date.prototype.getDate.propertyIsEnumerable(\'length\') is expected to be true'
+);
+
+for (var x in Date.prototype.getDate) {
+  assert.notSameValue(x, "length", 'The value of x is not "length"');
+}
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getDate/browser.js b/js/src/tests/test262/built-ins/Date/prototype/getDate/browser.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getDate/browser.js
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getDate/name.js b/js/src/tests/test262/built-ins/Date/prototype/getDate/name.js
new file mode 100644
index 0000000000..3c1574d163
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getDate/name.js
@@ -0,0 +1,28 @@
+// Copyright (C) 2015 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.prototype.getdate
+description: >
+  Date.prototype.getDate.name is "getDate".
+info: |
+  Date.prototype.getDate ( )
+
+  17 ECMAScript Standard Built-in Objects:
+    Every built-in Function object, including constructors, that is not
+    identified as an anonymous function has a name property whose value
+    is a String.
+
+    Unless otherwise specified, the name property of a built-in Function
+    object, if it exists, has the attributes { [[Writable]]: false,
+    [[Enumerable]]: false, [[Configurable]]: true }.
+includes: [propertyHelper.js]
+---*/
+
+assert.sameValue(Date.prototype.getDate.name, "getDate");
+
+verifyNotEnumerable(Date.prototype.getDate, "name");
+verifyNotWritable(Date.prototype.getDate, "name");
+verifyConfigurable(Date.prototype.getDate, "name");
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getDate/not-a-constructor.js b/js/src/tests/test262/built-ins/Date/prototype/getDate/not-a-constructor.js
new file mode 100644
index 0000000000..675f61b753
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getDate/not-a-constructor.js
@@ -0,0 +1,35 @@
+// Copyright (C) 2020 Rick Waldron. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-ecmascript-standard-built-in-objects
+description: >
+  Date.prototype.getDate does not implement [[Construct]], is not new-able
+info: |
+  ECMAScript Function Objects
+
+  Built-in function objects that are not identified as constructors do not
+  implement the [[Construct]] internal method unless otherwise specified in
+  the description of a particular function.
+
+  sec-evaluatenew
+
+  ...
+  7. If IsConstructor(constructor) is false, throw a TypeError exception.
+  ...
+includes: [isConstructor.js]
+features: [Reflect.construct, arrow-function]
+---*/
+
+assert.sameValue(
+  isConstructor(Date.prototype.getDate),
+  false,
+  'isConstructor(Date.prototype.getDate) must return false'
+);
+
+assert.throws(TypeError, () => {
+  let date = new Date(Date.now()); new date.getDate();
+}, '`let date = new Date(Date.now()); new date.getDate()` throws TypeError');
+
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getDate/shell.js b/js/src/tests/test262/built-ins/Date/prototype/getDate/shell.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getDate/shell.js
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getDate/this-value-invalid-date.js b/js/src/tests/test262/built-ins/Date/prototype/getDate/this-value-invalid-date.js
new file mode 100644
index 0000000000..a0e9c653da
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getDate/this-value-invalid-date.js
@@ -0,0 +1,13 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.getdate
+description: Return value for invalid date
+info: |
+  1. Let t be ? thisTimeValue(this value).
+  2. If t is NaN, return NaN.
+---*/
+
+assert.sameValue(new Date(NaN).getDate(), NaN);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getDate/this-value-non-date.js b/js/src/tests/test262/built-ins/Date/prototype/getDate/this-value-non-date.js
new file mode 100644
index 0000000000..009b25c25a
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getDate/this-value-non-date.js
@@ -0,0 +1,36 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.getdate
+description: >
+  Behavior when "this" value is an Object without a [[DateValue]] internal slot
+info: |
+  1. Let t be ? thisTimeValue(this value).
+
+  The abstract operation thisTimeValue(value) performs the following steps:
+
+  1. If Type(value) is Object and value has a [[DateValue]] internal slot, then
+     a. Return value.[[DateValue]].
+  2. Throw a TypeError exception.
+---*/
+
+var getDate = Date.prototype.getDate;
+var args = (function() {
+  return arguments;
+}());
+
+assert.sameValue(typeof getDate, 'function');
+
+assert.throws(TypeError, function() {
+  getDate.call({});
+}, 'ordinary object');
+
+assert.throws(TypeError, function() {
+  getDate.call([]);
+}, 'array exotic object');
+
+assert.throws(TypeError, function() {
+  getDate.call(args);
+}, 'arguments exotic object');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getDate/this-value-non-object.js b/js/src/tests/test262/built-ins/Date/prototype/getDate/this-value-non-object.js
new file mode 100644
index 0000000000..5804d7d97d
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getDate/this-value-non-object.js
@@ -0,0 +1,46 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.getdate
+description: Behavior when "this" value is not an Object
+info: |
+  1. Let t be ? thisTimeValue(this value).
+
+  The abstract operation thisTimeValue(value) performs the following steps:
+
+  1. If Type(value) is Object and value has a [[DateValue]] internal slot, then
+     a. Return value.[[DateValue]].
+  2. Throw a TypeError exception.
+features: [Symbol]
+---*/
+
+var getDate = Date.prototype.getDate;
+var symbol = Symbol();
+
+assert.sameValue(typeof getDate, 'function');
+
+assert.throws(TypeError, function() {
+  getDate.call(0);
+}, 'number');
+
+assert.throws(TypeError, function() {
+  getDate.call(true);
+}, 'boolean');
+
+assert.throws(TypeError, function() {
+  getDate.call(null);
+}, 'null');
+
+assert.throws(TypeError, function() {
+  getDate.call(undefined);
+}, 'undefined');
+
+assert.throws(TypeError, function() {
+  getDate.call('');
+}, 'string');
+
+assert.throws(TypeError, function() {
+  getDate.call(symbol);
+}, 'symbol');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getDate/this-value-valid-date.js b/js/src/tests/test262/built-ins/Date/prototype/getDate/this-value-valid-date.js
new file mode 100644
index 0000000000..1f765dc15c
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getDate/this-value-valid-date.js
@@ -0,0 +1,42 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.getdate
+description: Return value for valid dates
+info: |
+  1. Let t be ? thisTimeValue(this value).
+  2. If t is NaN, return NaN.
+  3. Return DateFromTime(LocalTime(t)).
+---*/
+
+assert.sameValue(new Date(2016, 6, 6).getDate(), 6, 'first millisecond');
+assert.sameValue(
+  new Date(2016, 6, 6, 0, 0, 0, -1).getDate(), 5, 'previous millisecond'
+);
+assert.sameValue(
+  new Date(2016, 6, 6, 23, 59, 59, 999).getDate(), 6, 'final millisecond'
+);
+assert.sameValue(
+  new Date(2016, 6, 6, 23, 59, 59, 1000).getDate(), 7, 'subsequent millisecond'
+);
+
+assert.sameValue(
+  new Date(2016, 1, 29).getDate(), 29, 'first millisecond (month boundary)'
+);
+assert.sameValue(
+  new Date(2016, 1, 29, 0, 0, 0, -1).getDate(),
+  28,
+  'previous millisecond (month boundary)'
+);
+assert.sameValue(
+  new Date(2016, 1, 29, 23, 59, 59, 999).getDate(),
+  29,
+  'final millisecond (month boundary)'
+);
+assert.sameValue(
+  new Date(2016, 1, 29, 23, 59, 59, 1000).getDate(),
+  1,
+  'subsequent millisecond (month boundary)'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getDay/S15.9.5.16_A1_T1.js b/js/src/tests/test262/built-ins/Date/prototype/getDay/S15.9.5.16_A1_T1.js
new file mode 100644
index 0000000000..7fc24d1c49
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getDay/S15.9.5.16_A1_T1.js
@@ -0,0 +1,26 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.prototype.getday
+info: The Date.prototype property "getDay" has { DontEnum } attributes
+es5id: 15.9.5.16_A1_T1
+description: Checking absence of ReadOnly attribute
+---*/
+
+var x = Date.prototype.getDay;
+if (x === 1) {
+  Date.prototype.getDay = 2;
+} else {
+  Date.prototype.getDay = 1;
+}
+
+assert.notSameValue(
+  Date.prototype.getDay,
+  x,
+  'The value of Date.prototype.getDay is expected to not equal the value of `x`'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getDay/S15.9.5.16_A1_T2.js b/js/src/tests/test262/built-ins/Date/prototype/getDay/S15.9.5.16_A1_T2.js
new file mode 100644
index 0000000000..d7e7f2b9c5
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getDay/S15.9.5.16_A1_T2.js
@@ -0,0 +1,19 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.prototype.getday
+info: The Date.prototype property "getDay" has { DontEnum } attributes
+es5id: 15.9.5.16_A1_T2
+description: Checking absence of DontDelete attribute
+---*/
+assert.notSameValue(delete Date.prototype.getDay, false, 'The value of delete Date.prototype.getDay is not false');
+
+assert(
+  !Date.prototype.hasOwnProperty('getDay'),
+  'The value of !Date.prototype.hasOwnProperty(\'getDay\') is expected to be true'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getDay/S15.9.5.16_A1_T3.js b/js/src/tests/test262/built-ins/Date/prototype/getDay/S15.9.5.16_A1_T3.js
new file mode 100644
index 0000000000..45b3e2956b
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getDay/S15.9.5.16_A1_T3.js
@@ -0,0 +1,21 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.prototype.getday
+info: The Date.prototype property "getDay" has { DontEnum } attributes
+es5id: 15.9.5.16_A1_T3
+description: Checking DontEnum attribute
+---*/
+assert(
+  !Date.prototype.propertyIsEnumerable('getDay'),
+  'The value of !Date.prototype.propertyIsEnumerable(\'getDay\') is expected to be true'
+);
+
+for (var x in Date.prototype) {
+  assert.notSameValue(x, "getDay", 'The value of x is not "getDay"');
+}
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getDay/S15.9.5.16_A2_T1.js b/js/src/tests/test262/built-ins/Date/prototype/getDay/S15.9.5.16_A2_T1.js
new file mode 100644
index 0000000000..420c63de1d
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getDay/S15.9.5.16_A2_T1.js
@@ -0,0 +1,18 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.prototype.getday
+info: The "length" property of the "getDay" is 0
+es5id: 15.9.5.16_A2_T1
+description: The "length" property of the "getDay" is 0
+---*/
+assert.sameValue(
+  Date.prototype.getDay.hasOwnProperty("length"),
+  true,
+  'Date.prototype.getDay.hasOwnProperty("length") must return true'
+);
+
+assert.sameValue(Date.prototype.getDay.length, 0, 'The value of Date.prototype.getDay.length is expected to be 0');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getDay/S15.9.5.16_A3_T1.js b/js/src/tests/test262/built-ins/Date/prototype/getDay/S15.9.5.16_A3_T1.js
new file mode 100644
index 0000000000..05e4b08b05
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getDay/S15.9.5.16_A3_T1.js
@@ -0,0 +1,25 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.prototype.getday
+info: |
+    The Date.prototype.getDay property "length" has { ReadOnly, DontDelete,
+    DontEnum } attributes
+es5id: 15.9.5.16_A3_T1
+description: Checking ReadOnly attribute
+includes: [propertyHelper.js]
+---*/
+
+var x = Date.prototype.getDay.length;
+verifyNotWritable(Date.prototype.getDay, "length", null, 1);
+
+assert.sameValue(
+  Date.prototype.getDay.length,
+  x,
+  'The value of Date.prototype.getDay.length is expected to equal the value of x'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getDay/S15.9.5.16_A3_T2.js b/js/src/tests/test262/built-ins/Date/prototype/getDay/S15.9.5.16_A3_T2.js
new file mode 100644
index 0000000000..e133e5c31e
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getDay/S15.9.5.16_A3_T2.js
@@ -0,0 +1,25 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.prototype.getday
+info: |
+    The Date.prototype.getDay property "length" has { ReadOnly, ! DontDelete,
+    DontEnum } attributes
+es5id: 15.9.5.16_A3_T2
+description: Checking DontDelete attribute
+---*/
+assert.sameValue(
+  delete Date.prototype.getDay.length,
+  true,
+  'The value of `delete Date.prototype.getDay.length` is expected to be true'
+);
+
+assert(
+  !Date.prototype.getDay.hasOwnProperty('length'),
+  'The value of !Date.prototype.getDay.hasOwnProperty(\'length\') is expected to be true'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getDay/S15.9.5.16_A3_T3.js b/js/src/tests/test262/built-ins/Date/prototype/getDay/S15.9.5.16_A3_T3.js
new file mode 100644
index 0000000000..56b83dbf97
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getDay/S15.9.5.16_A3_T3.js
@@ -0,0 +1,23 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.prototype.getday
+info: |
+    The Date.prototype.getDay property "length" has { ReadOnly, DontDelete,
+    DontEnum } attributes
+es5id: 15.9.5.16_A3_T3
+description: Checking DontEnum attribute
+---*/
+assert(
+  !Date.prototype.getDay.propertyIsEnumerable('length'),
+  'The value of !Date.prototype.getDay.propertyIsEnumerable(\'length\') is expected to be true'
+);
+
+for (var x in Date.prototype.getDay) {
+  assert.notSameValue(x, "length", 'The value of x is not "length"');
+}
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getDay/browser.js b/js/src/tests/test262/built-ins/Date/prototype/getDay/browser.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getDay/browser.js
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getDay/name.js b/js/src/tests/test262/built-ins/Date/prototype/getDay/name.js
new file mode 100644
index 0000000000..89c16d7928
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getDay/name.js
@@ -0,0 +1,28 @@
+// Copyright (C) 2015 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.prototype.getday
+description: >
+  Date.prototype.getDay.name is "getDay".
+info: |
+  Date.prototype.getDay ( )
+
+  17 ECMAScript Standard Built-in Objects:
+    Every built-in Function object, including constructors, that is not
+    identified as an anonymous function has a name property whose value
+    is a String.
+
+    Unless otherwise specified, the name property of a built-in Function
+    object, if it exists, has the attributes { [[Writable]]: false,
+    [[Enumerable]]: false, [[Configurable]]: true }.
+includes: [propertyHelper.js]
+---*/
+
+assert.sameValue(Date.prototype.getDay.name, "getDay");
+
+verifyNotEnumerable(Date.prototype.getDay, "name");
+verifyNotWritable(Date.prototype.getDay, "name");
+verifyConfigurable(Date.prototype.getDay, "name");
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getDay/not-a-constructor.js b/js/src/tests/test262/built-ins/Date/prototype/getDay/not-a-constructor.js
new file mode 100644
index 0000000000..08a25137e9
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getDay/not-a-constructor.js
@@ -0,0 +1,35 @@
+// Copyright (C) 2020 Rick Waldron. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-ecmascript-standard-built-in-objects
+description: >
+  Date.prototype.getDay does not implement [[Construct]], is not new-able
+info: |
+  ECMAScript Function Objects
+
+  Built-in function objects that are not identified as constructors do not
+  implement the [[Construct]] internal method unless otherwise specified in
+  the description of a particular function.
+
+  sec-evaluatenew
+
+  ...
+  7. If IsConstructor(constructor) is false, throw a TypeError exception.
+  ...
+includes: [isConstructor.js]
+features: [Reflect.construct, arrow-function]
+---*/
+
+assert.sameValue(
+  isConstructor(Date.prototype.getDay),
+  false,
+  'isConstructor(Date.prototype.getDay) must return false'
+);
+
+assert.throws(TypeError, () => {
+  let date = new Date(Date.now()); new date.getDay();
+}, '`let date = new Date(Date.now()); new date.getDay()` throws TypeError');
+
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getDay/shell.js b/js/src/tests/test262/built-ins/Date/prototype/getDay/shell.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getDay/shell.js
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getDay/this-value-invalid-date.js b/js/src/tests/test262/built-ins/Date/prototype/getDay/this-value-invalid-date.js
new file mode 100644
index 0000000000..2040a95868
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getDay/this-value-invalid-date.js
@@ -0,0 +1,13 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.getday
+description: Return value for invalid date
+info: |
+  1. Let t be ? thisTimeValue(this value).
+  2. If t is NaN, return NaN.
+---*/
+
+assert.sameValue(new Date(NaN).getDay(), NaN);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getDay/this-value-non-date.js b/js/src/tests/test262/built-ins/Date/prototype/getDay/this-value-non-date.js
new file mode 100644
index 0000000000..a800f5cc0d
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getDay/this-value-non-date.js
@@ -0,0 +1,36 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.getday
+description: >
+  Behavior when "this" value is an Object without a [[DateValue]] internal slot
+info: |
+  1. Let t be ? thisTimeValue(this value).
+
+  The abstract operation thisTimeValue(value) performs the following steps:
+
+  1. If Type(value) is Object and value has a [[DateValue]] internal slot, then
+     a. Return value.[[DateValue]].
+  2. Throw a TypeError exception.
+---*/
+
+var getDay = Date.prototype.getDay;
+var args = (function() {
+  return arguments;
+}());
+
+assert.sameValue(typeof getDay, 'function');
+
+assert.throws(TypeError, function() {
+  getDay.call({});
+}, 'ordinary object');
+
+assert.throws(TypeError, function() {
+  getDay.call([]);
+}, 'array exotic object');
+
+assert.throws(TypeError, function() {
+  getDay.call(args);
+}, 'arguments exotic object');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getDay/this-value-non-object.js b/js/src/tests/test262/built-ins/Date/prototype/getDay/this-value-non-object.js
new file mode 100644
index 0000000000..708533f16f
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getDay/this-value-non-object.js
@@ -0,0 +1,46 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.getday
+description: Behavior when "this" value is not an Object
+info: |
+  1. Let t be ? thisTimeValue(this value).
+
+  The abstract operation thisTimeValue(value) performs the following steps:
+
+  1. If Type(value) is Object and value has a [[DateValue]] internal slot, then
+     a. Return value.[[DateValue]].
+  2. Throw a TypeError exception.
+features: [Symbol]
+---*/
+
+var getDay = Date.prototype.getDay;
+var symbol = Symbol();
+
+assert.sameValue(typeof getDay, 'function');
+
+assert.throws(TypeError, function() {
+  getDay.call(0);
+}, 'number');
+
+assert.throws(TypeError, function() {
+  getDay.call(true);
+}, 'boolean');
+
+assert.throws(TypeError, function() {
+  getDay.call(null);
+}, 'null');
+
+assert.throws(TypeError, function() {
+  getDay.call(undefined);
+}, 'undefined');
+
+assert.throws(TypeError, function() {
+  getDay.call('');
+}, 'string');
+
+assert.throws(TypeError, function() {
+  getDay.call(symbol);
+}, 'symbol');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getDay/this-value-valid-date.js b/js/src/tests/test262/built-ins/Date/prototype/getDay/this-value-valid-date.js
new file mode 100644
index 0000000000..9a792771d3
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getDay/this-value-valid-date.js
@@ -0,0 +1,42 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.getday
+description: Return value for valid dates
+info: |
+  1. Let t be ? thisTimeValue(this value).
+  2. If t is NaN, return NaN.
+  3. Return WeekDay(LocalTime(t)).
+---*/
+
+assert.sameValue(new Date(2016, 6, 6).getDay(), 3, 'first millisecond');
+assert.sameValue(
+  new Date(2016, 6, 6, 0, 0, 0, -1).getDay(), 2, 'previous millisecond'
+);
+assert.sameValue(
+  new Date(2016, 6, 6, 23, 59, 59, 999).getDay(), 3, 'final millisecond'
+);
+assert.sameValue(
+  new Date(2016, 6, 6, 23, 59, 59, 1000).getDay(), 4, 'subsequent millisecond'
+);
+
+assert.sameValue(
+  new Date(2016, 6, 9).getDay(), 6, 'first millisecond (week boundary)'
+);
+assert.sameValue(
+  new Date(2016, 6, 9, 0, 0, 0, -1).getDay(),
+  5,
+  'previous millisecond (week boundary)'
+);
+assert.sameValue(
+  new Date(2016, 6, 9, 23, 59, 59, 999).getDay(),
+  6,
+  'final millisecond (week boundary)'
+);
+assert.sameValue(
+  new Date(2016, 6, 9, 23, 59, 59, 1000).getDay(),
+  0,
+  'subsequent millisecond (week boundary)'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getFullYear/S15.9.5.10_A1_T1.js b/js/src/tests/test262/built-ins/Date/prototype/getFullYear/S15.9.5.10_A1_T1.js
new file mode 100644
index 0000000000..7c5a812e3c
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getFullYear/S15.9.5.10_A1_T1.js
@@ -0,0 +1,26 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.prototype.getfullyear
+info: The Date.prototype property "getFullYear" has { DontEnum } attributes
+es5id: 15.9.5.10_A1_T1
+description: Checking absence of ReadOnly attribute
+---*/
+
+var x = Date.prototype.getFullYear;
+if (x === 1) {
+  Date.prototype.getFullYear = 2;
+} else {
+  Date.prototype.getFullYear = 1;
+}
+
+assert.notSameValue(
+  Date.prototype.getFullYear,
+  x,
+  'The value of Date.prototype.getFullYear is expected to not equal the value of `x`'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getFullYear/S15.9.5.10_A1_T2.js b/js/src/tests/test262/built-ins/Date/prototype/getFullYear/S15.9.5.10_A1_T2.js
new file mode 100644
index 0000000000..bb2f4ca35a
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getFullYear/S15.9.5.10_A1_T2.js
@@ -0,0 +1,23 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.prototype.getfullyear
+info: The Date.prototype property "getFullYear" has { DontEnum } attributes
+es5id: 15.9.5.10_A1_T2
+description: Checking absence of DontDelete attribute
+---*/
+assert.notSameValue(
+  delete Date.prototype.getFullYear,
+  false,
+  'The value of delete Date.prototype.getFullYear is not false'
+);
+
+assert(
+  !Date.prototype.hasOwnProperty('getFullYear'),
+  'The value of !Date.prototype.hasOwnProperty(\'getFullYear\') is expected to be true'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getFullYear/S15.9.5.10_A1_T3.js b/js/src/tests/test262/built-ins/Date/prototype/getFullYear/S15.9.5.10_A1_T3.js
new file mode 100644
index 0000000000..0007014fc4
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getFullYear/S15.9.5.10_A1_T3.js
@@ -0,0 +1,21 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.prototype.getfullyear
+info: The Date.prototype property "getFullYear" has { DontEnum } attributes
+es5id: 15.9.5.10_A1_T3
+description: Checking DontEnum attribute
+---*/
+assert(
+  !Date.prototype.propertyIsEnumerable('getFullYear'),
+  'The value of !Date.prototype.propertyIsEnumerable(\'getFullYear\') is expected to be true'
+);
+
+for (var x in Date.prototype) {
+  assert.notSameValue(x, "getFullYear", 'The value of x is not "getFullYear"');
+}
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getFullYear/S15.9.5.10_A2_T1.js b/js/src/tests/test262/built-ins/Date/prototype/getFullYear/S15.9.5.10_A2_T1.js
new file mode 100644
index 0000000000..dfa43ba710
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getFullYear/S15.9.5.10_A2_T1.js
@@ -0,0 +1,22 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.prototype.getfullyear
+info: The "length" property of the "getFullYear" is 0
+es5id: 15.9.5.10_A2_T1
+description: The "length" property of the "getFullYear" is 0
+---*/
+assert.sameValue(
+  Date.prototype.getFullYear.hasOwnProperty("length"),
+  true,
+  'Date.prototype.getFullYear.hasOwnProperty("length") must return true'
+);
+
+assert.sameValue(
+  Date.prototype.getFullYear.length,
+  0,
+  'The value of Date.prototype.getFullYear.length is expected to be 0'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getFullYear/S15.9.5.10_A3_T1.js b/js/src/tests/test262/built-ins/Date/prototype/getFullYear/S15.9.5.10_A3_T1.js
new file mode 100644
index 0000000000..96612522fb
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getFullYear/S15.9.5.10_A3_T1.js
@@ -0,0 +1,25 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.prototype.getfullyear
+info: |
+    The Date.prototype.getFullYear property "length" has { ReadOnly,
+    DontDelete, DontEnum } attributes
+es5id: 15.9.5.10_A3_T1
+description: Checking ReadOnly attribute
+includes: [propertyHelper.js]
+---*/
+
+var x = Date.prototype.getFullYear.length;
+verifyNotWritable(Date.prototype.getFullYear, "length", null, 1);
+
+assert.sameValue(
+  Date.prototype.getFullYear.length,
+  x,
+  'The value of Date.prototype.getFullYear.length is expected to equal the value of x'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getFullYear/S15.9.5.10_A3_T2.js b/js/src/tests/test262/built-ins/Date/prototype/getFullYear/S15.9.5.10_A3_T2.js
new file mode 100644
index 0000000000..7e3309aed2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getFullYear/S15.9.5.10_A3_T2.js
@@ -0,0 +1,25 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.prototype.getfullyear
+info: |
+    The Date.prototype.getFullYear property "length" has { ReadOnly, !
+    DontDelete, DontEnum } attributes
+es5id: 15.9.5.10_A3_T2
+description: Checking DontDelete attribute
+---*/
+assert.sameValue(
+  delete Date.prototype.getFullYear.length,
+  true,
+  'The value of `delete Date.prototype.getFullYear.length` is expected to be true'
+);
+
+assert(
+  !Date.prototype.getFullYear.hasOwnProperty('length'),
+  'The value of !Date.prototype.getFullYear.hasOwnProperty(\'length\') is expected to be true'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getFullYear/S15.9.5.10_A3_T3.js b/js/src/tests/test262/built-ins/Date/prototype/getFullYear/S15.9.5.10_A3_T3.js
new file mode 100644
index 0000000000..aa8696ea56
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getFullYear/S15.9.5.10_A3_T3.js
@@ -0,0 +1,23 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.prototype.getfullyear
+info: |
+    The Date.prototype.getFullYear property "length" has { ReadOnly,
+    DontDelete, DontEnum } attributes
+es5id: 15.9.5.10_A3_T3
+description: Checking DontEnum attribute
+---*/
+assert(
+  !Date.prototype.getFullYear.propertyIsEnumerable('length'),
+  'The value of !Date.prototype.getFullYear.propertyIsEnumerable(\'length\') is expected to be true'
+);
+
+for (var x in Date.prototype.getFullYear) {
+  assert.notSameValue(x, "length", 'The value of x is not "length"');
+}
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getFullYear/browser.js b/js/src/tests/test262/built-ins/Date/prototype/getFullYear/browser.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getFullYear/browser.js
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getFullYear/name.js b/js/src/tests/test262/built-ins/Date/prototype/getFullYear/name.js
new file mode 100644
index 0000000000..d6a5b8e6ce
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getFullYear/name.js
@@ -0,0 +1,28 @@
+// Copyright (C) 2015 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.prototype.getfullyear
+description: >
+  Date.prototype.getFullYear.name is "getFullYear".
+info: |
+  Date.prototype.getFullYear ( )
+
+  17 ECMAScript Standard Built-in Objects:
+    Every built-in Function object, including constructors, that is not
+    identified as an anonymous function has a name property whose value
+    is a String.
+
+    Unless otherwise specified, the name property of a built-in Function
+    object, if it exists, has the attributes { [[Writable]]: false,
+    [[Enumerable]]: false, [[Configurable]]: true }.
+includes: [propertyHelper.js]
+---*/
+
+assert.sameValue(Date.prototype.getFullYear.name, "getFullYear");
+
+verifyNotEnumerable(Date.prototype.getFullYear, "name");
+verifyNotWritable(Date.prototype.getFullYear, "name");
+verifyConfigurable(Date.prototype.getFullYear, "name");
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getFullYear/not-a-constructor.js b/js/src/tests/test262/built-ins/Date/prototype/getFullYear/not-a-constructor.js
new file mode 100644
index 0000000000..917047cfdb
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getFullYear/not-a-constructor.js
@@ -0,0 +1,35 @@
+// Copyright (C) 2020 Rick Waldron. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-ecmascript-standard-built-in-objects
+description: >
+  Date.prototype.getFullYear does not implement [[Construct]], is not new-able
+info: |
+  ECMAScript Function Objects
+
+  Built-in function objects that are not identified as constructors do not
+  implement the [[Construct]] internal method unless otherwise specified in
+  the description of a particular function.
+
+  sec-evaluatenew
+
+  ...
+  7. If IsConstructor(constructor) is false, throw a TypeError exception.
+  ...
+includes: [isConstructor.js]
+features: [Reflect.construct, arrow-function]
+---*/
+
+assert.sameValue(
+  isConstructor(Date.prototype.getFullYear),
+  false,
+  'isConstructor(Date.prototype.getFullYear) must return false'
+);
+
+assert.throws(TypeError, () => {
+  let date = new Date(Date.now()); new date.getFullYear();
+}, '`let date = new Date(Date.now()); new date.getFullYear()` throws TypeError');
+
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getFullYear/shell.js b/js/src/tests/test262/built-ins/Date/prototype/getFullYear/shell.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getFullYear/shell.js
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getFullYear/this-value-invalid-date.js b/js/src/tests/test262/built-ins/Date/prototype/getFullYear/this-value-invalid-date.js
new file mode 100644
index 0000000000..3a13ff8808
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getFullYear/this-value-invalid-date.js
@@ -0,0 +1,13 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.getfullyear
+description: Return value for invalid date
+info: |
+  1. Let t be ? thisTimeValue(this value).
+  2. If t is NaN, return NaN.
+---*/
+
+assert.sameValue(new Date(NaN).getFullYear(), NaN);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getFullYear/this-value-non-date.js b/js/src/tests/test262/built-ins/Date/prototype/getFullYear/this-value-non-date.js
new file mode 100644
index 0000000000..acc63be044
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getFullYear/this-value-non-date.js
@@ -0,0 +1,36 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.getfullyear
+description: >
+  Behavior when "this" value is an Object without a [[DateValue]] internal slot
+info: |
+  1. Let t be ? thisTimeValue(this value).
+
+  The abstract operation thisTimeValue(value) performs the following steps:
+
+  1. If Type(value) is Object and value has a [[DateValue]] internal slot, then
+     a. Return value.[[DateValue]].
+  2. Throw a TypeError exception.
+---*/
+
+var getFullYear = Date.prototype.getFullYear;
+var args = (function() {
+  return arguments;
+}());
+
+assert.sameValue(typeof getFullYear, 'function');
+
+assert.throws(TypeError, function() {
+  getFullYear.call({});
+}, 'ordinary object');
+
+assert.throws(TypeError, function() {
+  getFullYear.call([]);
+}, 'array exotic object');
+
+assert.throws(TypeError, function() {
+  getFullYear.call(args);
+}, 'arguments exotic object');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getFullYear/this-value-non-object.js b/js/src/tests/test262/built-ins/Date/prototype/getFullYear/this-value-non-object.js
new file mode 100644
index 0000000000..6f6c50d8bd
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getFullYear/this-value-non-object.js
@@ -0,0 +1,46 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.getfullyear
+description: Behavior when "this" value is not an Object
+info: |
+  1. Let t be ? thisTimeValue(this value).
+
+  The abstract operation thisTimeValue(value) performs the following steps:
+
+  1. If Type(value) is Object and value has a [[DateValue]] internal slot, then
+     a. Return value.[[DateValue]].
+  2. Throw a TypeError exception.
+features: [Symbol]
+---*/
+
+var getFullYear = Date.prototype.getFullYear;
+var symbol = Symbol();
+
+assert.sameValue(typeof getFullYear, 'function');
+
+assert.throws(TypeError, function() {
+  getFullYear.call(0);
+}, 'number');
+
+assert.throws(TypeError, function() {
+  getFullYear.call(true);
+}, 'boolean');
+
+assert.throws(TypeError, function() {
+  getFullYear.call(null);
+}, 'null');
+
+assert.throws(TypeError, function() {
+  getFullYear.call(undefined);
+}, 'undefined');
+
+assert.throws(TypeError, function() {
+  getFullYear.call('');
+}, 'string');
+
+assert.throws(TypeError, function() {
+  getFullYear.call(symbol);
+}, 'symbol');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getFullYear/this-value-valid-date.js b/js/src/tests/test262/built-ins/Date/prototype/getFullYear/this-value-valid-date.js
new file mode 100644
index 0000000000..d3be3f5411
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getFullYear/this-value-valid-date.js
@@ -0,0 +1,27 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.getfullyear
+description: Return value for valid dates
+info: |
+  1. Let t be ? thisTimeValue(this value).
+  2. If t is NaN, return NaN.
+  3. Return YearFromTime(LocalTime(t)).
+---*/
+
+assert.sameValue(new Date(2016, 0).getFullYear(), 2016, 'first millisecond');
+assert.sameValue(
+  new Date(2016, 0, 1, 0, 0, 0, -1).getFullYear(), 2015, 'previous millisecond'
+);
+assert.sameValue(
+  new Date(2016, 11, 31, 23, 59, 59, 999).getFullYear(),
+  2016,
+  'final millisecond'
+);
+assert.sameValue(
+  new Date(2016, 11, 31, 23, 59, 59, 1000).getFullYear(),
+  2017,
+  'subsequent millisecond'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getHours/S15.9.5.18_A1_T1.js b/js/src/tests/test262/built-ins/Date/prototype/getHours/S15.9.5.18_A1_T1.js
new file mode 100644
index 0000000000..b5d567e82b
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getHours/S15.9.5.18_A1_T1.js
@@ -0,0 +1,26 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.prototype.gethours
+info: The Date.prototype property "getHours" has { DontEnum } attributes
+es5id: 15.9.5.18_A1_T1
+description: Checking absence of ReadOnly attribute
+---*/
+
+var x = Date.prototype.getHours;
+if (x === 1) {
+  Date.prototype.getHours = 2;
+} else {
+  Date.prototype.getHours = 1;
+}
+
+assert.notSameValue(
+  Date.prototype.getHours,
+  x,
+  'The value of Date.prototype.getHours is expected to not equal the value of `x`'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getHours/S15.9.5.18_A1_T2.js b/js/src/tests/test262/built-ins/Date/prototype/getHours/S15.9.5.18_A1_T2.js
new file mode 100644
index 0000000000..6db2368458
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getHours/S15.9.5.18_A1_T2.js
@@ -0,0 +1,19 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.prototype.gethours
+info: The Date.prototype property "getHours" has { DontEnum } attributes
+es5id: 15.9.5.18_A1_T2
+description: Checking absence of DontDelete attribute
+---*/
+assert.notSameValue(delete Date.prototype.getHours, false, 'The value of delete Date.prototype.getHours is not false');
+
+assert(
+  !Date.prototype.hasOwnProperty('getHours'),
+  'The value of !Date.prototype.hasOwnProperty(\'getHours\') is expected to be true'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getHours/S15.9.5.18_A1_T3.js b/js/src/tests/test262/built-ins/Date/prototype/getHours/S15.9.5.18_A1_T3.js
new file mode 100644
index 0000000000..2e4a4cb504
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getHours/S15.9.5.18_A1_T3.js
@@ -0,0 +1,21 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.prototype.gethours
+info: The Date.prototype property "getHours" has { DontEnum } attributes
+es5id: 15.9.5.18_A1_T3
+description: Checking DontEnum attribute
+---*/
+assert(
+  !Date.prototype.propertyIsEnumerable('getHours'),
+  'The value of !Date.prototype.propertyIsEnumerable(\'getHours\') is expected to be true'
+);
+
+for (var x in Date.prototype) {
+  assert.notSameValue(x, "getHours", 'The value of x is not "getHours"');
+}
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getHours/S15.9.5.18_A2_T1.js b/js/src/tests/test262/built-ins/Date/prototype/getHours/S15.9.5.18_A2_T1.js
new file mode 100644
index 0000000000..7a10e7fa70
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getHours/S15.9.5.18_A2_T1.js
@@ -0,0 +1,18 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.prototype.gethours
+info: The "length" property of the "getHours" is 0
+es5id: 15.9.5.18_A2_T1
+description: The "length" property of the "getHours" is 0
+---*/
+assert.sameValue(
+  Date.prototype.getHours.hasOwnProperty("length"),
+  true,
+  'Date.prototype.getHours.hasOwnProperty("length") must return true'
+);
+
+assert.sameValue(Date.prototype.getHours.length, 0, 'The value of Date.prototype.getHours.length is expected to be 0');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getHours/S15.9.5.18_A3_T1.js b/js/src/tests/test262/built-ins/Date/prototype/getHours/S15.9.5.18_A3_T1.js
new file mode 100644
index 0000000000..91895b2dc4
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getHours/S15.9.5.18_A3_T1.js
@@ -0,0 +1,25 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.prototype.gethours
+info: |
+    The Date.prototype.getHours property "length" has { ReadOnly, DontDelete,
+    DontEnum } attributes
+es5id: 15.9.5.18_A3_T1
+description: Checking ReadOnly attribute
+includes: [propertyHelper.js]
+---*/
+
+var x = Date.prototype.getHours.length;
+verifyNotWritable(Date.prototype.getHours, "length", null, 1);
+
+assert.sameValue(
+  Date.prototype.getHours.length,
+  x,
+  'The value of Date.prototype.getHours.length is expected to equal the value of x'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getHours/S15.9.5.18_A3_T2.js b/js/src/tests/test262/built-ins/Date/prototype/getHours/S15.9.5.18_A3_T2.js
new file mode 100644
index 0000000000..39c306667f
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getHours/S15.9.5.18_A3_T2.js
@@ -0,0 +1,25 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.prototype.gethours
+info: |
+    The Date.prototype.getHours property "length" has { ReadOnly, !
+    DontDelete, DontEnum } attributes
+es5id: 15.9.5.18_A3_T2
+description: Checking DontDelete attribute
+---*/
+assert.sameValue(
+  delete Date.prototype.getHours.length,
+  true,
+  'The value of `delete Date.prototype.getHours.length` is expected to be true'
+);
+
+assert(
+  !Date.prototype.getHours.hasOwnProperty('length'),
+  'The value of !Date.prototype.getHours.hasOwnProperty(\'length\') is expected to be true'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getHours/S15.9.5.18_A3_T3.js b/js/src/tests/test262/built-ins/Date/prototype/getHours/S15.9.5.18_A3_T3.js
new file mode 100644
index 0000000000..10d0865799
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getHours/S15.9.5.18_A3_T3.js
@@ -0,0 +1,23 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.prototype.gethours
+info: |
+    The Date.prototype.getHours property "length" has { ReadOnly, DontDelete,
+    DontEnum } attributes
+es5id: 15.9.5.18_A3_T3
+description: Checking DontEnum attribute
+---*/
+assert(
+  !Date.prototype.getHours.propertyIsEnumerable('length'),
+  'The value of !Date.prototype.getHours.propertyIsEnumerable(\'length\') is expected to be true'
+);
+
+for (var x in Date.prototype.getHours) {
+  assert.notSameValue(x, "length", 'The value of x is not "length"');
+}
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getHours/browser.js b/js/src/tests/test262/built-ins/Date/prototype/getHours/browser.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getHours/browser.js
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getHours/name.js b/js/src/tests/test262/built-ins/Date/prototype/getHours/name.js
new file mode 100644
index 0000000000..b775ade1e9
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getHours/name.js
@@ -0,0 +1,28 @@
+// Copyright (C) 2015 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.prototype.gethours
+description: >
+  Date.prototype.getHours.name is "getHours".
+info: |
+  Date.prototype.getHours ( )
+
+  17 ECMAScript Standard Built-in Objects:
+    Every built-in Function object, including constructors, that is not
+    identified as an anonymous function has a name property whose value
+    is a String.
+
+    Unless otherwise specified, the name property of a built-in Function
+    object, if it exists, has the attributes { [[Writable]]: false,
+    [[Enumerable]]: false, [[Configurable]]: true }.
+includes: [propertyHelper.js]
+---*/
+
+assert.sameValue(Date.prototype.getHours.name, "getHours");
+
+verifyNotEnumerable(Date.prototype.getHours, "name");
+verifyNotWritable(Date.prototype.getHours, "name");
+verifyConfigurable(Date.prototype.getHours, "name");
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getHours/not-a-constructor.js b/js/src/tests/test262/built-ins/Date/prototype/getHours/not-a-constructor.js
new file mode 100644
index 0000000000..bdb019bbee
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getHours/not-a-constructor.js
@@ -0,0 +1,35 @@
+// Copyright (C) 2020 Rick Waldron. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-ecmascript-standard-built-in-objects
+description: >
+  Date.prototype.getHours does not implement [[Construct]], is not new-able
+info: |
+  ECMAScript Function Objects
+
+  Built-in function objects that are not identified as constructors do not
+  implement the [[Construct]] internal method unless otherwise specified in
+  the description of a particular function.
+
+  sec-evaluatenew
+
+  ...
+  7. If IsConstructor(constructor) is false, throw a TypeError exception.
+  ...
+includes: [isConstructor.js]
+features: [Reflect.construct, arrow-function]
+---*/
+
+assert.sameValue(
+  isConstructor(Date.prototype.getHours),
+  false,
+  'isConstructor(Date.prototype.getHours) must return false'
+);
+
+assert.throws(TypeError, () => {
+  let date = new Date(Date.now()); new date.getHours();
+}, '`let date = new Date(Date.now()); new date.getHours()` throws TypeError');
+
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getHours/shell.js b/js/src/tests/test262/built-ins/Date/prototype/getHours/shell.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getHours/shell.js
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getHours/this-value-invalid-date.js b/js/src/tests/test262/built-ins/Date/prototype/getHours/this-value-invalid-date.js
new file mode 100644
index 0000000000..6d27ad3309
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getHours/this-value-invalid-date.js
@@ -0,0 +1,13 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.gethours
+description: Return value for invalid date
+info: |
+  1. Let t be ? thisTimeValue(this value).
+  2. If t is NaN, return NaN.
+---*/
+
+assert.sameValue(new Date(NaN).getHours(), NaN);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getHours/this-value-non-date.js b/js/src/tests/test262/built-ins/Date/prototype/getHours/this-value-non-date.js
new file mode 100644
index 0000000000..57ec097430
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getHours/this-value-non-date.js
@@ -0,0 +1,36 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.gethours
+description: >
+  Behavior when "this" value is an Object without a [[DateValue]] internal slot
+info: |
+  1. Let t be ? thisTimeValue(this value).
+
+  The abstract operation thisTimeValue(value) performs the following steps:
+
+  1. If Type(value) is Object and value has a [[DateValue]] internal slot, then
+     a. Return value.[[DateValue]].
+  2. Throw a TypeError exception.
+---*/
+
+var getHours = Date.prototype.getHours;
+var args = (function() {
+  return arguments;
+}());
+
+assert.sameValue(typeof getHours, 'function');
+
+assert.throws(TypeError, function() {
+  getHours.call({});
+}, 'ordinary object');
+
+assert.throws(TypeError, function() {
+  getHours.call([]);
+}, 'array exotic object');
+
+assert.throws(TypeError, function() {
+  getHours.call(args);
+}, 'arguments exotic object');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getHours/this-value-non-object.js b/js/src/tests/test262/built-ins/Date/prototype/getHours/this-value-non-object.js
new file mode 100644
index 0000000000..772af36457
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getHours/this-value-non-object.js
@@ -0,0 +1,46 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.gethours
+description: Behavior when "this" value is not an Object
+info: |
+  1. Let t be ? thisTimeValue(this value).
+
+  The abstract operation thisTimeValue(value) performs the following steps:
+
+  1. If Type(value) is Object and value has a [[DateValue]] internal slot, then
+     a. Return value.[[DateValue]].
+  2. Throw a TypeError exception.
+features: [Symbol]
+---*/
+
+var getHours = Date.prototype.getHours;
+var symbol = Symbol();
+
+assert.sameValue(typeof getHours, 'function');
+
+assert.throws(TypeError, function() {
+  getHours.call(0);
+}, 'number');
+
+assert.throws(TypeError, function() {
+  getHours.call(true);
+}, 'boolean');
+
+assert.throws(TypeError, function() {
+  getHours.call(null);
+}, 'null');
+
+assert.throws(TypeError, function() {
+  getHours.call(undefined);
+}, 'undefined');
+
+assert.throws(TypeError, function() {
+  getHours.call('');
+}, 'string');
+
+assert.throws(TypeError, function() {
+  getHours.call(symbol);
+}, 'symbol');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getHours/this-value-valid-date.js b/js/src/tests/test262/built-ins/Date/prototype/getHours/this-value-valid-date.js
new file mode 100644
index 0000000000..105e1434b0
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getHours/this-value-valid-date.js
@@ -0,0 +1,46 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.gethours
+description: Return value for valid dates
+info: |
+  1. Let t be ? thisTimeValue(this value).
+  2. If t is NaN, return NaN.
+  3. Return HourFromTime(LocalTime(t)).
+---*/
+
+assert.sameValue(new Date(2016, 6, 6, 13).getHours(), 13, 'first millisecond');
+assert.sameValue(
+  new Date(2016, 6, 6, 13, 0, 0, -1).getHours(), 12, 'previous millisecond'
+);
+assert.sameValue(
+  new Date(2016, 6, 6, 13, 59, 59, 999).getHours(),
+  13,
+  'final millisecond'
+);
+assert.sameValue(
+  new Date(2016, 6, 6, 13, 59, 59, 1000).getHours(),
+  14,
+  'subsequent millisecond'
+);
+
+assert.sameValue(
+  new Date(2016, 6, 6, 23).getHours(), 23, 'first millisecond (hour boundary)'
+);
+assert.sameValue(
+  new Date(2016, 6, 6, 23, 0, 0, -1).getHours(),
+  22,
+  'previous millisecond (hour boundary)'
+);
+assert.sameValue(
+  new Date(2016, 6, 6, 23, 59, 59, 999).getHours(),
+  23,
+  'final millisecond (hour boundary)'
+);
+assert.sameValue(
+  new Date(2016, 6, 6, 23, 59, 59, 1000).getHours(),
+  0,
+  'subsequent millisecond (hour boundary)'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getMilliseconds/S15.9.5.24_A1_T1.js b/js/src/tests/test262/built-ins/Date/prototype/getMilliseconds/S15.9.5.24_A1_T1.js
new file mode 100644
index 0000000000..d6ce91e98b
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getMilliseconds/S15.9.5.24_A1_T1.js
@@ -0,0 +1,26 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.prototype.getmilliseconds
+info: The Date.prototype property "getMilliseconds" has { DontEnum } attributes
+es5id: 15.9.5.24_A1_T1
+description: Checking absence of ReadOnly attribute
+---*/
+
+var x = Date.prototype.getMilliseconds;
+if (x === 1) {
+  Date.prototype.getMilliseconds = 2;
+} else {
+  Date.prototype.getMilliseconds = 1;
+}
+
+assert.notSameValue(
+  Date.prototype.getMilliseconds,
+  x,
+  'The value of Date.prototype.getMilliseconds is expected to not equal the value of `x`'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getMilliseconds/S15.9.5.24_A1_T2.js b/js/src/tests/test262/built-ins/Date/prototype/getMilliseconds/S15.9.5.24_A1_T2.js
new file mode 100644
index 0000000000..f8c8c27b8f
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getMilliseconds/S15.9.5.24_A1_T2.js
@@ -0,0 +1,23 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.prototype.getmilliseconds
+info: The Date.prototype property "getMilliseconds" has { DontEnum } attributes
+es5id: 15.9.5.24_A1_T2
+description: Checking absence of DontDelete attribute
+---*/
+assert.notSameValue(
+  delete Date.prototype.getMilliseconds,
+  false,
+  'The value of delete Date.prototype.getMilliseconds is not false'
+);
+
+assert(
+  !Date.prototype.hasOwnProperty('getMilliseconds'),
+  'The value of !Date.prototype.hasOwnProperty(\'getMilliseconds\') is expected to be true'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getMilliseconds/S15.9.5.24_A1_T3.js b/js/src/tests/test262/built-ins/Date/prototype/getMilliseconds/S15.9.5.24_A1_T3.js
new file mode 100644
index 0000000000..0f39980bce
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getMilliseconds/S15.9.5.24_A1_T3.js
@@ -0,0 +1,21 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.prototype.getmilliseconds
+info: The Date.prototype property "getMilliseconds" has { DontEnum } attributes
+es5id: 15.9.5.24_A1_T3
+description: Checking DontEnum attribute
+---*/
+assert(
+  !Date.prototype.propertyIsEnumerable('getMilliseconds'),
+  'The value of !Date.prototype.propertyIsEnumerable(\'getMilliseconds\') is expected to be true'
+);
+
+for (var x in Date.prototype) {
+  assert.notSameValue(x, "getMilliseconds", 'The value of x is not "getMilliseconds"');
+}
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getMilliseconds/S15.9.5.24_A2_T1.js b/js/src/tests/test262/built-ins/Date/prototype/getMilliseconds/S15.9.5.24_A2_T1.js
new file mode 100644
index 0000000000..84f0bba125
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getMilliseconds/S15.9.5.24_A2_T1.js
@@ -0,0 +1,22 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.prototype.getmilliseconds
+info: The "length" property of the "getMilliseconds" is 0
+es5id: 15.9.5.24_A2_T1
+description: The "length" property of the "getMilliseconds" is 0
+---*/
+assert.sameValue(
+  Date.prototype.getMilliseconds.hasOwnProperty("length"),
+  true,
+  'Date.prototype.getMilliseconds.hasOwnProperty("length") must return true'
+);
+
+assert.sameValue(
+  Date.prototype.getMilliseconds.length,
+  0,
+  'The value of Date.prototype.getMilliseconds.length is expected to be 0'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getMilliseconds/S15.9.5.24_A3_T1.js b/js/src/tests/test262/built-ins/Date/prototype/getMilliseconds/S15.9.5.24_A3_T1.js
new file mode 100644
index 0000000000..692247a28a
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getMilliseconds/S15.9.5.24_A3_T1.js
@@ -0,0 +1,25 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.prototype.getmilliseconds
+info: |
+    The Date.prototype.getMilliseconds property "length" has { ReadOnly,
+    DontDelete, DontEnum } attributes
+es5id: 15.9.5.24_A3_T1
+description: Checking ReadOnly attribute
+includes: [propertyHelper.js]
+---*/
+
+var x = Date.prototype.getMilliseconds.length;
+verifyNotWritable(Date.prototype.getMilliseconds, "length", null, 1);
+
+assert.sameValue(
+  Date.prototype.getMilliseconds.length,
+  x,
+  'The value of Date.prototype.getMilliseconds.length is expected to equal the value of x'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getMilliseconds/S15.9.5.24_A3_T2.js b/js/src/tests/test262/built-ins/Date/prototype/getMilliseconds/S15.9.5.24_A3_T2.js
new file mode 100644
index 0000000000..08208a9d9e
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getMilliseconds/S15.9.5.24_A3_T2.js
@@ -0,0 +1,25 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.prototype.getmilliseconds
+info: |
+    The Date.prototype.getMilliseconds property "length" has { ReadOnly, !
+    DontDelete, DontEnum } attributes
+es5id: 15.9.5.24_A3_T2
+description: Checking DontDelete attribute
+---*/
+assert.sameValue(
+  delete Date.prototype.getMilliseconds.length,
+  true,
+  'The value of `delete Date.prototype.getMilliseconds.length` is expected to be true'
+);
+
+assert(
+  !Date.prototype.getMilliseconds.hasOwnProperty('length'),
+  'The value of !Date.prototype.getMilliseconds.hasOwnProperty(\'length\') is expected to be true'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getMilliseconds/S15.9.5.24_A3_T3.js b/js/src/tests/test262/built-ins/Date/prototype/getMilliseconds/S15.9.5.24_A3_T3.js
new file mode 100644
index 0000000000..337e72a7e2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getMilliseconds/S15.9.5.24_A3_T3.js
@@ -0,0 +1,23 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.prototype.getmilliseconds
+info: |
+    The Date.prototype.getMilliseconds property "length" has { ReadOnly,
+    DontDelete, DontEnum } attributes
+es5id: 15.9.5.24_A3_T3
+description: Checking DontEnum attribute
+---*/
+assert(
+  !Date.prototype.getMilliseconds.propertyIsEnumerable('length'),
+  'The value of !Date.prototype.getMilliseconds.propertyIsEnumerable(\'length\') is expected to be true'
+);
+
+for (var x in Date.prototype.getMilliseconds) {
+  assert.notSameValue(x, "length", 'The value of x is not "length"');
+}
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getMilliseconds/browser.js b/js/src/tests/test262/built-ins/Date/prototype/getMilliseconds/browser.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getMilliseconds/browser.js
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getMilliseconds/name.js b/js/src/tests/test262/built-ins/Date/prototype/getMilliseconds/name.js
new file mode 100644
index 0000000000..0845a2c619
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getMilliseconds/name.js
@@ -0,0 +1,28 @@
+// Copyright (C) 2015 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.prototype.getmilliseconds
+description: >
+  Date.prototype.getMilliseconds.name is "getMilliseconds".
+info: |
+  Date.prototype.getMilliseconds ( )
+
+  17 ECMAScript Standard Built-in Objects:
+    Every built-in Function object, including constructors, that is not
+    identified as an anonymous function has a name property whose value
+    is a String.
+
+    Unless otherwise specified, the name property of a built-in Function
+    object, if it exists, has the attributes { [[Writable]]: false,
+    [[Enumerable]]: false, [[Configurable]]: true }.
+includes: [propertyHelper.js]
+---*/
+
+assert.sameValue(Date.prototype.getMilliseconds.name, "getMilliseconds");
+
+verifyNotEnumerable(Date.prototype.getMilliseconds, "name");
+verifyNotWritable(Date.prototype.getMilliseconds, "name");
+verifyConfigurable(Date.prototype.getMilliseconds, "name");
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getMilliseconds/not-a-constructor.js b/js/src/tests/test262/built-ins/Date/prototype/getMilliseconds/not-a-constructor.js
new file mode 100644
index 0000000000..4682cd3c1e
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getMilliseconds/not-a-constructor.js
@@ -0,0 +1,35 @@
+// Copyright (C) 2020 Rick Waldron. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-ecmascript-standard-built-in-objects
+description: >
+  Date.prototype.getMilliseconds does not implement [[Construct]], is not new-able
+info: |
+  ECMAScript Function Objects
+
+  Built-in function objects that are not identified as constructors do not
+  implement the [[Construct]] internal method unless otherwise specified in
+  the description of a particular function.
+
+  sec-evaluatenew
+
+  ...
+  7. If IsConstructor(constructor) is false, throw a TypeError exception.
+  ...
+includes: [isConstructor.js]
+features: [Reflect.construct, arrow-function]
+---*/
+
+assert.sameValue(
+  isConstructor(Date.prototype.getMilliseconds),
+  false,
+  'isConstructor(Date.prototype.getMilliseconds) must return false'
+);
+
+assert.throws(TypeError, () => {
+  let date = new Date(Date.now()); new date.getMilliseconds();
+}, '`let date = new Date(Date.now()); new date.getMilliseconds()` throws TypeError');
+
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getMilliseconds/shell.js b/js/src/tests/test262/built-ins/Date/prototype/getMilliseconds/shell.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getMilliseconds/shell.js
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getMilliseconds/this-value-invalid-date.js b/js/src/tests/test262/built-ins/Date/prototype/getMilliseconds/this-value-invalid-date.js
new file mode 100644
index 0000000000..9f01a58c9a
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getMilliseconds/this-value-invalid-date.js
@@ -0,0 +1,13 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.getmilliseconds
+description: Return value for invalid date
+info: |
+  1. Let t be ? thisTimeValue(this value).
+  2. If t is NaN, return NaN.
+---*/
+
+assert.sameValue(new Date(NaN).getMilliseconds(), NaN);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getMilliseconds/this-value-non-date.js b/js/src/tests/test262/built-ins/Date/prototype/getMilliseconds/this-value-non-date.js
new file mode 100644
index 0000000000..369b0e0e0f
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getMilliseconds/this-value-non-date.js
@@ -0,0 +1,36 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.getmilliseconds
+description: >
+  Behavior when "this" value is an Object without a [[DateValue]] internal slot
+info: |
+  1. Let t be ? thisTimeValue(this value).
+
+  The abstract operation thisTimeValue(value) performs the following steps:
+
+  1. If Type(value) is Object and value has a [[DateValue]] internal slot, then
+     a. Return value.[[DateValue]].
+  2. Throw a TypeError exception.
+---*/
+
+var getMilliseconds = Date.prototype.getMilliseconds;
+var args = (function() {
+  return arguments;
+}());
+
+assert.sameValue(typeof getMilliseconds, 'function');
+
+assert.throws(TypeError, function() {
+  getMilliseconds.call({});
+}, 'ordinary object');
+
+assert.throws(TypeError, function() {
+  getMilliseconds.call([]);
+}, 'array exotic object');
+
+assert.throws(TypeError, function() {
+  getMilliseconds.call(args);
+}, 'arguments exotic object');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getMilliseconds/this-value-non-object.js b/js/src/tests/test262/built-ins/Date/prototype/getMilliseconds/this-value-non-object.js
new file mode 100644
index 0000000000..e61eeb017f
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getMilliseconds/this-value-non-object.js
@@ -0,0 +1,46 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.getmilliseconds
+description: Behavior when "this" value is not an Object
+info: |
+  1. Let t be ? thisTimeValue(this value).
+
+  The abstract operation thisTimeValue(value) performs the following steps:
+
+  1. If Type(value) is Object and value has a [[DateValue]] internal slot, then
+     a. Return value.[[DateValue]].
+  2. Throw a TypeError exception.
+features: [Symbol]
+---*/
+
+var getMilliseconds = Date.prototype.getMilliseconds;
+var symbol = Symbol();
+
+assert.sameValue(typeof getMilliseconds, 'function');
+
+assert.throws(TypeError, function() {
+  getMilliseconds.call(0);
+}, 'number');
+
+assert.throws(TypeError, function() {
+  getMilliseconds.call(true);
+}, 'boolean');
+
+assert.throws(TypeError, function() {
+  getMilliseconds.call(null);
+}, 'null');
+
+assert.throws(TypeError, function() {
+  getMilliseconds.call(undefined);
+}, 'undefined');
+
+assert.throws(TypeError, function() {
+  getMilliseconds.call('');
+}, 'string');
+
+assert.throws(TypeError, function() {
+  getMilliseconds.call(symbol);
+}, 'symbol');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getMilliseconds/this-value-valid-date.js b/js/src/tests/test262/built-ins/Date/prototype/getMilliseconds/this-value-valid-date.js
new file mode 100644
index 0000000000..c5ffe86664
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getMilliseconds/this-value-valid-date.js
@@ -0,0 +1,31 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.getmilliseconds
+description: Return value for valid dates
+info: |
+  1. Let t be ? thisTimeValue(this value).
+  2. If t is NaN, return NaN.
+  3. Return msFromTime(LocalTime(t)).
+---*/
+
+assert.sameValue(
+  new Date(2016, 6, 6).getMilliseconds(), 0, 'first millisecond'
+);
+assert.sameValue(
+  new Date(2016, 6, 6, 0, 0, 0, -1).getMilliseconds(),
+  999,
+  'previous millisecond'
+);
+assert.sameValue(
+  new Date(2016, 6, 6, 23, 59, 59, 999).getMilliseconds(),
+  999,
+  'final millisecond'
+);
+assert.sameValue(
+  new Date(2016, 6, 6, 23, 59, 59, 1000).getMilliseconds(),
+  0,
+  'subsequent millisecond'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getMinutes/S15.9.5.20_A1_T1.js b/js/src/tests/test262/built-ins/Date/prototype/getMinutes/S15.9.5.20_A1_T1.js
new file mode 100644
index 0000000000..1568ec836c
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getMinutes/S15.9.5.20_A1_T1.js
@@ -0,0 +1,26 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.prototype.getminutes
+info: The Date.prototype property "getMinutes" has { DontEnum } attributes
+es5id: 15.9.5.20_A1_T1
+description: Checking absence of ReadOnly attribute
+---*/
+
+var x = Date.prototype.getMinutes;
+if (x === 1) {
+  Date.prototype.getMinutes = 2;
+} else {
+  Date.prototype.getMinutes = 1;
+}
+
+assert.notSameValue(
+  Date.prototype.getMinutes,
+  x,
+  'The value of Date.prototype.getMinutes is expected to not equal the value of `x`'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getMinutes/S15.9.5.20_A1_T2.js b/js/src/tests/test262/built-ins/Date/prototype/getMinutes/S15.9.5.20_A1_T2.js
new file mode 100644
index 0000000000..d792c65f1c
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getMinutes/S15.9.5.20_A1_T2.js
@@ -0,0 +1,23 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.prototype.getminutes
+info: The Date.prototype property "getMinutes" has { DontEnum } attributes
+es5id: 15.9.5.20_A1_T2
+description: Checking absence of DontDelete attribute
+---*/
+assert.notSameValue(
+  delete Date.prototype.getMinutes,
+  false,
+  'The value of delete Date.prototype.getMinutes is not false'
+);
+
+assert(
+  !Date.prototype.hasOwnProperty('getMinutes'),
+  'The value of !Date.prototype.hasOwnProperty(\'getMinutes\') is expected to be true'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getMinutes/S15.9.5.20_A1_T3.js b/js/src/tests/test262/built-ins/Date/prototype/getMinutes/S15.9.5.20_A1_T3.js
new file mode 100644
index 0000000000..2e79948084
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getMinutes/S15.9.5.20_A1_T3.js
@@ -0,0 +1,21 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.prototype.getminutes
+info: The Date.prototype property "getMinutes" has { DontEnum } attributes
+es5id: 15.9.5.20_A1_T3
+description: Checking DontEnum attribute
+---*/
+assert(
+  !Date.prototype.propertyIsEnumerable('getMinutes'),
+  'The value of !Date.prototype.propertyIsEnumerable(\'getMinutes\') is expected to be true'
+);
+
+for (var x in Date.prototype) {
+  assert.notSameValue(x, "getMinutes", 'The value of x is not "getMinutes"');
+}
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getMinutes/S15.9.5.20_A2_T1.js b/js/src/tests/test262/built-ins/Date/prototype/getMinutes/S15.9.5.20_A2_T1.js
new file mode 100644
index 0000000000..8a85f1211a
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getMinutes/S15.9.5.20_A2_T1.js
@@ -0,0 +1,22 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.prototype.getminutes
+info: The "length" property of the "getMinutes" is 0
+es5id: 15.9.5.20_A2_T1
+description: The "length" property of the "getMinutes" is 0
+---*/
+assert.sameValue(
+  Date.prototype.getMinutes.hasOwnProperty("length"),
+  true,
+  'Date.prototype.getMinutes.hasOwnProperty("length") must return true'
+);
+
+assert.sameValue(
+  Date.prototype.getMinutes.length,
+  0,
+  'The value of Date.prototype.getMinutes.length is expected to be 0'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getMinutes/S15.9.5.20_A3_T1.js b/js/src/tests/test262/built-ins/Date/prototype/getMinutes/S15.9.5.20_A3_T1.js
new file mode 100644
index 0000000000..19b83040f6
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getMinutes/S15.9.5.20_A3_T1.js
@@ -0,0 +1,25 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.prototype.getminutes
+info: |
+    The Date.prototype.getMinutes property "length" has { ReadOnly,
+    DontDelete, DontEnum } attributes
+es5id: 15.9.5.20_A3_T1
+description: Checking ReadOnly attribute
+includes: [propertyHelper.js]
+---*/
+
+var x = Date.prototype.getMinutes.length;
+verifyNotWritable(Date.prototype.getMinutes, "length", null, 1);
+
+assert.sameValue(
+  Date.prototype.getMinutes.length,
+  x,
+  'The value of Date.prototype.getMinutes.length is expected to equal the value of x'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getMinutes/S15.9.5.20_A3_T2.js b/js/src/tests/test262/built-ins/Date/prototype/getMinutes/S15.9.5.20_A3_T2.js
new file mode 100644
index 0000000000..c81cd920e2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getMinutes/S15.9.5.20_A3_T2.js
@@ -0,0 +1,25 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.prototype.getminutes
+info: |
+    The Date.prototype.getMinutes property "length" has { ReadOnly, !
+    DontDelete, DontEnum } attributes
+es5id: 15.9.5.20_A3_T2
+description: Checking DontDelete attribute
+---*/
+assert.sameValue(
+  delete Date.prototype.getMinutes.length,
+  true,
+  'The value of `delete Date.prototype.getMinutes.length` is expected to be true'
+);
+
+assert(
+  !Date.prototype.getMinutes.hasOwnProperty('length'),
+  'The value of !Date.prototype.getMinutes.hasOwnProperty(\'length\') is expected to be true'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getMinutes/S15.9.5.20_A3_T3.js b/js/src/tests/test262/built-ins/Date/prototype/getMinutes/S15.9.5.20_A3_T3.js
new file mode 100644
index 0000000000..d100261b04
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getMinutes/S15.9.5.20_A3_T3.js
@@ -0,0 +1,23 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.prototype.getminutes
+info: |
+    The Date.prototype.getMinutes property "length" has { ReadOnly,
+    DontDelete, DontEnum } attributes
+es5id: 15.9.5.20_A3_T3
+description: Checking DontEnum attribute
+---*/
+assert(
+  !Date.prototype.getMinutes.propertyIsEnumerable('length'),
+  'The value of !Date.prototype.getMinutes.propertyIsEnumerable(\'length\') is expected to be true'
+);
+
+for (var x in Date.prototype.getMinutes) {
+  assert.notSameValue(x, "length", 'The value of x is not "length"');
+}
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getMinutes/browser.js b/js/src/tests/test262/built-ins/Date/prototype/getMinutes/browser.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getMinutes/browser.js
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getMinutes/name.js b/js/src/tests/test262/built-ins/Date/prototype/getMinutes/name.js
new file mode 100644
index 0000000000..e1d71363bb
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getMinutes/name.js
@@ -0,0 +1,28 @@
+// Copyright (C) 2015 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.prototype.getminutes
+description: >
+  Date.prototype.getMinutes.name is "getMinutes".
+info: |
+  Date.prototype.getMinutes ( )
+
+  17 ECMAScript Standard Built-in Objects:
+    Every built-in Function object, including constructors, that is not
+    identified as an anonymous function has a name property whose value
+    is a String.
+
+    Unless otherwise specified, the name property of a built-in Function
+    object, if it exists, has the attributes { [[Writable]]: false,
+    [[Enumerable]]: false, [[Configurable]]: true }.
+includes: [propertyHelper.js]
+---*/
+
+assert.sameValue(Date.prototype.getMinutes.name, "getMinutes");
+
+verifyNotEnumerable(Date.prototype.getMinutes, "name");
+verifyNotWritable(Date.prototype.getMinutes, "name");
+verifyConfigurable(Date.prototype.getMinutes, "name");
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getMinutes/not-a-constructor.js b/js/src/tests/test262/built-ins/Date/prototype/getMinutes/not-a-constructor.js
new file mode 100644
index 0000000000..21682d79fc
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getMinutes/not-a-constructor.js
@@ -0,0 +1,35 @@
+// Copyright (C) 2020 Rick Waldron. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-ecmascript-standard-built-in-objects
+description: >
+  Date.prototype.getMinutes does not implement [[Construct]], is not new-able
+info: |
+  ECMAScript Function Objects
+
+  Built-in function objects that are not identified as constructors do not
+  implement the [[Construct]] internal method unless otherwise specified in
+  the description of a particular function.
+
+  sec-evaluatenew
+
+  ...
+  7. If IsConstructor(constructor) is false, throw a TypeError exception.
+  ...
+includes: [isConstructor.js]
+features: [Reflect.construct, arrow-function]
+---*/
+
+assert.sameValue(
+  isConstructor(Date.prototype.getMinutes),
+  false,
+  'isConstructor(Date.prototype.getMinutes) must return false'
+);
+
+assert.throws(TypeError, () => {
+  let date = new Date(Date.now()); new date.getMinutes();
+}, '`let date = new Date(Date.now()); new date.getMinutes()` throws TypeError');
+
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getMinutes/shell.js b/js/src/tests/test262/built-ins/Date/prototype/getMinutes/shell.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getMinutes/shell.js
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getMinutes/this-value-invalid-date.js b/js/src/tests/test262/built-ins/Date/prototype/getMinutes/this-value-invalid-date.js
new file mode 100644
index 0000000000..ac7436d8fe
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getMinutes/this-value-invalid-date.js
@@ -0,0 +1,13 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.getminutes
+description: Return value for invalid date
+info: |
+  1. Let t be ? thisTimeValue(this value).
+  2. If t is NaN, return NaN.
+---*/
+
+assert.sameValue(new Date(NaN).getMinutes(), NaN);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getMinutes/this-value-non-date.js b/js/src/tests/test262/built-ins/Date/prototype/getMinutes/this-value-non-date.js
new file mode 100644
index 0000000000..879db67716
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getMinutes/this-value-non-date.js
@@ -0,0 +1,36 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.getminutes
+description: >
+  Behavior when "this" value is an Object without a [[DateValue]] internal slot
+info: |
+  1. Let t be ? thisTimeValue(this value).
+
+  The abstract operation thisTimeValue(value) performs the following steps:
+
+  1. If Type(value) is Object and value has a [[DateValue]] internal slot, then
+     a. Return value.[[DateValue]].
+  2. Throw a TypeError exception.
+---*/
+
+var getMinutes = Date.prototype.getMinutes;
+var args = (function() {
+  return arguments;
+}());
+
+assert.sameValue(typeof getMinutes, 'function');
+
+assert.throws(TypeError, function() {
+  getMinutes.call({});
+}, 'ordinary object');
+
+assert.throws(TypeError, function() {
+  getMinutes.call([]);
+}, 'array exotic object');
+
+assert.throws(TypeError, function() {
+  getMinutes.call(args);
+}, 'arguments exotic object');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getMinutes/this-value-non-object.js b/js/src/tests/test262/built-ins/Date/prototype/getMinutes/this-value-non-object.js
new file mode 100644
index 0000000000..606152bf68
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getMinutes/this-value-non-object.js
@@ -0,0 +1,46 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.getminutes
+description: Behavior when "this" value is not an Object
+info: |
+  1. Let t be ? thisTimeValue(this value).
+
+  The abstract operation thisTimeValue(value) performs the following steps:
+
+  1. If Type(value) is Object and value has a [[DateValue]] internal slot, then
+     a. Return value.[[DateValue]].
+  2. Throw a TypeError exception.
+features: [Symbol]
+---*/
+
+var getMinutes = Date.prototype.getMinutes;
+var symbol = Symbol();
+
+assert.sameValue(typeof getMinutes, 'function');
+
+assert.throws(TypeError, function() {
+  getMinutes.call(0);
+}, 'number');
+
+assert.throws(TypeError, function() {
+  getMinutes.call(true);
+}, 'boolean');
+
+assert.throws(TypeError, function() {
+  getMinutes.call(null);
+}, 'null');
+
+assert.throws(TypeError, function() {
+  getMinutes.call(undefined);
+}, 'undefined');
+
+assert.throws(TypeError, function() {
+  getMinutes.call('');
+}, 'string');
+
+assert.throws(TypeError, function() {
+  getMinutes.call(symbol);
+}, 'symbol');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getMinutes/this-value-valid-date.js b/js/src/tests/test262/built-ins/Date/prototype/getMinutes/this-value-valid-date.js
new file mode 100644
index 0000000000..ded979d03c
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getMinutes/this-value-valid-date.js
@@ -0,0 +1,42 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.getminutes
+description: Return value for valid dates
+info: |
+  1. Let t be ? thisTimeValue(this value).
+  2. If t is NaN, return NaN.
+  3. Return MinFromTime(LocalTime(t)).
+---*/
+
+assert.sameValue(new Date(2016, 6, 6, 14, 6).getMinutes(), 6, 'first millisecond');
+assert.sameValue(
+  new Date(2016, 6, 6, 14, 6, 0, -1).getMinutes(), 5, 'previous millisecond'
+);
+assert.sameValue(
+  new Date(2016, 6, 6, 14, 6, 59, 999).getMinutes(), 6, 'final millisecond'
+);
+assert.sameValue(
+  new Date(2016, 6, 6, 14, 6, 59, 1000).getMinutes(), 7, 'subsequent millisecond'
+);
+
+assert.sameValue(
+  new Date(2016, 6, 6, 14, 59).getMinutes(), 59, 'first millisecond (hour boundary)'
+);
+assert.sameValue(
+  new Date(2016, 6, 6, 14, 59, 0, -1).getMinutes(),
+  58,
+  'previous millisecond (hour boundary)'
+);
+assert.sameValue(
+  new Date(2016, 6, 6, 14, 59, 59, 999).getMinutes(),
+  59,
+  'final millisecond (hour boundary)'
+);
+assert.sameValue(
+  new Date(2016, 6, 6, 14, 59, 59, 1000).getMinutes(),
+  0,
+  'subsequent millisecond (hour boundary)'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getMonth/S15.9.5.12_A1_T1.js b/js/src/tests/test262/built-ins/Date/prototype/getMonth/S15.9.5.12_A1_T1.js
new file mode 100644
index 0000000000..746c749d42
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getMonth/S15.9.5.12_A1_T1.js
@@ -0,0 +1,25 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype property "getMonth" has { DontEnum } attributes
+esid: sec-date.prototype.getmonth
+description: Checking absence of ReadOnly attribute
+---*/
+
+var x = Date.prototype.getMonth;
+if (x === 1) {
+  Date.prototype.getMonth = 2;
+} else {
+  Date.prototype.getMonth = 1;
+}
+
+assert.notSameValue(
+  Date.prototype.getMonth,
+  x,
+  'The value of Date.prototype.getMonth is expected to not equal the value of `x`'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getMonth/S15.9.5.12_A1_T2.js b/js/src/tests/test262/built-ins/Date/prototype/getMonth/S15.9.5.12_A1_T2.js
new file mode 100644
index 0000000000..d7cc73e91f
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getMonth/S15.9.5.12_A1_T2.js
@@ -0,0 +1,18 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype property "getMonth" has { DontEnum } attributes
+esid: sec-date.prototype.getmonth
+description: Checking absence of DontDelete attribute
+---*/
+assert.notSameValue(delete Date.prototype.getMonth, false, 'The value of delete Date.prototype.getMonth is not false');
+
+assert(
+  !Date.prototype.hasOwnProperty('getMonth'),
+  'The value of !Date.prototype.hasOwnProperty(\'getMonth\') is expected to be true'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getMonth/S15.9.5.12_A1_T3.js b/js/src/tests/test262/built-ins/Date/prototype/getMonth/S15.9.5.12_A1_T3.js
new file mode 100644
index 0000000000..24081e0d12
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getMonth/S15.9.5.12_A1_T3.js
@@ -0,0 +1,20 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype property "getMonth" has { DontEnum } attributes
+esid: sec-date.prototype.getmonth
+description: Checking DontEnum attribute
+---*/
+assert(
+  !Date.prototype.propertyIsEnumerable('getMonth'),
+  'The value of !Date.prototype.propertyIsEnumerable(\'getMonth\') is expected to be true'
+);
+
+for (var x in Date.prototype) {
+  assert.notSameValue(x, "getMonth", 'The value of x is not "getMonth"');
+}
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getMonth/S15.9.5.12_A2_T1.js b/js/src/tests/test262/built-ins/Date/prototype/getMonth/S15.9.5.12_A2_T1.js
new file mode 100644
index 0000000000..a7db351a63
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getMonth/S15.9.5.12_A2_T1.js
@@ -0,0 +1,17 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The "length" property of the "getMonth" is 0
+esid: sec-date.prototype.getmonth
+description: The "length" property of the "getMonth" is 0
+---*/
+assert.sameValue(
+  Date.prototype.getMonth.hasOwnProperty("length"),
+  true,
+  'Date.prototype.getMonth.hasOwnProperty("length") must return true'
+);
+
+assert.sameValue(Date.prototype.getMonth.length, 0, 'The value of Date.prototype.getMonth.length is expected to be 0');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getMonth/S15.9.5.12_A3_T1.js b/js/src/tests/test262/built-ins/Date/prototype/getMonth/S15.9.5.12_A3_T1.js
new file mode 100644
index 0000000000..7c282d67e1
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getMonth/S15.9.5.12_A3_T1.js
@@ -0,0 +1,24 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype.getMonth property "length" has { ReadOnly, DontDelete,
+    DontEnum } attributes
+esid: sec-date.prototype.getmonth
+description: Checking ReadOnly attribute
+includes: [propertyHelper.js]
+---*/
+
+var x = Date.prototype.getMonth.length;
+verifyNotWritable(Date.prototype.getMonth, "length", null, 1);
+
+assert.sameValue(
+  Date.prototype.getMonth.length,
+  x,
+  'The value of Date.prototype.getMonth.length is expected to equal the value of x'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getMonth/S15.9.5.12_A3_T2.js b/js/src/tests/test262/built-ins/Date/prototype/getMonth/S15.9.5.12_A3_T2.js
new file mode 100644
index 0000000000..b19fb31de0
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getMonth/S15.9.5.12_A3_T2.js
@@ -0,0 +1,24 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype.getMonth property "length" has { ReadOnly, !
+    DontDelete, DontEnum } attributes
+esid: sec-date.prototype.getmonth
+description: Checking DontDelete attribute
+---*/
+assert.sameValue(
+  delete Date.prototype.getMonth.length,
+  true,
+  'The value of `delete Date.prototype.getMonth.length` is expected to be true'
+);
+
+assert(
+  !Date.prototype.getMonth.hasOwnProperty('length'),
+  'The value of !Date.prototype.getMonth.hasOwnProperty(\'length\') is expected to be true'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getMonth/S15.9.5.12_A3_T3.js b/js/src/tests/test262/built-ins/Date/prototype/getMonth/S15.9.5.12_A3_T3.js
new file mode 100644
index 0000000000..05979ef2ea
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getMonth/S15.9.5.12_A3_T3.js
@@ -0,0 +1,22 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype.getMonth property "length" has { ReadOnly, DontDelete,
+    DontEnum } attributes
+esid: sec-date.prototype.getmonth
+description: Checking DontEnum attribute
+---*/
+assert(
+  !Date.prototype.getMonth.propertyIsEnumerable('length'),
+  'The value of !Date.prototype.getMonth.propertyIsEnumerable(\'length\') is expected to be true'
+);
+
+for (var x in Date.prototype.getMonth) {
+  assert.notSameValue(x, "length", 'The value of x is not "length"');
+}
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getMonth/browser.js b/js/src/tests/test262/built-ins/Date/prototype/getMonth/browser.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getMonth/browser.js
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getMonth/name.js b/js/src/tests/test262/built-ins/Date/prototype/getMonth/name.js
new file mode 100644
index 0000000000..7071c3d694
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getMonth/name.js
@@ -0,0 +1,28 @@
+// Copyright (C) 2015 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.prototype.getmonth
+description: >
+  Date.prototype.getMonth.name is "getMonth".
+info: |
+  Date.prototype.getMonth ( )
+
+  17 ECMAScript Standard Built-in Objects:
+    Every built-in Function object, including constructors, that is not
+    identified as an anonymous function has a name property whose value
+    is a String.
+
+    Unless otherwise specified, the name property of a built-in Function
+    object, if it exists, has the attributes { [[Writable]]: false,
+    [[Enumerable]]: false, [[Configurable]]: true }.
+includes: [propertyHelper.js]
+---*/
+
+assert.sameValue(Date.prototype.getMonth.name, "getMonth");
+
+verifyNotEnumerable(Date.prototype.getMonth, "name");
+verifyNotWritable(Date.prototype.getMonth, "name");
+verifyConfigurable(Date.prototype.getMonth, "name");
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getMonth/not-a-constructor.js b/js/src/tests/test262/built-ins/Date/prototype/getMonth/not-a-constructor.js
new file mode 100644
index 0000000000..53c9ac0819
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getMonth/not-a-constructor.js
@@ -0,0 +1,35 @@
+// Copyright (C) 2020 Rick Waldron. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-ecmascript-standard-built-in-objects
+description: >
+  Date.prototype.getMonth does not implement [[Construct]], is not new-able
+info: |
+  ECMAScript Function Objects
+
+  Built-in function objects that are not identified as constructors do not
+  implement the [[Construct]] internal method unless otherwise specified in
+  the description of a particular function.
+
+  sec-evaluatenew
+
+  ...
+  7. If IsConstructor(constructor) is false, throw a TypeError exception.
+  ...
+includes: [isConstructor.js]
+features: [Reflect.construct, arrow-function]
+---*/
+
+assert.sameValue(
+  isConstructor(Date.prototype.getMonth),
+  false,
+  'isConstructor(Date.prototype.getMonth) must return false'
+);
+
+assert.throws(TypeError, () => {
+  let date = new Date(Date.now()); new date.getMonth();
+}, '`let date = new Date(Date.now()); new date.getMonth()` throws TypeError');
+
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getMonth/shell.js b/js/src/tests/test262/built-ins/Date/prototype/getMonth/shell.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getMonth/shell.js
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getMonth/this-value-invalid-date.js b/js/src/tests/test262/built-ins/Date/prototype/getMonth/this-value-invalid-date.js
new file mode 100644
index 0000000000..0e7b5b9f4b
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getMonth/this-value-invalid-date.js
@@ -0,0 +1,13 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.getmonth
+description: Return value for invalid date
+info: |
+  1. Let t be ? thisTimeValue(this value).
+  2. If t is NaN, return NaN.
+---*/
+
+assert.sameValue(new Date(NaN).getMonth(), NaN);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getMonth/this-value-non-date.js b/js/src/tests/test262/built-ins/Date/prototype/getMonth/this-value-non-date.js
new file mode 100644
index 0000000000..6686d8c9e9
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getMonth/this-value-non-date.js
@@ -0,0 +1,36 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.getmonth
+description: >
+  Behavior when "this" value is an Object without a [[DateValue]] internal slot
+info: |
+  1. Let t be ? thisTimeValue(this value).
+
+  The abstract operation thisTimeValue(value) performs the following steps:
+
+  1. If Type(value) is Object and value has a [[DateValue]] internal slot, then
+     a. Return value.[[DateValue]].
+  2. Throw a TypeError exception.
+---*/
+
+var getMonth = Date.prototype.getMonth;
+var args = (function() {
+  return arguments;
+}());
+
+assert.sameValue(typeof getMonth, 'function');
+
+assert.throws(TypeError, function() {
+  getMonth.call({});
+}, 'ordinary object');
+
+assert.throws(TypeError, function() {
+  getMonth.call([]);
+}, 'array exotic object');
+
+assert.throws(TypeError, function() {
+  getMonth.call(args);
+}, 'arguments exotic object');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getMonth/this-value-non-object.js b/js/src/tests/test262/built-ins/Date/prototype/getMonth/this-value-non-object.js
new file mode 100644
index 0000000000..40b1779930
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getMonth/this-value-non-object.js
@@ -0,0 +1,46 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.getmonth
+description: Behavior when "this" value is not an Object
+info: |
+  1. Let t be ? thisTimeValue(this value).
+
+  The abstract operation thisTimeValue(value) performs the following steps:
+
+  1. If Type(value) is Object and value has a [[DateValue]] internal slot, then
+     a. Return value.[[DateValue]].
+  2. Throw a TypeError exception.
+features: [Symbol]
+---*/
+
+var getMonth = Date.prototype.getMonth;
+var symbol = Symbol();
+
+assert.sameValue(typeof getMonth, 'function');
+
+assert.throws(TypeError, function() {
+  getMonth.call(0);
+}, 'number');
+
+assert.throws(TypeError, function() {
+  getMonth.call(true);
+}, 'boolean');
+
+assert.throws(TypeError, function() {
+  getMonth.call(null);
+}, 'null');
+
+assert.throws(TypeError, function() {
+  getMonth.call(undefined);
+}, 'undefined');
+
+assert.throws(TypeError, function() {
+  getMonth.call('');
+}, 'string');
+
+assert.throws(TypeError, function() {
+  getMonth.call(symbol);
+}, 'symbol');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getMonth/this-value-valid-date.js b/js/src/tests/test262/built-ins/Date/prototype/getMonth/this-value-valid-date.js
new file mode 100644
index 0000000000..ec29f27910
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getMonth/this-value-valid-date.js
@@ -0,0 +1,42 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.getmonth
+description: Return value for valid dates
+info: |
+  1. Let t be ? thisTimeValue(this value).
+  2. If t is NaN, return NaN.
+  3. Return MonthFromTime(LocalTime(t)).
+---*/
+
+assert.sameValue(new Date(2016, 6).getMonth(), 6, 'first millisecond');
+assert.sameValue(
+  new Date(2016, 6, 0, 0, 0, 0, -1).getMonth(), 5, 'previous millisecond'
+);
+assert.sameValue(
+  new Date(2016, 6, 31, 23, 59, 59, 999).getMonth(), 6, 'final millisecond'
+);
+assert.sameValue(
+  new Date(2016, 6, 31, 23, 59, 59, 1000).getMonth(), 7, 'subsequent millisecond'
+);
+
+assert.sameValue(
+  new Date(2016, 11, 31).getMonth(), 11, 'first millisecond (year boundary)'
+);
+assert.sameValue(
+  new Date(2016, 11, 0, 0, 0, 0, -1).getMonth(),
+  10,
+  'previous millisecond (year boundary)'
+);
+assert.sameValue(
+  new Date(2016, 11, 31, 23, 59, 59, 999).getMonth(),
+  11,
+  'final millisecond (year boundary)'
+);
+assert.sameValue(
+  new Date(2016, 11, 31, 23, 59, 59, 1000).getMonth(),
+  0,
+  'subsequent millisecond (year boundary)'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getSeconds/S15.9.5.22_A1_T1.js b/js/src/tests/test262/built-ins/Date/prototype/getSeconds/S15.9.5.22_A1_T1.js
new file mode 100644
index 0000000000..b372371f87
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getSeconds/S15.9.5.22_A1_T1.js
@@ -0,0 +1,25 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype property "getSeconds" has { DontEnum } attributes
+esid: sec-date.prototype.getseconds
+description: Checking absence of ReadOnly attribute
+---*/
+
+var x = Date.prototype.getSeconds;
+if (x === 1) {
+  Date.prototype.getSeconds = 2;
+} else {
+  Date.prototype.getSeconds = 1;
+}
+
+assert.notSameValue(
+  Date.prototype.getSeconds,
+  x,
+  'The value of Date.prototype.getSeconds is expected to not equal the value of `x`'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getSeconds/S15.9.5.22_A1_T2.js b/js/src/tests/test262/built-ins/Date/prototype/getSeconds/S15.9.5.22_A1_T2.js
new file mode 100644
index 0000000000..0b096b7988
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getSeconds/S15.9.5.22_A1_T2.js
@@ -0,0 +1,22 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype property "getSeconds" has { DontEnum } attributes
+esid: sec-date.prototype.getseconds
+description: Checking absence of DontDelete attribute
+---*/
+assert.notSameValue(
+  delete Date.prototype.getSeconds,
+  false,
+  'The value of delete Date.prototype.getSeconds is not false'
+);
+
+assert(
+  !Date.prototype.hasOwnProperty('getSeconds'),
+  'The value of !Date.prototype.hasOwnProperty(\'getSeconds\') is expected to be true'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getSeconds/S15.9.5.22_A1_T3.js b/js/src/tests/test262/built-ins/Date/prototype/getSeconds/S15.9.5.22_A1_T3.js
new file mode 100644
index 0000000000..58daf773d8
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getSeconds/S15.9.5.22_A1_T3.js
@@ -0,0 +1,20 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype property "getSeconds" has { DontEnum } attributes
+esid: sec-date.prototype.getseconds
+description: Checking DontEnum attribute
+---*/
+assert(
+  !Date.prototype.propertyIsEnumerable('getSeconds'),
+  'The value of !Date.prototype.propertyIsEnumerable(\'getSeconds\') is expected to be true'
+);
+
+for (var x in Date.prototype) {
+  assert.notSameValue(x, "getSeconds", 'The value of x is not "getSeconds"');
+}
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getSeconds/S15.9.5.22_A2_T1.js b/js/src/tests/test262/built-ins/Date/prototype/getSeconds/S15.9.5.22_A2_T1.js
new file mode 100644
index 0000000000..54125a0509
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getSeconds/S15.9.5.22_A2_T1.js
@@ -0,0 +1,21 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The "length" property of the "getSeconds" is 0
+esid: sec-date.prototype.getseconds
+description: The "length" property of the "getSeconds" is 0
+---*/
+assert.sameValue(
+  Date.prototype.getSeconds.hasOwnProperty("length"),
+  true,
+  'Date.prototype.getSeconds.hasOwnProperty("length") must return true'
+);
+
+assert.sameValue(
+  Date.prototype.getSeconds.length,
+  0,
+  'The value of Date.prototype.getSeconds.length is expected to be 0'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getSeconds/S15.9.5.22_A3_T1.js b/js/src/tests/test262/built-ins/Date/prototype/getSeconds/S15.9.5.22_A3_T1.js
new file mode 100644
index 0000000000..557aa53531
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getSeconds/S15.9.5.22_A3_T1.js
@@ -0,0 +1,24 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype.getSeconds property "length" has { ReadOnly,
+    DontDelete, DontEnum } attributes
+esid: sec-date.prototype.getseconds
+description: Checking ReadOnly attribute
+includes: [propertyHelper.js]
+---*/
+
+var x = Date.prototype.getSeconds.length;
+verifyNotWritable(Date.prototype.getSeconds, "length", null, 1);
+
+assert.sameValue(
+  Date.prototype.getSeconds.length,
+  x,
+  'The value of Date.prototype.getSeconds.length is expected to equal the value of x'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getSeconds/S15.9.5.22_A3_T2.js b/js/src/tests/test262/built-ins/Date/prototype/getSeconds/S15.9.5.22_A3_T2.js
new file mode 100644
index 0000000000..cb6f6497ae
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getSeconds/S15.9.5.22_A3_T2.js
@@ -0,0 +1,24 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype.getSeconds property "length" has { ReadOnly, !
+    DontDelete, DontEnum } attributes
+esid: sec-date.prototype.getseconds
+description: Checking DontDelete attribute
+---*/
+assert.sameValue(
+  delete Date.prototype.getSeconds.length,
+  true,
+  'The value of `delete Date.prototype.getSeconds.length` is expected to be true'
+);
+
+assert(
+  !Date.prototype.getSeconds.hasOwnProperty('length'),
+  'The value of !Date.prototype.getSeconds.hasOwnProperty(\'length\') is expected to be true'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getSeconds/S15.9.5.22_A3_T3.js b/js/src/tests/test262/built-ins/Date/prototype/getSeconds/S15.9.5.22_A3_T3.js
new file mode 100644
index 0000000000..c6b40d5dba
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getSeconds/S15.9.5.22_A3_T3.js
@@ -0,0 +1,22 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype.getSeconds property "length" has { ReadOnly,
+    DontDelete, DontEnum } attributes
+esid: sec-date.prototype.getseconds
+description: Checking DontEnum attribute
+---*/
+assert(
+  !Date.prototype.getSeconds.propertyIsEnumerable('length'),
+  'The value of !Date.prototype.getSeconds.propertyIsEnumerable(\'length\') is expected to be true'
+);
+
+for (var x in Date.prototype.getSeconds) {
+  assert.notSameValue(x, "length", 'The value of x is not "length"');
+}
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getSeconds/browser.js b/js/src/tests/test262/built-ins/Date/prototype/getSeconds/browser.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getSeconds/browser.js
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getSeconds/name.js b/js/src/tests/test262/built-ins/Date/prototype/getSeconds/name.js
new file mode 100644
index 0000000000..56d30ef47f
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getSeconds/name.js
@@ -0,0 +1,28 @@
+// Copyright (C) 2015 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.prototype.getseconds
+description: >
+  Date.prototype.getSeconds.name is "getSeconds".
+info: |
+  Date.prototype.getSeconds ( )
+
+  17 ECMAScript Standard Built-in Objects:
+    Every built-in Function object, including constructors, that is not
+    identified as an anonymous function has a name property whose value
+    is a String.
+
+    Unless otherwise specified, the name property of a built-in Function
+    object, if it exists, has the attributes { [[Writable]]: false,
+    [[Enumerable]]: false, [[Configurable]]: true }.
+includes: [propertyHelper.js]
+---*/
+
+assert.sameValue(Date.prototype.getSeconds.name, "getSeconds");
+
+verifyNotEnumerable(Date.prototype.getSeconds, "name");
+verifyNotWritable(Date.prototype.getSeconds, "name");
+verifyConfigurable(Date.prototype.getSeconds, "name");
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getSeconds/not-a-constructor.js b/js/src/tests/test262/built-ins/Date/prototype/getSeconds/not-a-constructor.js
new file mode 100644
index 0000000000..cae3edd42d
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getSeconds/not-a-constructor.js
@@ -0,0 +1,35 @@
+// Copyright (C) 2020 Rick Waldron. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-ecmascript-standard-built-in-objects
+description: >
+  Date.prototype.getSeconds does not implement [[Construct]], is not new-able
+info: |
+  ECMAScript Function Objects
+
+  Built-in function objects that are not identified as constructors do not
+  implement the [[Construct]] internal method unless otherwise specified in
+  the description of a particular function.
+
+  sec-evaluatenew
+
+  ...
+  7. If IsConstructor(constructor) is false, throw a TypeError exception.
+  ...
+includes: [isConstructor.js]
+features: [Reflect.construct, arrow-function]
+---*/
+
+assert.sameValue(
+  isConstructor(Date.prototype.getSeconds),
+  false,
+  'isConstructor(Date.prototype.getSeconds) must return false'
+);
+
+assert.throws(TypeError, () => {
+  let date = new Date(Date.now()); new date.getSeconds();
+}, '`let date = new Date(Date.now()); new date.getSeconds()` throws TypeError');
+
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getSeconds/shell.js b/js/src/tests/test262/built-ins/Date/prototype/getSeconds/shell.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getSeconds/shell.js
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getSeconds/this-value-invalid-date.js b/js/src/tests/test262/built-ins/Date/prototype/getSeconds/this-value-invalid-date.js
new file mode 100644
index 0000000000..6446cd025c
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getSeconds/this-value-invalid-date.js
@@ -0,0 +1,13 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.getseconds
+description: Return value for invalid date
+info: |
+  1. Let t be ? thisTimeValue(this value).
+  2. If t is NaN, return NaN.
+---*/
+
+assert.sameValue(new Date(NaN).getSeconds(), NaN);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getSeconds/this-value-non-date.js b/js/src/tests/test262/built-ins/Date/prototype/getSeconds/this-value-non-date.js
new file mode 100644
index 0000000000..f3931afe03
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getSeconds/this-value-non-date.js
@@ -0,0 +1,36 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.getseconds
+description: >
+  Behavior when "this" value is an Object without a [[DateValue]] internal slot
+info: |
+  1. Let t be ? thisTimeValue(this value).
+
+  The abstract operation thisTimeValue(value) performs the following steps:
+
+  1. If Type(value) is Object and value has a [[DateValue]] internal slot, then
+     a. Return value.[[DateValue]].
+  2. Throw a TypeError exception.
+---*/
+
+var getSeconds = Date.prototype.getSeconds;
+var args = (function() {
+  return arguments;
+}());
+
+assert.sameValue(typeof getSeconds, 'function');
+
+assert.throws(TypeError, function() {
+  getSeconds.call({});
+}, 'ordinary object');
+
+assert.throws(TypeError, function() {
+  getSeconds.call([]);
+}, 'array exotic object');
+
+assert.throws(TypeError, function() {
+  getSeconds.call(args);
+}, 'arguments exotic object');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getSeconds/this-value-non-object.js b/js/src/tests/test262/built-ins/Date/prototype/getSeconds/this-value-non-object.js
new file mode 100644
index 0000000000..cc754be716
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getSeconds/this-value-non-object.js
@@ -0,0 +1,46 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.getseconds
+description: Behavior when "this" value is not an Object
+info: |
+  1. Let t be ? thisTimeValue(this value).
+
+  The abstract operation thisTimeValue(value) performs the following steps:
+
+  1. If Type(value) is Object and value has a [[DateValue]] internal slot, then
+     a. Return value.[[DateValue]].
+  2. Throw a TypeError exception.
+features: [Symbol]
+---*/
+
+var getSeconds = Date.prototype.getSeconds;
+var symbol = Symbol();
+
+assert.sameValue(typeof getSeconds, 'function');
+
+assert.throws(TypeError, function() {
+  getSeconds.call(0);
+}, 'number');
+
+assert.throws(TypeError, function() {
+  getSeconds.call(true);
+}, 'boolean');
+
+assert.throws(TypeError, function() {
+  getSeconds.call(null);
+}, 'null');
+
+assert.throws(TypeError, function() {
+  getSeconds.call(undefined);
+}, 'undefined');
+
+assert.throws(TypeError, function() {
+  getSeconds.call('');
+}, 'string');
+
+assert.throws(TypeError, function() {
+  getSeconds.call(symbol);
+}, 'symbol');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getSeconds/this-value-valid-date.js b/js/src/tests/test262/built-ins/Date/prototype/getSeconds/this-value-valid-date.js
new file mode 100644
index 0000000000..3bddccc6c7
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getSeconds/this-value-valid-date.js
@@ -0,0 +1,50 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.getseconds
+description: Return value for valid dates
+info: |
+  1. Let t be ? thisTimeValue(this value).
+  2. If t is NaN, return NaN.
+  3. Return SecFromTime(LocalTime(t)).
+---*/
+
+assert.sameValue(
+  new Date(2016, 6, 6, 14, 16, 30).getSeconds(),
+  30,
+  'first millisecond'
+);
+assert.sameValue(
+  new Date(2016, 6, 6, 14, 16, 30, -1).getSeconds(), 29, 'previous millisecond'
+);
+assert.sameValue(
+  new Date(2016, 6, 6, 14, 16, 30, 999).getSeconds(), 30, 'final millisecond'
+);
+assert.sameValue(
+  new Date(2016, 6, 6, 14, 16, 30, 1000).getSeconds(),
+  31,
+  'subsequent millisecond'
+);
+
+assert.sameValue(
+  new Date(2016, 6, 6, 14, 16, 59).getSeconds(),
+  59,
+  'first millisecond (minute boundary)'
+);
+assert.sameValue(
+  new Date(2016, 6, 6, 14, 16, 59, -1).getSeconds(),
+  58,
+  'previous millisecond (minute boundary)'
+);
+assert.sameValue(
+  new Date(2016, 6, 6, 14, 16, 59, 999).getSeconds(),
+  59,
+  'final millisecond (minute boundary)'
+);
+assert.sameValue(
+  new Date(2016, 6, 6, 14, 16, 59, 1000).getSeconds(),
+  0,
+  'subsequent millisecond (minute boundary)'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getTime/S15.9.5.9_A1_T1.js b/js/src/tests/test262/built-ins/Date/prototype/getTime/S15.9.5.9_A1_T1.js
new file mode 100644
index 0000000000..988395a709
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getTime/S15.9.5.9_A1_T1.js
@@ -0,0 +1,25 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype property "getTime" has { DontEnum } attributes
+esid: sec-date.prototype.getseconds
+description: Checking absence of ReadOnly attribute
+---*/
+
+var x = Date.prototype.getTime;
+if (x === 1) {
+  Date.prototype.getTime = 2;
+} else {
+  Date.prototype.getTime = 1;
+}
+
+assert.notSameValue(
+  Date.prototype.getTime,
+  x,
+  'The value of Date.prototype.getTime is expected to not equal the value of `x`'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getTime/S15.9.5.9_A1_T2.js b/js/src/tests/test262/built-ins/Date/prototype/getTime/S15.9.5.9_A1_T2.js
new file mode 100644
index 0000000000..37072a751c
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getTime/S15.9.5.9_A1_T2.js
@@ -0,0 +1,18 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype property "getTime" has { DontEnum } attributes
+esid: sec-date.prototype.getseconds
+description: Checking absence of DontDelete attribute
+---*/
+assert.notSameValue(delete Date.prototype.getTime, false, 'The value of delete Date.prototype.getTime is not false');
+
+assert(
+  !Date.prototype.hasOwnProperty('getTime'),
+  'The value of !Date.prototype.hasOwnProperty(\'getTime\') is expected to be true'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getTime/S15.9.5.9_A1_T3.js b/js/src/tests/test262/built-ins/Date/prototype/getTime/S15.9.5.9_A1_T3.js
new file mode 100644
index 0000000000..db5608efbd
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getTime/S15.9.5.9_A1_T3.js
@@ -0,0 +1,20 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype property "getTime" has { DontEnum } attributes
+esid: sec-date.prototype.getseconds
+description: Checking DontEnum attribute
+---*/
+assert(
+  !Date.prototype.propertyIsEnumerable('getTime'),
+  'The value of !Date.prototype.propertyIsEnumerable(\'getTime\') is expected to be true'
+);
+
+for (var x in Date.prototype) {
+  assert.notSameValue(x, "getTime", 'The value of x is not "getTime"');
+}
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getTime/S15.9.5.9_A2_T1.js b/js/src/tests/test262/built-ins/Date/prototype/getTime/S15.9.5.9_A2_T1.js
new file mode 100644
index 0000000000..0c5c84f24a
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getTime/S15.9.5.9_A2_T1.js
@@ -0,0 +1,17 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The "length" property of the "getTime" is 0
+esid: sec-date.prototype.getseconds
+description: The "length" property of the "getTime" is 0
+---*/
+assert.sameValue(
+  Date.prototype.getTime.hasOwnProperty("length"),
+  true,
+  'Date.prototype.getTime.hasOwnProperty("length") must return true'
+);
+
+assert.sameValue(Date.prototype.getTime.length, 0, 'The value of Date.prototype.getTime.length is expected to be 0');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getTime/S15.9.5.9_A3_T1.js b/js/src/tests/test262/built-ins/Date/prototype/getTime/S15.9.5.9_A3_T1.js
new file mode 100644
index 0000000000..05081b50ed
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getTime/S15.9.5.9_A3_T1.js
@@ -0,0 +1,24 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype.getTime property "length" has { ReadOnly, DontDelete,
+    DontEnum } attributes
+esid: sec-date.prototype.getseconds
+description: Checking ReadOnly attribute
+includes: [propertyHelper.js]
+---*/
+
+var x = Date.prototype.getTime.length;
+verifyNotWritable(Date.prototype.getTime, "length", null, 1);
+
+assert.sameValue(
+  Date.prototype.getTime.length,
+  x,
+  'The value of Date.prototype.getTime.length is expected to equal the value of x'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getTime/S15.9.5.9_A3_T2.js b/js/src/tests/test262/built-ins/Date/prototype/getTime/S15.9.5.9_A3_T2.js
new file mode 100644
index 0000000000..ef3c553cdb
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getTime/S15.9.5.9_A3_T2.js
@@ -0,0 +1,24 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype.getTime property "length" has { ReadOnly, !
+    DontDelete, DontEnum } attributes
+esid: sec-date.prototype.getseconds
+description: Checking DontDelete attribute
+---*/
+assert.sameValue(
+  delete Date.prototype.getTime.length,
+  true,
+  'The value of `delete Date.prototype.getTime.length` is expected to be true'
+);
+
+assert(
+  !Date.prototype.getTime.hasOwnProperty('length'),
+  'The value of !Date.prototype.getTime.hasOwnProperty(\'length\') is expected to be true'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getTime/S15.9.5.9_A3_T3.js b/js/src/tests/test262/built-ins/Date/prototype/getTime/S15.9.5.9_A3_T3.js
new file mode 100644
index 0000000000..3df558d0cc
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getTime/S15.9.5.9_A3_T3.js
@@ -0,0 +1,22 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype.getTime property "length" has { ReadOnly, DontDelete,
+    DontEnum } attributes
+esid: sec-date.prototype.getseconds
+description: Checking DontEnum attribute
+---*/
+assert(
+  !Date.prototype.getTime.propertyIsEnumerable('length'),
+  'The value of !Date.prototype.getTime.propertyIsEnumerable(\'length\') is expected to be true'
+);
+
+for (var x in Date.prototype.getTime) {
+  assert.notSameValue(x, "length", 'The value of x is not "length"');
+}
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getTime/browser.js b/js/src/tests/test262/built-ins/Date/prototype/getTime/browser.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getTime/browser.js
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getTime/name.js b/js/src/tests/test262/built-ins/Date/prototype/getTime/name.js
new file mode 100644
index 0000000000..3c05eb5508
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getTime/name.js
@@ -0,0 +1,28 @@
+// Copyright (C) 2015 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.prototype.getseconds
+description: >
+  Date.prototype.getTime.name is "getTime".
+info: |
+  Date.prototype.getTime ( )
+
+  17 ECMAScript Standard Built-in Objects:
+    Every built-in Function object, including constructors, that is not
+    identified as an anonymous function has a name property whose value
+    is a String.
+
+    Unless otherwise specified, the name property of a built-in Function
+    object, if it exists, has the attributes { [[Writable]]: false,
+    [[Enumerable]]: false, [[Configurable]]: true }.
+includes: [propertyHelper.js]
+---*/
+
+assert.sameValue(Date.prototype.getTime.name, "getTime");
+
+verifyNotEnumerable(Date.prototype.getTime, "name");
+verifyNotWritable(Date.prototype.getTime, "name");
+verifyConfigurable(Date.prototype.getTime, "name");
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getTime/not-a-constructor.js b/js/src/tests/test262/built-ins/Date/prototype/getTime/not-a-constructor.js
new file mode 100644
index 0000000000..31e56a6eb3
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getTime/not-a-constructor.js
@@ -0,0 +1,35 @@
+// Copyright (C) 2020 Rick Waldron. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-ecmascript-standard-built-in-objects
+description: >
+  Date.prototype.getTime does not implement [[Construct]], is not new-able
+info: |
+  ECMAScript Function Objects
+
+  Built-in function objects that are not identified as constructors do not
+  implement the [[Construct]] internal method unless otherwise specified in
+  the description of a particular function.
+
+  sec-evaluatenew
+
+  ...
+  7. If IsConstructor(constructor) is false, throw a TypeError exception.
+  ...
+includes: [isConstructor.js]
+features: [Reflect.construct, arrow-function]
+---*/
+
+assert.sameValue(
+  isConstructor(Date.prototype.getTime),
+  false,
+  'isConstructor(Date.prototype.getTime) must return false'
+);
+
+assert.throws(TypeError, () => {
+  let date = new Date(Date.now()); new date.getTime();
+}, '`let date = new Date(Date.now()); new date.getTime()` throws TypeError');
+
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getTime/shell.js b/js/src/tests/test262/built-ins/Date/prototype/getTime/shell.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getTime/shell.js
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getTime/this-value-invalid-date.js b/js/src/tests/test262/built-ins/Date/prototype/getTime/this-value-invalid-date.js
new file mode 100644
index 0000000000..a86c5a17e9
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getTime/this-value-invalid-date.js
@@ -0,0 +1,12 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.gettime
+description: Return value for invalid date
+info: |
+  1. Return ? thisTimeValue(this value). 
+---*/
+
+assert.sameValue(new Date(NaN).getTime(), NaN);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getTime/this-value-non-date.js b/js/src/tests/test262/built-ins/Date/prototype/getTime/this-value-non-date.js
new file mode 100644
index 0000000000..408bd99cd4
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getTime/this-value-non-date.js
@@ -0,0 +1,36 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.gettime
+description: >
+  Behavior when "this" value is an Object without a [[DateValue]] internal slot
+info: |
+  1. Return ? thisTimeValue(this value). 
+
+  The abstract operation thisTimeValue(value) performs the following steps:
+
+  1. If Type(value) is Object and value has a [[DateValue]] internal slot, then
+     a. Return value.[[DateValue]].
+  2. Throw a TypeError exception.
+---*/
+
+var getTime = Date.prototype.getTime;
+var args = (function() {
+  return arguments;
+}());
+
+assert.sameValue(typeof getTime, 'function');
+
+assert.throws(TypeError, function() {
+  getTime.call({});
+}, 'ordinary object');
+
+assert.throws(TypeError, function() {
+  getTime.call([]);
+}, 'array exotic object');
+
+assert.throws(TypeError, function() {
+  getTime.call(args);
+}, 'arguments exotic object');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getTime/this-value-non-object.js b/js/src/tests/test262/built-ins/Date/prototype/getTime/this-value-non-object.js
new file mode 100644
index 0000000000..8c39bcf37d
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getTime/this-value-non-object.js
@@ -0,0 +1,46 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.gettime
+description: Behavior when "this" value is not an Object
+info: |
+  1. Return ? thisTimeValue(this value). 
+
+  The abstract operation thisTimeValue(value) performs the following steps:
+
+  1. If Type(value) is Object and value has a [[DateValue]] internal slot, then
+     a. Return value.[[DateValue]].
+  2. Throw a TypeError exception.
+features: [Symbol]
+---*/
+
+var getTime = Date.prototype.getTime;
+var symbol = Symbol();
+
+assert.sameValue(typeof getTime, 'function');
+
+assert.throws(TypeError, function() {
+  getTime.call(0);
+}, 'number');
+
+assert.throws(TypeError, function() {
+  getTime.call(true);
+}, 'boolean');
+
+assert.throws(TypeError, function() {
+  getTime.call(null);
+}, 'null');
+
+assert.throws(TypeError, function() {
+  getTime.call(undefined);
+}, 'undefined');
+
+assert.throws(TypeError, function() {
+  getTime.call('');
+}, 'string');
+
+assert.throws(TypeError, function() {
+  getTime.call(symbol);
+}, 'symbol');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getTime/this-value-valid-date.js b/js/src/tests/test262/built-ins/Date/prototype/getTime/this-value-valid-date.js
new file mode 100644
index 0000000000..a72cb3adb5
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getTime/this-value-valid-date.js
@@ -0,0 +1,17 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.gettime
+description: Return value for valid dates
+info: |
+  1. Return ? thisTimeValue(this value). 
+---*/
+
+assert.sameValue(new Date(0).getTime(), 0, '+0');
+assert.sameValue(new Date(-0).getTime(), 0, '-0');
+assert.sameValue(new Date(-1).getTime(), -1);
+assert.sameValue(new Date(1).getTime(), 1);
+assert.sameValue(new Date(8640000000000000).getTime(), 8640000000000000);
+assert.sameValue(new Date(-8640000000000000).getTime(), -8640000000000000);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getTimezoneOffset/S15.9.5.26_A1_T1.js b/js/src/tests/test262/built-ins/Date/prototype/getTimezoneOffset/S15.9.5.26_A1_T1.js
new file mode 100644
index 0000000000..eb9033ac95
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getTimezoneOffset/S15.9.5.26_A1_T1.js
@@ -0,0 +1,27 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype property "getTimezoneOffset" has { DontEnum }
+    attributes
+esid: sec-date.prototype.gettimezoneoffset
+description: Checking absence of ReadOnly attribute
+---*/
+
+var x = Date.prototype.getTimezoneOffset;
+if (x === 1) {
+  Date.prototype.getTimezoneOffset = 2;
+} else {
+  Date.prototype.getTimezoneOffset = 1;
+}
+
+assert.notSameValue(
+  Date.prototype.getTimezoneOffset,
+  x,
+  'The value of Date.prototype.getTimezoneOffset is expected to not equal the value of `x`'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getTimezoneOffset/S15.9.5.26_A1_T2.js b/js/src/tests/test262/built-ins/Date/prototype/getTimezoneOffset/S15.9.5.26_A1_T2.js
new file mode 100644
index 0000000000..d5f30d46e9
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getTimezoneOffset/S15.9.5.26_A1_T2.js
@@ -0,0 +1,24 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype property "getTimezoneOffset" has { DontEnum }
+    attributes
+esid: sec-date.prototype.gettimezoneoffset
+description: Checking absence of DontDelete attribute
+---*/
+assert.notSameValue(
+  delete Date.prototype.getTimezoneOffset,
+  false,
+  'The value of delete Date.prototype.getTimezoneOffset is not false'
+);
+
+assert(
+  !Date.prototype.hasOwnProperty('getTimezoneOffset'),
+  'The value of !Date.prototype.hasOwnProperty(\'getTimezoneOffset\') is expected to be true'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getTimezoneOffset/S15.9.5.26_A1_T3.js b/js/src/tests/test262/built-ins/Date/prototype/getTimezoneOffset/S15.9.5.26_A1_T3.js
new file mode 100644
index 0000000000..e0d1ee4a14
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getTimezoneOffset/S15.9.5.26_A1_T3.js
@@ -0,0 +1,22 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype property "getTimezoneOffset" has { DontEnum }
+    attributes
+esid: sec-date.prototype.gettimezoneoffset
+description: Checking DontEnum attribute
+---*/
+assert(
+  !Date.prototype.propertyIsEnumerable('getTimezoneOffset'),
+  'The value of !Date.prototype.propertyIsEnumerable(\'getTimezoneOffset\') is expected to be true'
+);
+
+for (var x in Date.prototype) {
+  assert.notSameValue(x, "getTimezoneOffset", 'The value of x is not "getTimezoneOffset"');
+}
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getTimezoneOffset/S15.9.5.26_A2_T1.js b/js/src/tests/test262/built-ins/Date/prototype/getTimezoneOffset/S15.9.5.26_A2_T1.js
new file mode 100644
index 0000000000..8e7b596a42
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getTimezoneOffset/S15.9.5.26_A2_T1.js
@@ -0,0 +1,21 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The "length" property of the "getTimezoneOffset" is 0
+esid: sec-date.prototype.gettimezoneoffset
+description: The "length" property of the "getTimezoneOffset" is 0
+---*/
+assert.sameValue(
+  Date.prototype.getTimezoneOffset.hasOwnProperty("length"),
+  true,
+  'Date.prototype.getTimezoneOffset.hasOwnProperty("length") must return true'
+);
+
+assert.sameValue(
+  Date.prototype.getTimezoneOffset.length,
+  0,
+  'The value of Date.prototype.getTimezoneOffset.length is expected to be 0'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getTimezoneOffset/S15.9.5.26_A3_T1.js b/js/src/tests/test262/built-ins/Date/prototype/getTimezoneOffset/S15.9.5.26_A3_T1.js
new file mode 100644
index 0000000000..9996c8e550
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getTimezoneOffset/S15.9.5.26_A3_T1.js
@@ -0,0 +1,24 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype.getTimezoneOffset property "length" has { ReadOnly,
+    DontDelete, DontEnum } attributes
+esid: sec-date.prototype.gettimezoneoffset
+description: Checking ReadOnly attribute
+includes: [propertyHelper.js]
+---*/
+
+var x = Date.prototype.getTimezoneOffset.length;
+verifyNotWritable(Date.prototype.getTimezoneOffset, "length", null, 1);
+
+assert.sameValue(
+  Date.prototype.getTimezoneOffset.length,
+  x,
+  'The value of Date.prototype.getTimezoneOffset.length is expected to equal the value of x'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getTimezoneOffset/S15.9.5.26_A3_T2.js b/js/src/tests/test262/built-ins/Date/prototype/getTimezoneOffset/S15.9.5.26_A3_T2.js
new file mode 100644
index 0000000000..deeec64aa0
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getTimezoneOffset/S15.9.5.26_A3_T2.js
@@ -0,0 +1,24 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype.getTimezoneOffset property "length" has { ReadOnly, !
+    DontDelete, DontEnum } attributes
+esid: sec-date.prototype.gettimezoneoffset
+description: Checking DontDelete attribute
+---*/
+assert.sameValue(
+  delete Date.prototype.getTimezoneOffset.length,
+  true,
+  'The value of `delete Date.prototype.getTimezoneOffset.length` is expected to be true'
+);
+
+assert(
+  !Date.prototype.getTimezoneOffset.hasOwnProperty('length'),
+  'The value of !Date.prototype.getTimezoneOffset.hasOwnProperty(\'length\') is expected to be true'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getTimezoneOffset/S15.9.5.26_A3_T3.js b/js/src/tests/test262/built-ins/Date/prototype/getTimezoneOffset/S15.9.5.26_A3_T3.js
new file mode 100644
index 0000000000..3c9e7c9966
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getTimezoneOffset/S15.9.5.26_A3_T3.js
@@ -0,0 +1,22 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype.getTimezoneOffset property "length" has { ReadOnly,
+    DontDelete, DontEnum } attributes
+esid: sec-date.prototype.gettimezoneoffset
+description: Checking DontEnum attribute
+---*/
+assert(
+  !Date.prototype.getTimezoneOffset.propertyIsEnumerable('length'),
+  'The value of !Date.prototype.getTimezoneOffset.propertyIsEnumerable(\'length\') is expected to be true'
+);
+
+for (var x in Date.prototype.getTimezoneOffset) {
+  assert.notSameValue(x, "length", 'The value of x is not "length"');
+}
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getTimezoneOffset/browser.js b/js/src/tests/test262/built-ins/Date/prototype/getTimezoneOffset/browser.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getTimezoneOffset/browser.js
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getTimezoneOffset/name.js b/js/src/tests/test262/built-ins/Date/prototype/getTimezoneOffset/name.js
new file mode 100644
index 0000000000..0fe3e7046d
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getTimezoneOffset/name.js
@@ -0,0 +1,28 @@
+// Copyright (C) 2015 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.prototype.gettimezoneoffset
+description: >
+  Date.prototype.getTimezoneOffset.name is "getTimezoneOffset".
+info: |
+  Date.prototype.getTimezoneOffset ( )
+
+  17 ECMAScript Standard Built-in Objects:
+    Every built-in Function object, including constructors, that is not
+    identified as an anonymous function has a name property whose value
+    is a String.
+
+    Unless otherwise specified, the name property of a built-in Function
+    object, if it exists, has the attributes { [[Writable]]: false,
+    [[Enumerable]]: false, [[Configurable]]: true }.
+includes: [propertyHelper.js]
+---*/
+
+assert.sameValue(Date.prototype.getTimezoneOffset.name, "getTimezoneOffset");
+
+verifyNotEnumerable(Date.prototype.getTimezoneOffset, "name");
+verifyNotWritable(Date.prototype.getTimezoneOffset, "name");
+verifyConfigurable(Date.prototype.getTimezoneOffset, "name");
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getTimezoneOffset/not-a-constructor.js b/js/src/tests/test262/built-ins/Date/prototype/getTimezoneOffset/not-a-constructor.js
new file mode 100644
index 0000000000..cd1dcd6992
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getTimezoneOffset/not-a-constructor.js
@@ -0,0 +1,35 @@
+// Copyright (C) 2020 Rick Waldron. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-ecmascript-standard-built-in-objects
+description: >
+  Date.prototype.getTimezoneOffset does not implement [[Construct]], is not new-able
+info: |
+  ECMAScript Function Objects
+
+  Built-in function objects that are not identified as constructors do not
+  implement the [[Construct]] internal method unless otherwise specified in
+  the description of a particular function.
+
+  sec-evaluatenew
+
+  ...
+  7. If IsConstructor(constructor) is false, throw a TypeError exception.
+  ...
+includes: [isConstructor.js]
+features: [Reflect.construct, arrow-function]
+---*/
+
+assert.sameValue(
+  isConstructor(Date.prototype.getTimezoneOffset),
+  false,
+  'isConstructor(Date.prototype.getTimezoneOffset) must return false'
+);
+
+assert.throws(TypeError, () => {
+  let date = new Date(Date.now()); new date.getTimezoneOffset();
+}, '`let date = new Date(Date.now()); new date.getTimezoneOffset()` throws TypeError');
+
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getTimezoneOffset/shell.js b/js/src/tests/test262/built-ins/Date/prototype/getTimezoneOffset/shell.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getTimezoneOffset/shell.js
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getTimezoneOffset/this-value-invalid-date.js b/js/src/tests/test262/built-ins/Date/prototype/getTimezoneOffset/this-value-invalid-date.js
new file mode 100644
index 0000000000..d9f7baa4a6
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getTimezoneOffset/this-value-invalid-date.js
@@ -0,0 +1,13 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.gettimezoneoffset
+description: Return value for invalid date
+info: |
+  1. Let t be ? thisTimeValue(this value).
+  2. If t is NaN, return NaN.
+---*/
+
+assert.sameValue(new Date(NaN).getTimezoneOffset(), NaN);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getTimezoneOffset/this-value-non-date.js b/js/src/tests/test262/built-ins/Date/prototype/getTimezoneOffset/this-value-non-date.js
new file mode 100644
index 0000000000..70b8230839
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getTimezoneOffset/this-value-non-date.js
@@ -0,0 +1,36 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.gettimezoneoffset
+description: >
+  Behavior when "this" value is an Object without a [[DateValue]] internal slot
+info: |
+  1. Let t be ? thisTimeValue(this value).
+
+  The abstract operation thisTimeValue(value) performs the following steps:
+
+  1. If Type(value) is Object and value has a [[DateValue]] internal slot, then
+     a. Return value.[[DateValue]].
+  2. Throw a TypeError exception.
+---*/
+
+var getTimezoneOffset = Date.prototype.getTimezoneOffset;
+var args = (function() {
+  return arguments;
+}());
+
+assert.sameValue(typeof getTimezoneOffset, 'function');
+
+assert.throws(TypeError, function() {
+  getTimezoneOffset.call({});
+}, 'ordinary object');
+
+assert.throws(TypeError, function() {
+  getTimezoneOffset.call([]);
+}, 'array exotic object');
+
+assert.throws(TypeError, function() {
+  getTimezoneOffset.call(args);
+}, 'arguments exotic object');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getTimezoneOffset/this-value-non-object.js b/js/src/tests/test262/built-ins/Date/prototype/getTimezoneOffset/this-value-non-object.js
new file mode 100644
index 0000000000..ef9245450d
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getTimezoneOffset/this-value-non-object.js
@@ -0,0 +1,46 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.gettimezoneoffset
+description: Behavior when "this" value is not an Object
+info: |
+  1. Let t be ? thisTimeValue(this value).
+
+  The abstract operation thisTimeValue(value) performs the following steps:
+
+  1. If Type(value) is Object and value has a [[DateValue]] internal slot, then
+     a. Return value.[[DateValue]].
+  2. Throw a TypeError exception.
+features: [Symbol]
+---*/
+
+var getTimezoneOffset = Date.prototype.getTimezoneOffset;
+var symbol = Symbol();
+
+assert.sameValue(typeof getTimezoneOffset, 'function');
+
+assert.throws(TypeError, function() {
+  getTimezoneOffset.call(0);
+}, 'number');
+
+assert.throws(TypeError, function() {
+  getTimezoneOffset.call(true);
+}, 'boolean');
+
+assert.throws(TypeError, function() {
+  getTimezoneOffset.call(null);
+}, 'null');
+
+assert.throws(TypeError, function() {
+  getTimezoneOffset.call(undefined);
+}, 'undefined');
+
+assert.throws(TypeError, function() {
+  getTimezoneOffset.call('');
+}, 'string');
+
+assert.throws(TypeError, function() {
+  getTimezoneOffset.call(symbol);
+}, 'symbol');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getTimezoneOffset/this-value-valid-date.js b/js/src/tests/test262/built-ins/Date/prototype/getTimezoneOffset/this-value-valid-date.js
new file mode 100644
index 0000000000..bf141b1038
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getTimezoneOffset/this-value-valid-date.js
@@ -0,0 +1,32 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.gettimezoneoffset
+description: Return value for valid dates
+info: |
+  1. Let t be ? thisTimeValue(this value).
+  2. If t is NaN, return NaN.
+  3. Return (t - LocalTime(t)) / msPerMinute.
+---*/
+
+assert.sameValue(
+  typeof new Date(0).getTimezoneOffset(), 'number', 'Unix epoch'
+);
+
+assert.sameValue(
+  typeof new Date(8640000000000000).getTimezoneOffset(),
+  'number',
+  'latest representable time'
+);
+
+assert.sameValue(
+  typeof new Date(-8640000000000000).getTimezoneOffset(),
+  'number',
+  'earliest representable time'
+);
+
+assert.sameValue(
+  typeof new Date().getTimezoneOffset(), 'number', 'current time'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCDate/S15.9.5.15_A1_T1.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCDate/S15.9.5.15_A1_T1.js
new file mode 100644
index 0000000000..16aebb6fae
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCDate/S15.9.5.15_A1_T1.js
@@ -0,0 +1,25 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype property "getUTCDate" has { DontEnum } attributes
+esid: sec-date.prototype.getutcdate
+description: Checking absence of ReadOnly attribute
+---*/
+
+var x = Date.prototype.getUTCDate;
+if (x === 1) {
+  Date.prototype.getUTCDate = 2;
+} else {
+  Date.prototype.getUTCDate = 1;
+}
+
+assert.notSameValue(
+  Date.prototype.getUTCDate,
+  x,
+  'The value of Date.prototype.getUTCDate is expected to not equal the value of `x`'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCDate/S15.9.5.15_A1_T2.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCDate/S15.9.5.15_A1_T2.js
new file mode 100644
index 0000000000..b25440b9b0
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCDate/S15.9.5.15_A1_T2.js
@@ -0,0 +1,22 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype property "getUTCDate" has { DontEnum } attributes
+esid: sec-date.prototype.getutcdate
+description: Checking absence of DontDelete attribute
+---*/
+assert.notSameValue(
+  delete Date.prototype.getUTCDate,
+  false,
+  'The value of delete Date.prototype.getUTCDate is not false'
+);
+
+assert(
+  !Date.prototype.hasOwnProperty('getUTCDate'),
+  'The value of !Date.prototype.hasOwnProperty(\'getUTCDate\') is expected to be true'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCDate/S15.9.5.15_A1_T3.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCDate/S15.9.5.15_A1_T3.js
new file mode 100644
index 0000000000..48e68cc14f
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCDate/S15.9.5.15_A1_T3.js
@@ -0,0 +1,20 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype property "getUTCDate" has { DontEnum } attributes
+esid: sec-date.prototype.getutcdate
+description: Checking DontEnum attribute
+---*/
+assert(
+  !Date.prototype.propertyIsEnumerable('getUTCDate'),
+  'The value of !Date.prototype.propertyIsEnumerable(\'getUTCDate\') is expected to be true'
+);
+
+for (var x in Date.prototype) {
+  assert.notSameValue(x, "getUTCDate", 'The value of x is not "getUTCDate"');
+}
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCDate/S15.9.5.15_A2_T1.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCDate/S15.9.5.15_A2_T1.js
new file mode 100644
index 0000000000..0810fab7ce
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCDate/S15.9.5.15_A2_T1.js
@@ -0,0 +1,21 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The "length" property of the "getUTCDate" is 0
+esid: sec-date.prototype.getutcdate
+description: The "length" property of the "getUTCDate" is 0
+---*/
+assert.sameValue(
+  Date.prototype.getUTCDate.hasOwnProperty("length"),
+  true,
+  'Date.prototype.getUTCDate.hasOwnProperty("length") must return true'
+);
+
+assert.sameValue(
+  Date.prototype.getUTCDate.length,
+  0,
+  'The value of Date.prototype.getUTCDate.length is expected to be 0'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCDate/S15.9.5.15_A3_T1.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCDate/S15.9.5.15_A3_T1.js
new file mode 100644
index 0000000000..e71163dee8
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCDate/S15.9.5.15_A3_T1.js
@@ -0,0 +1,24 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype.getUTCDate property "length" has { ReadOnly,
+    DontDelete, DontEnum } attributes
+esid: sec-date.prototype.getutcdate
+description: Checking ReadOnly attribute
+includes: [propertyHelper.js]
+---*/
+
+var x = Date.prototype.getUTCDate.length;
+verifyNotWritable(Date.prototype.getUTCDate, "length", null, 1);
+
+assert.sameValue(
+  Date.prototype.getUTCDate.length,
+  x,
+  'The value of Date.prototype.getUTCDate.length is expected to equal the value of x'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCDate/S15.9.5.15_A3_T2.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCDate/S15.9.5.15_A3_T2.js
new file mode 100644
index 0000000000..e9dfd484db
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCDate/S15.9.5.15_A3_T2.js
@@ -0,0 +1,24 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype.getUTCDate property "length" has { ReadOnly, !
+    DontDelete, DontEnum } attributes
+esid: sec-date.prototype.getutcdate
+description: Checking DontDelete attribute
+---*/
+assert.sameValue(
+  delete Date.prototype.getUTCDate.length,
+  true,
+  'The value of `delete Date.prototype.getUTCDate.length` is expected to be true'
+);
+
+assert(
+  !Date.prototype.getUTCDate.hasOwnProperty('length'),
+  'The value of !Date.prototype.getUTCDate.hasOwnProperty(\'length\') is expected to be true'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCDate/S15.9.5.15_A3_T3.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCDate/S15.9.5.15_A3_T3.js
new file mode 100644
index 0000000000..17f63b8d66
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCDate/S15.9.5.15_A3_T3.js
@@ -0,0 +1,22 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype.getUTCDate property "length" has { ReadOnly,
+    DontDelete, DontEnum } attributes
+esid: sec-date.prototype.getutcdate
+description: Checking DontEnum attribute
+---*/
+assert(
+  !Date.prototype.getUTCDate.propertyIsEnumerable('length'),
+  'The value of !Date.prototype.getUTCDate.propertyIsEnumerable(\'length\') is expected to be true'
+);
+
+for (var x in Date.prototype.getUTCDate) {
+  assert.notSameValue(x, "length", 'The value of x is not "length"');
+}
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCDate/browser.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCDate/browser.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCDate/browser.js
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCDate/name.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCDate/name.js
new file mode 100644
index 0000000000..3968908ce4
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCDate/name.js
@@ -0,0 +1,28 @@
+// Copyright (C) 2015 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.prototype.getutcdate
+description: >
+  Date.prototype.getUTCDate.name is "getUTCDate".
+info: |
+  Date.prototype.getUTCDate ( )
+
+  17 ECMAScript Standard Built-in Objects:
+    Every built-in Function object, including constructors, that is not
+    identified as an anonymous function has a name property whose value
+    is a String.
+
+    Unless otherwise specified, the name property of a built-in Function
+    object, if it exists, has the attributes { [[Writable]]: false,
+    [[Enumerable]]: false, [[Configurable]]: true }.
+includes: [propertyHelper.js]
+---*/
+
+assert.sameValue(Date.prototype.getUTCDate.name, "getUTCDate");
+
+verifyNotEnumerable(Date.prototype.getUTCDate, "name");
+verifyNotWritable(Date.prototype.getUTCDate, "name");
+verifyConfigurable(Date.prototype.getUTCDate, "name");
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCDate/not-a-constructor.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCDate/not-a-constructor.js
new file mode 100644
index 0000000000..0590ac9a6e
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCDate/not-a-constructor.js
@@ -0,0 +1,35 @@
+// Copyright (C) 2020 Rick Waldron. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-ecmascript-standard-built-in-objects
+description: >
+  Date.prototype.getUTCDate does not implement [[Construct]], is not new-able
+info: |
+  ECMAScript Function Objects
+
+  Built-in function objects that are not identified as constructors do not
+  implement the [[Construct]] internal method unless otherwise specified in
+  the description of a particular function.
+
+  sec-evaluatenew
+
+  ...
+  7. If IsConstructor(constructor) is false, throw a TypeError exception.
+  ...
+includes: [isConstructor.js]
+features: [Reflect.construct, arrow-function]
+---*/
+
+assert.sameValue(
+  isConstructor(Date.prototype.getUTCDate),
+  false,
+  'isConstructor(Date.prototype.getUTCDate) must return false'
+);
+
+assert.throws(TypeError, () => {
+  let date = new Date(Date.now()); new date.getUTCDate();
+}, '`let date = new Date(Date.now()); new date.getUTCDate()` throws TypeError');
+
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCDate/shell.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCDate/shell.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCDate/shell.js
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCDate/this-value-invalid-date.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCDate/this-value-invalid-date.js
new file mode 100644
index 0000000000..1c5baf2f48
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCDate/this-value-invalid-date.js
@@ -0,0 +1,13 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.getutcdate
+description: Return value for invalid date
+info: |
+  1. Let t be ? thisTimeValue(this value).
+  2. If t is NaN, return NaN.
+---*/
+
+assert.sameValue(new Date(NaN).getUTCDate(), NaN);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCDate/this-value-non-date.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCDate/this-value-non-date.js
new file mode 100644
index 0000000000..28ed8a1c65
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCDate/this-value-non-date.js
@@ -0,0 +1,36 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.getutcdate
+description: >
+  Behavior when "this" value is an Object without a [[DateValue]] internal slot
+info: |
+  1. Let t be ? thisTimeValue(this value).
+
+  The abstract operation thisTimeValue(value) performs the following steps:
+
+  1. If Type(value) is Object and value has a [[DateValue]] internal slot, then
+     a. Return value.[[DateValue]].
+  2. Throw a TypeError exception.
+---*/
+
+var getUTCDate = Date.prototype.getUTCDate;
+var args = (function() {
+  return arguments;
+}());
+
+assert.sameValue(typeof getUTCDate, 'function');
+
+assert.throws(TypeError, function() {
+  getUTCDate.call({});
+}, 'ordinary object');
+
+assert.throws(TypeError, function() {
+  getUTCDate.call([]);
+}, 'array exotic object');
+
+assert.throws(TypeError, function() {
+  getUTCDate.call(args);
+}, 'arguments exotic object');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCDate/this-value-non-object.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCDate/this-value-non-object.js
new file mode 100644
index 0000000000..40726e54bf
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCDate/this-value-non-object.js
@@ -0,0 +1,46 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.getutcdate
+description: Behavior when "this" value is not an Object
+info: |
+  1. Let t be ? thisTimeValue(this value).
+
+  The abstract operation thisTimeValue(value) performs the following steps:
+
+  1. If Type(value) is Object and value has a [[DateValue]] internal slot, then
+     a. Return value.[[DateValue]].
+  2. Throw a TypeError exception.
+features: [Symbol]
+---*/
+
+var getUTCDate = Date.prototype.getUTCDate;
+var symbol = Symbol();
+
+assert.sameValue(typeof getUTCDate, 'function');
+
+assert.throws(TypeError, function() {
+  getUTCDate.call(0);
+}, 'number');
+
+assert.throws(TypeError, function() {
+  getUTCDate.call(true);
+}, 'boolean');
+
+assert.throws(TypeError, function() {
+  getUTCDate.call(null);
+}, 'null');
+
+assert.throws(TypeError, function() {
+  getUTCDate.call(undefined);
+}, 'undefined');
+
+assert.throws(TypeError, function() {
+  getUTCDate.call('');
+}, 'string');
+
+assert.throws(TypeError, function() {
+  getUTCDate.call(symbol);
+}, 'symbol');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCDate/this-value-valid-date.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCDate/this-value-valid-date.js
new file mode 100644
index 0000000000..87cfe7790e
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCDate/this-value-valid-date.js
@@ -0,0 +1,44 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.getutcdate
+description: Return value for valid dates
+info: |
+  1. Let t be ? thisTimeValue(this value).
+  2. If t is NaN, return NaN.
+  3. Return DateFromTime(t).
+---*/
+
+var july6 = 1467763200000;
+var feb29 = 1456704000000;
+var dayMs = 24 * 60 * 60 * 1000;
+
+assert.sameValue(new Date(july6).getUTCDate(), 6, 'first millisecond');
+assert.sameValue(
+  new Date(july6 - 1).getUTCDate(), 5, 'previous millisecond'
+);
+assert.sameValue(
+  new Date(july6 + dayMs - 1).getUTCDate(), 6, 'final millisecond'
+);
+assert.sameValue(
+  new Date(july6 + dayMs).getUTCDate(), 7, 'subsequent millisecond'
+);
+
+assert.sameValue(
+  new Date(feb29).getUTCDate(), 29, 'first millisecond (month boundary)'
+);
+assert.sameValue(
+  new Date(feb29 - 1).getUTCDate(), 28, 'previous millisecond (month boundary)'
+);
+assert.sameValue(
+  new Date(feb29 + dayMs - 1).getUTCDate(),
+  29,
+  'final millisecond (month boundary)'
+);
+assert.sameValue(
+  new Date(feb29 + dayMs).getUTCDate(),
+  1,
+  'subsequent millisecond (month boundary)'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCDay/S15.9.5.17_A1_T1.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCDay/S15.9.5.17_A1_T1.js
new file mode 100644
index 0000000000..cd9b0ff287
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCDay/S15.9.5.17_A1_T1.js
@@ -0,0 +1,25 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype property "getUTCDay" has { DontEnum } attributes
+esid: sec-date.prototype.getutcdaty
+description: Checking absence of ReadOnly attribute
+---*/
+
+var x = Date.prototype.getUTCDay;
+if (x === 1) {
+  Date.prototype.getUTCDay = 2;
+} else {
+  Date.prototype.getUTCDay = 1;
+}
+
+assert.notSameValue(
+  Date.prototype.getUTCDay,
+  x,
+  'The value of Date.prototype.getUTCDay is expected to not equal the value of `x`'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCDay/S15.9.5.17_A1_T2.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCDay/S15.9.5.17_A1_T2.js
new file mode 100644
index 0000000000..8863c901e3
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCDay/S15.9.5.17_A1_T2.js
@@ -0,0 +1,18 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype property "getUTCDay" has { DontEnum } attributes
+esid: sec-date.prototype.getutcdaty
+description: Checking absence of DontDelete attribute
+---*/
+assert.notSameValue(delete Date.prototype.getUTCDay, false, 'The value of delete Date.prototype.getUTCDay is not false');
+
+assert(
+  !Date.prototype.hasOwnProperty('getUTCDay'),
+  'The value of !Date.prototype.hasOwnProperty(\'getUTCDay\') is expected to be true'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCDay/S15.9.5.17_A1_T3.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCDay/S15.9.5.17_A1_T3.js
new file mode 100644
index 0000000000..4b29c9feef
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCDay/S15.9.5.17_A1_T3.js
@@ -0,0 +1,20 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype property "getUTCDay" has { DontEnum } attributes
+esid: sec-date.prototype.getutcdaty
+description: Checking DontEnum attribute
+---*/
+assert(
+  !Date.prototype.propertyIsEnumerable('getUTCDay'),
+  'The value of !Date.prototype.propertyIsEnumerable(\'getUTCDay\') is expected to be true'
+);
+
+for (var x in Date.prototype) {
+  assert.notSameValue(x, "getUTCDay", 'The value of x is not "getUTCDay"');
+}
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCDay/S15.9.5.17_A2_T1.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCDay/S15.9.5.17_A2_T1.js
new file mode 100644
index 0000000000..c99eb6aedc
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCDay/S15.9.5.17_A2_T1.js
@@ -0,0 +1,21 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The "length" property of the "getUTCDay" is 0
+esid: sec-date.prototype.getutcdaty
+description: The "length" property of the "getUTCDay" is 0
+---*/
+assert.sameValue(
+  Date.prototype.getUTCDay.hasOwnProperty("length"),
+  true,
+  'Date.prototype.getUTCDay.hasOwnProperty("length") must return true'
+);
+
+assert.sameValue(
+  Date.prototype.getUTCDay.length,
+  0,
+  'The value of Date.prototype.getUTCDay.length is expected to be 0'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCDay/S15.9.5.17_A3_T1.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCDay/S15.9.5.17_A3_T1.js
new file mode 100644
index 0000000000..cdfc659d5b
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCDay/S15.9.5.17_A3_T1.js
@@ -0,0 +1,24 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype.getUTCDay property "length" has { ReadOnly,
+    DontDelete, DontEnum } attributes
+esid: sec-date.prototype.getutcdaty
+description: Checking ReadOnly attribute
+includes: [propertyHelper.js]
+---*/
+
+var x = Date.prototype.getUTCDay.length;
+verifyNotWritable(Date.prototype.getUTCDay, "length", null, 1);
+
+assert.sameValue(
+  Date.prototype.getUTCDay.length,
+  x,
+  'The value of Date.prototype.getUTCDay.length is expected to equal the value of x'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCDay/S15.9.5.17_A3_T2.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCDay/S15.9.5.17_A3_T2.js
new file mode 100644
index 0000000000..0ba6464b61
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCDay/S15.9.5.17_A3_T2.js
@@ -0,0 +1,24 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype.getUTCDay property "length" has { ReadOnly, !
+    DontDelete, DontEnum } attributes
+esid: sec-date.prototype.getutcdaty
+description: Checking DontDelete attribute
+---*/
+assert.sameValue(
+  delete Date.prototype.getUTCDay.length,
+  true,
+  'The value of `delete Date.prototype.getUTCDay.length` is expected to be true'
+);
+
+assert(
+  !Date.prototype.getUTCDay.hasOwnProperty('length'),
+  'The value of !Date.prototype.getUTCDay.hasOwnProperty(\'length\') is expected to be true'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCDay/S15.9.5.17_A3_T3.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCDay/S15.9.5.17_A3_T3.js
new file mode 100644
index 0000000000..42c7b12a6d
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCDay/S15.9.5.17_A3_T3.js
@@ -0,0 +1,22 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype.getUTCDay property "length" has { ReadOnly,
+    DontDelete, DontEnum } attributes
+esid: sec-date.prototype.getutcdaty
+description: Checking DontEnum attribute
+---*/
+assert(
+  !Date.prototype.getUTCDay.propertyIsEnumerable('length'),
+  'The value of !Date.prototype.getUTCDay.propertyIsEnumerable(\'length\') is expected to be true'
+);
+
+for (var x in Date.prototype.getUTCDay) {
+  assert.notSameValue(x, "length", 'The value of x is not "length"');
+}
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCDay/browser.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCDay/browser.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCDay/browser.js
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCDay/name.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCDay/name.js
new file mode 100644
index 0000000000..280b83ed76
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCDay/name.js
@@ -0,0 +1,28 @@
+// Copyright (C) 2015 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.prototype.getutcdaty
+description: >
+  Date.prototype.getUTCDay.name is "getUTCDay".
+info: |
+  Date.prototype.getUTCDay ( )
+
+  17 ECMAScript Standard Built-in Objects:
+    Every built-in Function object, including constructors, that is not
+    identified as an anonymous function has a name property whose value
+    is a String.
+
+    Unless otherwise specified, the name property of a built-in Function
+    object, if it exists, has the attributes { [[Writable]]: false,
+    [[Enumerable]]: false, [[Configurable]]: true }.
+includes: [propertyHelper.js]
+---*/
+
+assert.sameValue(Date.prototype.getUTCDay.name, "getUTCDay");
+
+verifyNotEnumerable(Date.prototype.getUTCDay, "name");
+verifyNotWritable(Date.prototype.getUTCDay, "name");
+verifyConfigurable(Date.prototype.getUTCDay, "name");
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCDay/not-a-constructor.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCDay/not-a-constructor.js
new file mode 100644
index 0000000000..42d0a20852
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCDay/not-a-constructor.js
@@ -0,0 +1,35 @@
+// Copyright (C) 2020 Rick Waldron. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-ecmascript-standard-built-in-objects
+description: >
+  Date.prototype.getUTCDay does not implement [[Construct]], is not new-able
+info: |
+  ECMAScript Function Objects
+
+  Built-in function objects that are not identified as constructors do not
+  implement the [[Construct]] internal method unless otherwise specified in
+  the description of a particular function.
+
+  sec-evaluatenew
+
+  ...
+  7. If IsConstructor(constructor) is false, throw a TypeError exception.
+  ...
+includes: [isConstructor.js]
+features: [Reflect.construct, arrow-function]
+---*/
+
+assert.sameValue(
+  isConstructor(Date.prototype.getUTCDay),
+  false,
+  'isConstructor(Date.prototype.getUTCDay) must return false'
+);
+
+assert.throws(TypeError, () => {
+  let date = new Date(Date.now()); new date.getUTCDay();
+}, '`let date = new Date(Date.now()); new date.getUTCDay()` throws TypeError');
+
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCDay/shell.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCDay/shell.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCDay/shell.js
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCDay/this-value-invalid-date.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCDay/this-value-invalid-date.js
new file mode 100644
index 0000000000..5db81078d5
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCDay/this-value-invalid-date.js
@@ -0,0 +1,13 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.getutcday
+description: Return value for invalid date
+info: |
+  1. Let t be ? thisTimeValue(this value).
+  2. If t is NaN, return NaN.
+---*/
+
+assert.sameValue(new Date(NaN).getUTCDay(), NaN);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCDay/this-value-non-date.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCDay/this-value-non-date.js
new file mode 100644
index 0000000000..942e781079
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCDay/this-value-non-date.js
@@ -0,0 +1,36 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.getutcday
+description: >
+  Behavior when "this" value is an Object without a [[DateValue]] internal slot
+info: |
+  1. Let t be ? thisTimeValue(this value).
+
+  The abstract operation thisTimeValue(value) performs the following steps:
+
+  1. If Type(value) is Object and value has a [[DateValue]] internal slot, then
+     a. Return value.[[DateValue]].
+  2. Throw a TypeError exception.
+---*/
+
+var getUTCDay = Date.prototype.getUTCDay;
+var args = (function() {
+  return arguments;
+}());
+
+assert.sameValue(typeof getUTCDay, 'function');
+
+assert.throws(TypeError, function() {
+  getUTCDay.call({});
+}, 'ordinary object');
+
+assert.throws(TypeError, function() {
+  getUTCDay.call([]);
+}, 'array exotic object');
+
+assert.throws(TypeError, function() {
+  getUTCDay.call(args);
+}, 'arguments exotic object');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCDay/this-value-non-object.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCDay/this-value-non-object.js
new file mode 100644
index 0000000000..64f3a903e4
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCDay/this-value-non-object.js
@@ -0,0 +1,46 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.getutcdaty
+description: Behavior when "this" value is not an Object
+info: |
+  1. Let t be ? thisTimeValue(this value).
+
+  The abstract operation thisTimeValue(value) performs the following steps:
+
+  1. If Type(value) is Object and value has a [[DateValue]] internal slot, then
+     a. Return value.[[DateValue]].
+  2. Throw a TypeError exception.
+features: [Symbol]
+---*/
+
+var getUTCDay = Date.prototype.getUTCDay;
+var symbol = Symbol();
+
+assert.sameValue(typeof getUTCDay, 'function');
+
+assert.throws(TypeError, function() {
+  getUTCDay.call(0);
+}, 'number');
+
+assert.throws(TypeError, function() {
+  getUTCDay.call(true);
+}, 'boolean');
+
+assert.throws(TypeError, function() {
+  getUTCDay.call(null);
+}, 'null');
+
+assert.throws(TypeError, function() {
+  getUTCDay.call(undefined);
+}, 'undefined');
+
+assert.throws(TypeError, function() {
+  getUTCDay.call('');
+}, 'string');
+
+assert.throws(TypeError, function() {
+  getUTCDay.call(symbol);
+}, 'symbol');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCDay/this-value-valid-date.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCDay/this-value-valid-date.js
new file mode 100644
index 0000000000..8576c6bee9
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCDay/this-value-valid-date.js
@@ -0,0 +1,44 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.getutcday
+description: Return value for valid dates
+info: |
+  1. Let t be ? thisTimeValue(this value).
+  2. If t is NaN, return NaN.
+  3. Return WeekDay(t).
+---*/
+
+var july6 = 1467763200000;
+var july9 = 1468022400000;
+var dayMs = 24 * 60 * 60 * 1000;
+
+assert.sameValue(new Date(july6).getUTCDay(), 3, 'first millisecond');
+assert.sameValue(
+  new Date(july6 - 1).getUTCDay(), 2, 'previous millisecond'
+);
+assert.sameValue(
+  new Date(july6 + dayMs - 1).getUTCDay(), 3, 'final millisecond'
+);
+assert.sameValue(
+  new Date(july6 + dayMs).getUTCDay(), 4, 'subsequent millisecond'
+);
+
+assert.sameValue(
+  new Date(july9).getUTCDay(), 6, 'first millisecond (week boundary)'
+);
+assert.sameValue(
+  new Date(july9 - 1).getUTCDay(), 5, 'previous millisecond (week boundary)'
+);
+assert.sameValue(
+  new Date(july9 + dayMs - 1).getUTCDay(),
+  6,
+  'final millisecond (week boundary)'
+);
+assert.sameValue(
+  new Date(july9 + dayMs).getUTCDay(),
+  0,
+  'subsequent millisecond (week boundary)'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCFullYear/S15.9.5.11_A1_T1.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCFullYear/S15.9.5.11_A1_T1.js
new file mode 100644
index 0000000000..ef8e59efbd
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCFullYear/S15.9.5.11_A1_T1.js
@@ -0,0 +1,25 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype property "getUTCFullYear" has { DontEnum } attributes
+esid: sec-date.prototype.getutcfullyear
+description: Checking absence of ReadOnly attribute
+---*/
+
+var x = Date.prototype.getUTCFullYear;
+if (x === 1) {
+  Date.prototype.getUTCFullYear = 2;
+} else {
+  Date.prototype.getUTCFullYear = 1;
+}
+
+assert.notSameValue(
+  Date.prototype.getUTCFullYear,
+  x,
+  'The value of Date.prototype.getUTCFullYear is expected to not equal the value of `x`'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCFullYear/S15.9.5.11_A1_T2.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCFullYear/S15.9.5.11_A1_T2.js
new file mode 100644
index 0000000000..49733ea562
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCFullYear/S15.9.5.11_A1_T2.js
@@ -0,0 +1,22 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype property "getUTCFullYear" has { DontEnum } attributes
+esid: sec-date.prototype.getutcfullyear
+description: Checking absence of DontDelete attribute
+---*/
+assert.notSameValue(
+  delete Date.prototype.getUTCFullYear,
+  false,
+  'The value of delete Date.prototype.getUTCFullYear is not false'
+);
+
+assert(
+  !Date.prototype.hasOwnProperty('getUTCFullYear'),
+  'The value of !Date.prototype.hasOwnProperty(\'getUTCFullYear\') is expected to be true'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCFullYear/S15.9.5.11_A1_T3.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCFullYear/S15.9.5.11_A1_T3.js
new file mode 100644
index 0000000000..7ddec587e5
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCFullYear/S15.9.5.11_A1_T3.js
@@ -0,0 +1,20 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype property "getUTCFullYear" has { DontEnum } attributes
+esid: sec-date.prototype.getutcfullyear
+description: Checking DontEnum attribute
+---*/
+assert(
+  !Date.prototype.propertyIsEnumerable('getUTCFullYear'),
+  'The value of !Date.prototype.propertyIsEnumerable(\'getUTCFullYear\') is expected to be true'
+);
+
+for (var x in Date.prototype) {
+  assert.notSameValue(x, "getUTCFullYear", 'The value of x is not "getUTCFullYear"');
+}
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCFullYear/S15.9.5.11_A2_T1.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCFullYear/S15.9.5.11_A2_T1.js
new file mode 100644
index 0000000000..9779569d9b
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCFullYear/S15.9.5.11_A2_T1.js
@@ -0,0 +1,21 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The "length" property of the "getUTCFullYear" is 0
+esid: sec-date.prototype.getutcfullyear
+description: The "length" property of the "getUTCFullYear" is 0
+---*/
+assert.sameValue(
+  Date.prototype.getUTCFullYear.hasOwnProperty("length"),
+  true,
+  'Date.prototype.getUTCFullYear.hasOwnProperty("length") must return true'
+);
+
+assert.sameValue(
+  Date.prototype.getUTCFullYear.length,
+  0,
+  'The value of Date.prototype.getUTCFullYear.length is expected to be 0'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCFullYear/S15.9.5.11_A3_T1.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCFullYear/S15.9.5.11_A3_T1.js
new file mode 100644
index 0000000000..ae085004cc
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCFullYear/S15.9.5.11_A3_T1.js
@@ -0,0 +1,24 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype.getUTCFullYear property "length" has { ReadOnly,
+    DontDelete, DontEnum } attributes
+esid: sec-date.prototype.getutcfullyear
+description: Checking ReadOnly attribute
+includes: [propertyHelper.js]
+---*/
+
+var x = Date.prototype.getUTCFullYear.length;
+verifyNotWritable(Date.prototype.getUTCFullYear, "length", null, 1);
+
+assert.sameValue(
+  Date.prototype.getUTCFullYear.length,
+  x,
+  'The value of Date.prototype.getUTCFullYear.length is expected to equal the value of x'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCFullYear/S15.9.5.11_A3_T2.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCFullYear/S15.9.5.11_A3_T2.js
new file mode 100644
index 0000000000..8c21d6d788
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCFullYear/S15.9.5.11_A3_T2.js
@@ -0,0 +1,24 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype.getUTCFullYear property "length" has { ReadOnly, !
+    DontDelete, DontEnum } attributes
+esid: sec-date.prototype.getutcfullyear
+description: Checking DontDelete attribute
+---*/
+assert.sameValue(
+  delete Date.prototype.getUTCFullYear.length,
+  true,
+  'The value of `delete Date.prototype.getUTCFullYear.length` is expected to be true'
+);
+
+assert(
+  !Date.prototype.getUTCFullYear.hasOwnProperty('length'),
+  'The value of !Date.prototype.getUTCFullYear.hasOwnProperty(\'length\') is expected to be true'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCFullYear/S15.9.5.11_A3_T3.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCFullYear/S15.9.5.11_A3_T3.js
new file mode 100644
index 0000000000..317b78bd4f
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCFullYear/S15.9.5.11_A3_T3.js
@@ -0,0 +1,22 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype.getUTCFullYear property "length" has { ReadOnly,
+    DontDelete, DontEnum } attributes
+esid: sec-date.prototype.getutcfullyear
+description: Checking DontEnum attribute
+---*/
+assert(
+  !Date.prototype.getUTCFullYear.propertyIsEnumerable('length'),
+  'The value of !Date.prototype.getUTCFullYear.propertyIsEnumerable(\'length\') is expected to be true'
+);
+
+for (var x in Date.prototype.getUTCFullYear) {
+  assert.notSameValue(x, "length", 'The value of x is not "length"');
+}
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCFullYear/browser.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCFullYear/browser.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCFullYear/browser.js
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCFullYear/name.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCFullYear/name.js
new file mode 100644
index 0000000000..a12fcc0b98
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCFullYear/name.js
@@ -0,0 +1,28 @@
+// Copyright (C) 2015 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.prototype.getutcfullyear
+description: >
+  Date.prototype.getUTCFullYear.name is "getUTCFullYear".
+info: |
+  Date.prototype.getUTCFullYear ( )
+
+  17 ECMAScript Standard Built-in Objects:
+    Every built-in Function object, including constructors, that is not
+    identified as an anonymous function has a name property whose value
+    is a String.
+
+    Unless otherwise specified, the name property of a built-in Function
+    object, if it exists, has the attributes { [[Writable]]: false,
+    [[Enumerable]]: false, [[Configurable]]: true }.
+includes: [propertyHelper.js]
+---*/
+
+assert.sameValue(Date.prototype.getUTCFullYear.name, "getUTCFullYear");
+
+verifyNotEnumerable(Date.prototype.getUTCFullYear, "name");
+verifyNotWritable(Date.prototype.getUTCFullYear, "name");
+verifyConfigurable(Date.prototype.getUTCFullYear, "name");
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCFullYear/not-a-constructor.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCFullYear/not-a-constructor.js
new file mode 100644
index 0000000000..6baf587e38
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCFullYear/not-a-constructor.js
@@ -0,0 +1,35 @@
+// Copyright (C) 2020 Rick Waldron. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-ecmascript-standard-built-in-objects
+description: >
+  Date.prototype.getUTCFullYear does not implement [[Construct]], is not new-able
+info: |
+  ECMAScript Function Objects
+
+  Built-in function objects that are not identified as constructors do not
+  implement the [[Construct]] internal method unless otherwise specified in
+  the description of a particular function.
+
+  sec-evaluatenew
+
+  ...
+  7. If IsConstructor(constructor) is false, throw a TypeError exception.
+  ...
+includes: [isConstructor.js]
+features: [Reflect.construct, arrow-function]
+---*/
+
+assert.sameValue(
+  isConstructor(Date.prototype.getUTCFullYear),
+  false,
+  'isConstructor(Date.prototype.getUTCFullYear) must return false'
+);
+
+assert.throws(TypeError, () => {
+  let date = new Date(Date.now()); new date.getUTCFullYear();
+}, '`let date = new Date(Date.now()); new date.getUTCFullYear()` throws TypeError');
+
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCFullYear/shell.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCFullYear/shell.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCFullYear/shell.js
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCFullYear/this-value-invalid-date.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCFullYear/this-value-invalid-date.js
new file mode 100644
index 0000000000..53365be35d
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCFullYear/this-value-invalid-date.js
@@ -0,0 +1,13 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.getutcfullyear
+description: Return value for invalid date
+info: |
+  1. Let t be ? thisTimeValue(this value).
+  2. If t is NaN, return NaN.
+---*/
+
+assert.sameValue(new Date(NaN).getUTCFullYear(), NaN);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCFullYear/this-value-non-date.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCFullYear/this-value-non-date.js
new file mode 100644
index 0000000000..911da2c6a2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCFullYear/this-value-non-date.js
@@ -0,0 +1,36 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.getutcfullyear
+description: >
+  Behavior when "this" value is an Object without a [[DateValue]] internal slot
+info: |
+  1. Let t be ? thisTimeValue(this value).
+
+  The abstract operation thisTimeValue(value) performs the following steps:
+
+  1. If Type(value) is Object and value has a [[DateValue]] internal slot, then
+     a. Return value.[[DateValue]].
+  2. Throw a TypeError exception.
+---*/
+
+var getUTCFullYear = Date.prototype.getUTCFullYear;
+var args = (function() {
+  return arguments;
+}());
+
+assert.sameValue(typeof getUTCFullYear, 'function');
+
+assert.throws(TypeError, function() {
+  getUTCFullYear.call({});
+}, 'ordinary object');
+
+assert.throws(TypeError, function() {
+  getUTCFullYear.call([]);
+}, 'array exotic object');
+
+assert.throws(TypeError, function() {
+  getUTCFullYear.call(args);
+}, 'arguments exotic object');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCFullYear/this-value-non-object.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCFullYear/this-value-non-object.js
new file mode 100644
index 0000000000..67e4215d61
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCFullYear/this-value-non-object.js
@@ -0,0 +1,46 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.getutcfullyear
+description: Behavior when "this" value is not an Object
+info: |
+  1. Let t be ? thisTimeValue(this value).
+
+  The abstract operation thisTimeValue(value) performs the following steps:
+
+  1. If Type(value) is Object and value has a [[DateValue]] internal slot, then
+     a. Return value.[[DateValue]].
+  2. Throw a TypeError exception.
+features: [Symbol]
+---*/
+
+var getUTCFullYear = Date.prototype.getUTCFullYear;
+var symbol = Symbol();
+
+assert.sameValue(typeof getUTCFullYear, 'function');
+
+assert.throws(TypeError, function() {
+  getUTCFullYear.call(0);
+}, 'number');
+
+assert.throws(TypeError, function() {
+  getUTCFullYear.call(true);
+}, 'boolean');
+
+assert.throws(TypeError, function() {
+  getUTCFullYear.call(null);
+}, 'null');
+
+assert.throws(TypeError, function() {
+  getUTCFullYear.call(undefined);
+}, 'undefined');
+
+assert.throws(TypeError, function() {
+  getUTCFullYear.call('');
+}, 'string');
+
+assert.throws(TypeError, function() {
+  getUTCFullYear.call(symbol);
+}, 'symbol');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCFullYear/this-value-valid-date.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCFullYear/this-value-valid-date.js
new file mode 100644
index 0000000000..9ed72bf248
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCFullYear/this-value-valid-date.js
@@ -0,0 +1,26 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.getutcfullyear
+description: Return value for valid dates
+info: |
+  1. Let t be ? thisTimeValue(this value).
+  2. If t is NaN, return NaN.
+  3. Return YearFromTime(t).
+---*/
+
+var dec31 = 1483142400000;
+var dayMs = 24 * 60 * 60 * 1000;
+
+assert.sameValue(new Date(dec31).getUTCFullYear(), 2016, 'first millisecond');
+assert.sameValue(
+  new Date(dec31 - 1).getUTCFullYear(), 2016, 'previous millisecond'
+);
+assert.sameValue(
+  new Date(dec31 + dayMs - 1).getUTCFullYear(), 2016, 'final millisecond'
+);
+assert.sameValue(
+  new Date(dec31 + dayMs).getUTCFullYear(), 2017, 'subsequent millisecond'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCHours/S15.9.5.19_A1_T1.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCHours/S15.9.5.19_A1_T1.js
new file mode 100644
index 0000000000..c3dc2fec3f
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCHours/S15.9.5.19_A1_T1.js
@@ -0,0 +1,25 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype property "getUTCHours" has { DontEnum } attributes
+esid: sec-date.prototype.getutchours
+description: Checking absence of ReadOnly attribute
+---*/
+
+var x = Date.prototype.getUTCHours;
+if (x === 1) {
+  Date.prototype.getUTCHours = 2;
+} else {
+  Date.prototype.getUTCHours = 1;
+}
+
+assert.notSameValue(
+  Date.prototype.getUTCHours,
+  x,
+  'The value of Date.prototype.getUTCHours is expected to not equal the value of `x`'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCHours/S15.9.5.19_A1_T2.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCHours/S15.9.5.19_A1_T2.js
new file mode 100644
index 0000000000..391e4c9ae6
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCHours/S15.9.5.19_A1_T2.js
@@ -0,0 +1,22 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype property "getUTCHours" has { DontEnum } attributes
+esid: sec-date.prototype.getutchours
+description: Checking absence of DontDelete attribute
+---*/
+assert.notSameValue(
+  delete Date.prototype.getUTCHours,
+  false,
+  'The value of delete Date.prototype.getUTCHours is not false'
+);
+
+assert(
+  !Date.prototype.hasOwnProperty('getUTCHours'),
+  'The value of !Date.prototype.hasOwnProperty(\'getUTCHours\') is expected to be true'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCHours/S15.9.5.19_A1_T3.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCHours/S15.9.5.19_A1_T3.js
new file mode 100644
index 0000000000..881e02a43a
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCHours/S15.9.5.19_A1_T3.js
@@ -0,0 +1,20 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype property "getUTCHours" has { DontEnum } attributes
+esid: sec-date.prototype.getutchours
+description: Checking DontEnum attribute
+---*/
+assert(
+  !Date.prototype.propertyIsEnumerable('getUTCHours'),
+  'The value of !Date.prototype.propertyIsEnumerable(\'getUTCHours\') is expected to be true'
+);
+
+for (var x in Date.prototype) {
+  assert.notSameValue(x, "getUTCHours", 'The value of x is not "getUTCHours"');
+}
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCHours/S15.9.5.19_A2_T1.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCHours/S15.9.5.19_A2_T1.js
new file mode 100644
index 0000000000..8fc7619ec2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCHours/S15.9.5.19_A2_T1.js
@@ -0,0 +1,21 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The "length" property of the "getUTCHours" is 0
+esid: sec-date.prototype.getutchours
+description: The "length" property of the "getUTCHours" is 0
+---*/
+assert.sameValue(
+  Date.prototype.getUTCHours.hasOwnProperty("length"),
+  true,
+  'Date.prototype.getUTCHours.hasOwnProperty("length") must return true'
+);
+
+assert.sameValue(
+  Date.prototype.getUTCHours.length,
+  0,
+  'The value of Date.prototype.getUTCHours.length is expected to be 0'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCHours/S15.9.5.19_A3_T1.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCHours/S15.9.5.19_A3_T1.js
new file mode 100644
index 0000000000..17c8d64a95
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCHours/S15.9.5.19_A3_T1.js
@@ -0,0 +1,24 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype.getUTCHours property "length" has { ReadOnly,
+    DontDelete, DontEnum } attributes
+esid: sec-date.prototype.getutchours
+description: Checking ReadOnly attribute
+includes: [propertyHelper.js]
+---*/
+
+var x = Date.prototype.getUTCHours.length;
+verifyNotWritable(Date.prototype.getUTCHours, "length", null, 1);
+
+assert.sameValue(
+  Date.prototype.getUTCHours.length,
+  x,
+  'The value of Date.prototype.getUTCHours.length is expected to equal the value of x'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCHours/S15.9.5.19_A3_T2.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCHours/S15.9.5.19_A3_T2.js
new file mode 100644
index 0000000000..b7bbcdcfdb
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCHours/S15.9.5.19_A3_T2.js
@@ -0,0 +1,24 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype.getUTCHours property "length" has { ReadOnly, !
+    DontDelete, DontEnum } attributes
+esid: sec-date.prototype.getutchours
+description: Checking DontDelete attribute
+---*/
+assert.sameValue(
+  delete Date.prototype.getUTCHours.length,
+  true,
+  'The value of `delete Date.prototype.getUTCHours.length` is expected to be true'
+);
+
+assert(
+  !Date.prototype.getUTCHours.hasOwnProperty('length'),
+  'The value of !Date.prototype.getUTCHours.hasOwnProperty(\'length\') is expected to be true'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCHours/S15.9.5.19_A3_T3.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCHours/S15.9.5.19_A3_T3.js
new file mode 100644
index 0000000000..d56f7edbef
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCHours/S15.9.5.19_A3_T3.js
@@ -0,0 +1,22 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype.getUTCHours property "length" has { ReadOnly,
+    DontDelete, DontEnum } attributes
+esid: sec-date.prototype.getutchours
+description: Checking DontEnum attribute
+---*/
+assert(
+  !Date.prototype.getUTCHours.propertyIsEnumerable('length'),
+  'The value of !Date.prototype.getUTCHours.propertyIsEnumerable(\'length\') is expected to be true'
+);
+
+for (var x in Date.prototype.getUTCHours) {
+  assert.notSameValue(x, "length", 'The value of x is not "length"');
+}
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCHours/browser.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCHours/browser.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCHours/browser.js
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCHours/name.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCHours/name.js
new file mode 100644
index 0000000000..d35e74baa5
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCHours/name.js
@@ -0,0 +1,28 @@
+// Copyright (C) 2015 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.prototype.getutchours
+description: >
+  Date.prototype.getUTCHours.name is "getUTCHours".
+info: |
+  Date.prototype.getUTCHours ( )
+
+  17 ECMAScript Standard Built-in Objects:
+    Every built-in Function object, including constructors, that is not
+    identified as an anonymous function has a name property whose value
+    is a String.
+
+    Unless otherwise specified, the name property of a built-in Function
+    object, if it exists, has the attributes { [[Writable]]: false,
+    [[Enumerable]]: false, [[Configurable]]: true }.
+includes: [propertyHelper.js]
+---*/
+
+assert.sameValue(Date.prototype.getUTCHours.name, "getUTCHours");
+
+verifyNotEnumerable(Date.prototype.getUTCHours, "name");
+verifyNotWritable(Date.prototype.getUTCHours, "name");
+verifyConfigurable(Date.prototype.getUTCHours, "name");
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCHours/not-a-constructor.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCHours/not-a-constructor.js
new file mode 100644
index 0000000000..60ed6e667f
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCHours/not-a-constructor.js
@@ -0,0 +1,35 @@
+// Copyright (C) 2020 Rick Waldron. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-ecmascript-standard-built-in-objects
+description: >
+  Date.prototype.getUTCHours does not implement [[Construct]], is not new-able
+info: |
+  ECMAScript Function Objects
+
+  Built-in function objects that are not identified as constructors do not
+  implement the [[Construct]] internal method unless otherwise specified in
+  the description of a particular function.
+
+  sec-evaluatenew
+
+  ...
+  7. If IsConstructor(constructor) is false, throw a TypeError exception.
+  ...
+includes: [isConstructor.js]
+features: [Reflect.construct, arrow-function]
+---*/
+
+assert.sameValue(
+  isConstructor(Date.prototype.getUTCHours),
+  false,
+  'isConstructor(Date.prototype.getUTCHours) must return false'
+);
+
+assert.throws(TypeError, () => {
+  let date = new Date(Date.now()); new date.getUTCHours();
+}, '`let date = new Date(Date.now()); new date.getUTCHours()` throws TypeError');
+
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCHours/shell.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCHours/shell.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCHours/shell.js
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCHours/this-value-invalid-date.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCHours/this-value-invalid-date.js
new file mode 100644
index 0000000000..435093209c
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCHours/this-value-invalid-date.js
@@ -0,0 +1,13 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.getutchours
+description: Return value for invalid date
+info: |
+  1. Let t be ? thisTimeValue(this value).
+  2. If t is NaN, return NaN.
+---*/
+
+assert.sameValue(new Date(NaN).getUTCHours(), NaN);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCHours/this-value-non-date.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCHours/this-value-non-date.js
new file mode 100644
index 0000000000..1158d6a6ff
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCHours/this-value-non-date.js
@@ -0,0 +1,36 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.getutchours
+description: >
+  Behavior when "this" value is an Object without a [[DateValue]] internal slot
+info: |
+  1. Let t be ? thisTimeValue(this value).
+
+  The abstract operation thisTimeValue(value) performs the following steps:
+
+  1. If Type(value) is Object and value has a [[DateValue]] internal slot, then
+     a. Return value.[[DateValue]].
+  2. Throw a TypeError exception.
+---*/
+
+var getUTCHours = Date.prototype.getUTCHours;
+var args = (function() {
+  return arguments;
+}());
+
+assert.sameValue(typeof getUTCHours, 'function');
+
+assert.throws(TypeError, function() {
+  getUTCHours.call({});
+}, 'ordinary object');
+
+assert.throws(TypeError, function() {
+  getUTCHours.call([]);
+}, 'array exotic object');
+
+assert.throws(TypeError, function() {
+  getUTCHours.call(args);
+}, 'arguments exotic object');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCHours/this-value-non-object.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCHours/this-value-non-object.js
new file mode 100644
index 0000000000..fea152d46a
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCHours/this-value-non-object.js
@@ -0,0 +1,46 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.getutchours
+description: Behavior when "this" value is not an Object
+info: |
+  1. Let t be ? thisTimeValue(this value).
+
+  The abstract operation thisTimeValue(value) performs the following steps:
+
+  1. If Type(value) is Object and value has a [[DateValue]] internal slot, then
+     a. Return value.[[DateValue]].
+  2. Throw a TypeError exception.
+features: [Symbol]
+---*/
+
+var getUTCHours = Date.prototype.getUTCHours;
+var symbol = Symbol();
+
+assert.sameValue(typeof getUTCHours, 'function');
+
+assert.throws(TypeError, function() {
+  getUTCHours.call(0);
+}, 'number');
+
+assert.throws(TypeError, function() {
+  getUTCHours.call(true);
+}, 'boolean');
+
+assert.throws(TypeError, function() {
+  getUTCHours.call(null);
+}, 'null');
+
+assert.throws(TypeError, function() {
+  getUTCHours.call(undefined);
+}, 'undefined');
+
+assert.throws(TypeError, function() {
+  getUTCHours.call('');
+}, 'string');
+
+assert.throws(TypeError, function() {
+  getUTCHours.call(symbol);
+}, 'symbol');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCHours/this-value-valid-date.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCHours/this-value-valid-date.js
new file mode 100644
index 0000000000..19157cf787
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCHours/this-value-valid-date.js
@@ -0,0 +1,44 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.getutchours
+description: Return value for valid dates
+info: |
+  1. Let t be ? thisTimeValue(this value).
+  2. If t is NaN, return NaN.
+  3. Return HourFromTime(t).
+---*/
+
+var hour15 = 1467817200000;
+var hour23 = 1467846000000;
+var hourMs = 60 * 60 * 1000;
+
+assert.sameValue(new Date(hour15).getUTCHours(), 15, 'first millisecond');
+assert.sameValue(
+  new Date(hour15 - 1).getUTCHours(), 14, 'previous millisecond'
+);
+assert.sameValue(
+  new Date(hour15 + hourMs - 1).getUTCHours(), 15, 'final millisecond'
+);
+assert.sameValue(
+  new Date(hour15 + hourMs).getUTCHours(), 16, 'subsequent millisecond'
+);
+
+assert.sameValue(
+  new Date(hour23).getUTCHours(), 23, 'first millisecond (day boundary)'
+);
+assert.sameValue(
+  new Date(hour23 - 1).getUTCHours(), 22, 'previous millisecond (day boundary)'
+);
+assert.sameValue(
+  new Date(hour23 + hourMs - 1).getUTCHours(),
+  23,
+  'final millisecond (day boundary)'
+);
+assert.sameValue(
+  new Date(hour23 + hourMs).getUTCHours(),
+  0,
+  'subsequent millisecond (day boundary)'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCMilliseconds/S15.9.5.25_A1_T1.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCMilliseconds/S15.9.5.25_A1_T1.js
new file mode 100644
index 0000000000..d9028f85d4
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCMilliseconds/S15.9.5.25_A1_T1.js
@@ -0,0 +1,27 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype property "getUTCMilliseconds" has { DontEnum }
+    attributes
+esid: sec-date.prototype.getutcmilliseconds
+description: Checking absence of ReadOnly attribute
+---*/
+
+var x = Date.prototype.getUTCMilliseconds;
+if (x === 1) {
+  Date.prototype.getUTCMilliseconds = 2;
+} else {
+  Date.prototype.getUTCMilliseconds = 1;
+}
+
+assert.notSameValue(
+  Date.prototype.getUTCMilliseconds,
+  x,
+  'The value of Date.prototype.getUTCMilliseconds is expected to not equal the value of `x`'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCMilliseconds/S15.9.5.25_A1_T2.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCMilliseconds/S15.9.5.25_A1_T2.js
new file mode 100644
index 0000000000..54830aa061
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCMilliseconds/S15.9.5.25_A1_T2.js
@@ -0,0 +1,24 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype property "getUTCMilliseconds" has { DontEnum }
+    attributes
+esid: sec-date.prototype.getutcmilliseconds
+description: Checking absence of DontDelete attribute
+---*/
+assert.notSameValue(
+  delete Date.prototype.getUTCMilliseconds,
+  false,
+  'The value of delete Date.prototype.getUTCMilliseconds is not false'
+);
+
+assert(
+  !Date.prototype.hasOwnProperty('getUTCMilliseconds'),
+  'The value of !Date.prototype.hasOwnProperty(\'getUTCMilliseconds\') is expected to be true'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCMilliseconds/S15.9.5.25_A1_T3.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCMilliseconds/S15.9.5.25_A1_T3.js
new file mode 100644
index 0000000000..7537023057
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCMilliseconds/S15.9.5.25_A1_T3.js
@@ -0,0 +1,22 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype property "getUTCMilliseconds" has { DontEnum }
+    attributes
+esid: sec-date.prototype.getutcmilliseconds
+description: Checking DontEnum attribute
+---*/
+assert(
+  !Date.prototype.propertyIsEnumerable('getUTCMilliseconds'),
+  'The value of !Date.prototype.propertyIsEnumerable(\'getUTCMilliseconds\') is expected to be true'
+);
+
+for (var x in Date.prototype) {
+  assert.notSameValue(x, "getUTCMilliseconds", 'The value of x is not "getUTCMilliseconds"');
+}
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCMilliseconds/S15.9.5.25_A2_T1.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCMilliseconds/S15.9.5.25_A2_T1.js
new file mode 100644
index 0000000000..6aca17be30
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCMilliseconds/S15.9.5.25_A2_T1.js
@@ -0,0 +1,21 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The "length" property of the "getUTCMilliseconds" is 0
+esid: sec-date.prototype.getutcmilliseconds
+description: The "length" property of the "getUTCMilliseconds" is 0
+---*/
+assert.sameValue(
+  Date.prototype.getUTCMilliseconds.hasOwnProperty("length"),
+  true,
+  'Date.prototype.getUTCMilliseconds.hasOwnProperty("length") must return true'
+);
+
+assert.sameValue(
+  Date.prototype.getUTCMilliseconds.length,
+  0,
+  'The value of Date.prototype.getUTCMilliseconds.length is expected to be 0'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCMilliseconds/S15.9.5.25_A3_T1.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCMilliseconds/S15.9.5.25_A3_T1.js
new file mode 100644
index 0000000000..751e632a31
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCMilliseconds/S15.9.5.25_A3_T1.js
@@ -0,0 +1,24 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype.getUTCMilliseconds property "length" has { ReadOnly,
+    DontDelete, DontEnum } attributes
+esid: sec-date.prototype.getutcmilliseconds
+description: Checking ReadOnly attribute
+includes: [propertyHelper.js]
+---*/
+
+var x = Date.prototype.getUTCMilliseconds.length;
+verifyNotWritable(Date.prototype.getUTCMilliseconds, "length", null, 1);
+
+assert.sameValue(
+  Date.prototype.getUTCMilliseconds.length,
+  x,
+  'The value of Date.prototype.getUTCMilliseconds.length is expected to equal the value of x'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCMilliseconds/S15.9.5.25_A3_T2.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCMilliseconds/S15.9.5.25_A3_T2.js
new file mode 100644
index 0000000000..d04f69662d
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCMilliseconds/S15.9.5.25_A3_T2.js
@@ -0,0 +1,24 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype.getUTCMilliseconds property "length" has { ReadOnly, !
+    DontDelete, DontEnum } attributes
+esid: sec-date.prototype.getutcmilliseconds
+description: Checking DontDelete attribute
+---*/
+assert.sameValue(
+  delete Date.prototype.getUTCMilliseconds.length,
+  true,
+  'The value of `delete Date.prototype.getUTCMilliseconds.length` is expected to be true'
+);
+
+assert(
+  !Date.prototype.getUTCMilliseconds.hasOwnProperty('length'),
+  'The value of !Date.prototype.getUTCMilliseconds.hasOwnProperty(\'length\') is expected to be true'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCMilliseconds/S15.9.5.25_A3_T3.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCMilliseconds/S15.9.5.25_A3_T3.js
new file mode 100644
index 0000000000..6fb9ff17f2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCMilliseconds/S15.9.5.25_A3_T3.js
@@ -0,0 +1,22 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype.getUTCMilliseconds property "length" has { ReadOnly,
+    DontDelete, DontEnum } attributes
+esid: sec-date.prototype.getutcmilliseconds
+description: Checking DontEnum attribute
+---*/
+assert(
+  !Date.prototype.getUTCMilliseconds.propertyIsEnumerable('length'),
+  'The value of !Date.prototype.getUTCMilliseconds.propertyIsEnumerable(\'length\') is expected to be true'
+);
+
+for (var x in Date.prototype.getUTCMilliseconds) {
+  assert.notSameValue(x, "length", 'The value of x is not "length"');
+}
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCMilliseconds/browser.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCMilliseconds/browser.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCMilliseconds/browser.js
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCMilliseconds/name.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCMilliseconds/name.js
new file mode 100644
index 0000000000..1a723340a3
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCMilliseconds/name.js
@@ -0,0 +1,28 @@
+// Copyright (C) 2015 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.prototype.getutcmilliseconds
+description: >
+  Date.prototype.getUTCMilliseconds.name is "getUTCMilliseconds".
+info: |
+  Date.prototype.getUTCMilliseconds ( )
+
+  17 ECMAScript Standard Built-in Objects:
+    Every built-in Function object, including constructors, that is not
+    identified as an anonymous function has a name property whose value
+    is a String.
+
+    Unless otherwise specified, the name property of a built-in Function
+    object, if it exists, has the attributes { [[Writable]]: false,
+    [[Enumerable]]: false, [[Configurable]]: true }.
+includes: [propertyHelper.js]
+---*/
+
+assert.sameValue(Date.prototype.getUTCMilliseconds.name, "getUTCMilliseconds");
+
+verifyNotEnumerable(Date.prototype.getUTCMilliseconds, "name");
+verifyNotWritable(Date.prototype.getUTCMilliseconds, "name");
+verifyConfigurable(Date.prototype.getUTCMilliseconds, "name");
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCMilliseconds/not-a-constructor.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCMilliseconds/not-a-constructor.js
new file mode 100644
index 0000000000..b9e17b9792
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCMilliseconds/not-a-constructor.js
@@ -0,0 +1,35 @@
+// Copyright (C) 2020 Rick Waldron. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-ecmascript-standard-built-in-objects
+description: >
+  Date.prototype.getUTCMilliseconds does not implement [[Construct]], is not new-able
+info: |
+  ECMAScript Function Objects
+
+  Built-in function objects that are not identified as constructors do not
+  implement the [[Construct]] internal method unless otherwise specified in
+  the description of a particular function.
+
+  sec-evaluatenew
+
+  ...
+  7. If IsConstructor(constructor) is false, throw a TypeError exception.
+  ...
+includes: [isConstructor.js]
+features: [Reflect.construct, arrow-function]
+---*/
+
+assert.sameValue(
+  isConstructor(Date.prototype.getUTCMilliseconds),
+  false,
+  'isConstructor(Date.prototype.getUTCMilliseconds) must return false'
+);
+
+assert.throws(TypeError, () => {
+  let date = new Date(Date.now()); new date.getUTCMilliseconds();
+}, '`let date = new Date(Date.now()); new date.getUTCMilliseconds()` throws TypeError');
+
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCMilliseconds/shell.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCMilliseconds/shell.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCMilliseconds/shell.js
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCMilliseconds/this-value-invalid-date.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCMilliseconds/this-value-invalid-date.js
new file mode 100644
index 0000000000..5fff8c51bb
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCMilliseconds/this-value-invalid-date.js
@@ -0,0 +1,13 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.getutcmilliseconds
+description: Return value for invalid date
+info: |
+  1. Let t be ? thisTimeValue(this value).
+  2. If t is NaN, return NaN.
+---*/
+
+assert.sameValue(new Date(NaN).getUTCMilliseconds(), NaN);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCMilliseconds/this-value-non-date.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCMilliseconds/this-value-non-date.js
new file mode 100644
index 0000000000..b1cf64e3b3
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCMilliseconds/this-value-non-date.js
@@ -0,0 +1,36 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.getutcmilliseconds
+description: >
+  Behavior when "this" value is an Object without a [[DateValue]] internal slot
+info: |
+  1. Let t be ? thisTimeValue(this value).
+
+  The abstract operation thisTimeValue(value) performs the following steps:
+
+  1. If Type(value) is Object and value has a [[DateValue]] internal slot, then
+     a. Return value.[[DateValue]].
+  2. Throw a TypeError exception.
+---*/
+
+var getUTCMilliseconds = Date.prototype.getUTCMilliseconds;
+var args = (function() {
+  return arguments;
+}());
+
+assert.sameValue(typeof getUTCMilliseconds, 'function');
+
+assert.throws(TypeError, function() {
+  getUTCMilliseconds.call({});
+}, 'ordinary object');
+
+assert.throws(TypeError, function() {
+  getUTCMilliseconds.call([]);
+}, 'array exotic object');
+
+assert.throws(TypeError, function() {
+  getUTCMilliseconds.call(args);
+}, 'arguments exotic object');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCMilliseconds/this-value-non-object.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCMilliseconds/this-value-non-object.js
new file mode 100644
index 0000000000..8ed9cbdc1a
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCMilliseconds/this-value-non-object.js
@@ -0,0 +1,46 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.getutcmilliseconds
+description: Behavior when "this" value is not an Object
+info: |
+  1. Let t be ? thisTimeValue(this value).
+
+  The abstract operation thisTimeValue(value) performs the following steps:
+
+  1. If Type(value) is Object and value has a [[DateValue]] internal slot, then
+     a. Return value.[[DateValue]].
+  2. Throw a TypeError exception.
+features: [Symbol]
+---*/
+
+var getUTCMilliseconds = Date.prototype.getUTCMilliseconds;
+var symbol = Symbol();
+
+assert.sameValue(typeof getUTCMilliseconds, 'function');
+
+assert.throws(TypeError, function() {
+  getUTCMilliseconds.call(0);
+}, 'number');
+
+assert.throws(TypeError, function() {
+  getUTCMilliseconds.call(true);
+}, 'boolean');
+
+assert.throws(TypeError, function() {
+  getUTCMilliseconds.call(null);
+}, 'null');
+
+assert.throws(TypeError, function() {
+  getUTCMilliseconds.call(undefined);
+}, 'undefined');
+
+assert.throws(TypeError, function() {
+  getUTCMilliseconds.call('');
+}, 'string');
+
+assert.throws(TypeError, function() {
+  getUTCMilliseconds.call(symbol);
+}, 'symbol');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCMilliseconds/this-value-valid-date.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCMilliseconds/this-value-valid-date.js
new file mode 100644
index 0000000000..fdbe4b17fa
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCMilliseconds/this-value-valid-date.js
@@ -0,0 +1,25 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.getutcmmilliseconds
+description: Return value for valid dates
+info: |
+  1. Let t be ? thisTimeValue(this value).
+  2. If t is NaN, return NaN.
+  3. Return msFromTime(t).
+---*/
+
+var july6 = 1467763200000;
+
+assert.sameValue(new Date(july6).getUTCMilliseconds(), 0, 'first millisecond');
+assert.sameValue(
+  new Date(july6 - 1).getUTCMilliseconds(), 999, 'previous millisecond'
+);
+assert.sameValue(
+  new Date(july6 + 999).getUTCMilliseconds(), 999, 'final millisecond'
+);
+assert.sameValue(
+  new Date(july6 + 1000).getUTCMilliseconds(), 0, 'subsequent millisecond'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCMinutes/S15.9.5.21_A1_T1.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCMinutes/S15.9.5.21_A1_T1.js
new file mode 100644
index 0000000000..2f639c3cbb
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCMinutes/S15.9.5.21_A1_T1.js
@@ -0,0 +1,25 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype property "getUTCMinutes" has { DontEnum } attributes
+esid: sec-date.prototype.getutcminutes
+description: Checking absence of ReadOnly attribute
+---*/
+
+var x = Date.prototype.getUTCMinutes;
+if (x === 1) {
+  Date.prototype.getUTCMinutes = 2;
+} else {
+  Date.prototype.getUTCMinutes = 1;
+}
+
+assert.notSameValue(
+  Date.prototype.getUTCMinutes,
+  x,
+  'The value of Date.prototype.getUTCMinutes is expected to not equal the value of `x`'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCMinutes/S15.9.5.21_A1_T2.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCMinutes/S15.9.5.21_A1_T2.js
new file mode 100644
index 0000000000..c49b894496
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCMinutes/S15.9.5.21_A1_T2.js
@@ -0,0 +1,22 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype property "getUTCMinutes" has { DontEnum } attributes
+esid: sec-date.prototype.getutcminutes
+description: Checking absence of DontDelete attribute
+---*/
+assert.notSameValue(
+  delete Date.prototype.getUTCMinutes,
+  false,
+  'The value of delete Date.prototype.getUTCMinutes is not false'
+);
+
+assert(
+  !Date.prototype.hasOwnProperty('getUTCMinutes'),
+  'The value of !Date.prototype.hasOwnProperty(\'getUTCMinutes\') is expected to be true'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCMinutes/S15.9.5.21_A1_T3.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCMinutes/S15.9.5.21_A1_T3.js
new file mode 100644
index 0000000000..3d5acebb83
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCMinutes/S15.9.5.21_A1_T3.js
@@ -0,0 +1,20 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype property "getUTCMinutes" has { DontEnum } attributes
+esid: sec-date.prototype.getutcminutes
+description: Checking DontEnum attribute
+---*/
+assert(
+  !Date.prototype.propertyIsEnumerable('getUTCMinutes'),
+  'The value of !Date.prototype.propertyIsEnumerable(\'getUTCMinutes\') is expected to be true'
+);
+
+for (var x in Date.prototype) {
+  assert.notSameValue(x, "getUTCMinutes", 'The value of x is not "getUTCMinutes"');
+}
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCMinutes/S15.9.5.21_A2_T1.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCMinutes/S15.9.5.21_A2_T1.js
new file mode 100644
index 0000000000..0779033d4c
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCMinutes/S15.9.5.21_A2_T1.js
@@ -0,0 +1,21 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The "length" property of the "getUTCMinutes" is 0
+esid: sec-date.prototype.getutcminutes
+description: The "length" property of the "getUTCMinutes" is 0
+---*/
+assert.sameValue(
+  Date.prototype.getUTCMinutes.hasOwnProperty("length"),
+  true,
+  'Date.prototype.getUTCMinutes.hasOwnProperty("length") must return true'
+);
+
+assert.sameValue(
+  Date.prototype.getUTCMinutes.length,
+  0,
+  'The value of Date.prototype.getUTCMinutes.length is expected to be 0'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCMinutes/S15.9.5.21_A3_T1.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCMinutes/S15.9.5.21_A3_T1.js
new file mode 100644
index 0000000000..4c43a77de8
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCMinutes/S15.9.5.21_A3_T1.js
@@ -0,0 +1,24 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype.getUTCMinutes property "length" has { ReadOnly,
+    DontDelete, DontEnum } attributes
+esid: sec-date.prototype.getutcminutes
+description: Checking ReadOnly attribute
+includes: [propertyHelper.js]
+---*/
+
+var x = Date.prototype.getUTCMinutes.length;
+verifyNotWritable(Date.prototype.getUTCMinutes, "length", null, 1);
+
+assert.sameValue(
+  Date.prototype.getUTCMinutes.length,
+  x,
+  'The value of Date.prototype.getUTCMinutes.length is expected to equal the value of x'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCMinutes/S15.9.5.21_A3_T2.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCMinutes/S15.9.5.21_A3_T2.js
new file mode 100644
index 0000000000..2c6a0ee7ee
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCMinutes/S15.9.5.21_A3_T2.js
@@ -0,0 +1,24 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype.getUTCMinutes property "length" has { ReadOnly, !
+    DontDelete, DontEnum } attributes
+esid: sec-date.prototype.getutcminutes
+description: Checking DontDelete attribute
+---*/
+assert.sameValue(
+  delete Date.prototype.getUTCMinutes.length,
+  true,
+  'The value of `delete Date.prototype.getUTCMinutes.length` is expected to be true'
+);
+
+assert(
+  !Date.prototype.getUTCMinutes.hasOwnProperty('length'),
+  'The value of !Date.prototype.getUTCMinutes.hasOwnProperty(\'length\') is expected to be true'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCMinutes/S15.9.5.21_A3_T3.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCMinutes/S15.9.5.21_A3_T3.js
new file mode 100644
index 0000000000..fc9ed2a7fb
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCMinutes/S15.9.5.21_A3_T3.js
@@ -0,0 +1,22 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype.getUTCMinutes property "length" has { ReadOnly,
+    DontDelete, DontEnum } attributes
+esid: sec-date.prototype.getutcminutes
+description: Checking DontEnum attribute
+---*/
+assert(
+  !Date.prototype.getUTCMinutes.propertyIsEnumerable('length'),
+  'The value of !Date.prototype.getUTCMinutes.propertyIsEnumerable(\'length\') is expected to be true'
+);
+
+for (var x in Date.prototype.getUTCMinutes) {
+  assert.notSameValue(x, "length", 'The value of x is not "length"');
+}
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCMinutes/browser.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCMinutes/browser.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCMinutes/browser.js
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCMinutes/name.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCMinutes/name.js
new file mode 100644
index 0000000000..5fc1ac7b8d
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCMinutes/name.js
@@ -0,0 +1,28 @@
+// Copyright (C) 2015 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.prototype.getutcminutes
+description: >
+  Date.prototype.getUTCMinutes.name is "getUTCMinutes".
+info: |
+  Date.prototype.getUTCMinutes ( )
+
+  17 ECMAScript Standard Built-in Objects:
+    Every built-in Function object, including constructors, that is not
+    identified as an anonymous function has a name property whose value
+    is a String.
+
+    Unless otherwise specified, the name property of a built-in Function
+    object, if it exists, has the attributes { [[Writable]]: false,
+    [[Enumerable]]: false, [[Configurable]]: true }.
+includes: [propertyHelper.js]
+---*/
+
+assert.sameValue(Date.prototype.getUTCMinutes.name, "getUTCMinutes");
+
+verifyNotEnumerable(Date.prototype.getUTCMinutes, "name");
+verifyNotWritable(Date.prototype.getUTCMinutes, "name");
+verifyConfigurable(Date.prototype.getUTCMinutes, "name");
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCMinutes/not-a-constructor.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCMinutes/not-a-constructor.js
new file mode 100644
index 0000000000..be50d8d0e6
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCMinutes/not-a-constructor.js
@@ -0,0 +1,35 @@
+// Copyright (C) 2020 Rick Waldron. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-ecmascript-standard-built-in-objects
+description: >
+  Date.prototype.getUTCMinutes does not implement [[Construct]], is not new-able
+info: |
+  ECMAScript Function Objects
+
+  Built-in function objects that are not identified as constructors do not
+  implement the [[Construct]] internal method unless otherwise specified in
+  the description of a particular function.
+
+  sec-evaluatenew
+
+  ...
+  7. If IsConstructor(constructor) is false, throw a TypeError exception.
+  ...
+includes: [isConstructor.js]
+features: [Reflect.construct, arrow-function]
+---*/
+
+assert.sameValue(
+  isConstructor(Date.prototype.getUTCMinutes),
+  false,
+  'isConstructor(Date.prototype.getUTCMinutes) must return false'
+);
+
+assert.throws(TypeError, () => {
+  let date = new Date(Date.now()); new date.getUTCMinutes();
+}, '`let date = new Date(Date.now()); new date.getUTCMinutes()` throws TypeError');
+
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCMinutes/shell.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCMinutes/shell.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCMinutes/shell.js
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCMinutes/this-value-invalid-date.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCMinutes/this-value-invalid-date.js
new file mode 100644
index 0000000000..71021ea4e1
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCMinutes/this-value-invalid-date.js
@@ -0,0 +1,13 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.getutcminutes
+description: Return value for invalid date
+info: |
+  1. Let t be ? thisTimeValue(this value).
+  2. If t is NaN, return NaN.
+---*/
+
+assert.sameValue(new Date(NaN).getUTCMinutes(), NaN);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCMinutes/this-value-non-date.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCMinutes/this-value-non-date.js
new file mode 100644
index 0000000000..aca3733e13
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCMinutes/this-value-non-date.js
@@ -0,0 +1,36 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.getutcminutes
+description: >
+  Behavior when "this" value is an Object without a [[DateValue]] internal slot
+info: |
+  1. Let t be ? thisTimeValue(this value).
+
+  The abstract operation thisTimeValue(value) performs the following steps:
+
+  1. If Type(value) is Object and value has a [[DateValue]] internal slot, then
+     a. Return value.[[DateValue]].
+  2. Throw a TypeError exception.
+---*/
+
+var getUTCMinutes = Date.prototype.getUTCMinutes;
+var args = (function() {
+  return arguments;
+}());
+
+assert.sameValue(typeof getUTCMinutes, 'function');
+
+assert.throws(TypeError, function() {
+  getUTCMinutes.call({});
+}, 'ordinary object');
+
+assert.throws(TypeError, function() {
+  getUTCMinutes.call([]);
+}, 'array exotic object');
+
+assert.throws(TypeError, function() {
+  getUTCMinutes.call(args);
+}, 'arguments exotic object');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCMinutes/this-value-non-object.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCMinutes/this-value-non-object.js
new file mode 100644
index 0000000000..a39c1453ea
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCMinutes/this-value-non-object.js
@@ -0,0 +1,46 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.getutcminutes
+description: Behavior when "this" value is not an Object
+info: |
+  1. Let t be ? thisTimeValue(this value).
+
+  The abstract operation thisTimeValue(value) performs the following steps:
+
+  1. If Type(value) is Object and value has a [[DateValue]] internal slot, then
+     a. Return value.[[DateValue]].
+  2. Throw a TypeError exception.
+features: [Symbol]
+---*/
+
+var getUTCMinutes = Date.prototype.getUTCMinutes;
+var symbol = Symbol();
+
+assert.sameValue(typeof getUTCMinutes, 'function');
+
+assert.throws(TypeError, function() {
+  getUTCMinutes.call(0);
+}, 'number');
+
+assert.throws(TypeError, function() {
+  getUTCMinutes.call(true);
+}, 'boolean');
+
+assert.throws(TypeError, function() {
+  getUTCMinutes.call(null);
+}, 'null');
+
+assert.throws(TypeError, function() {
+  getUTCMinutes.call(undefined);
+}, 'undefined');
+
+assert.throws(TypeError, function() {
+  getUTCMinutes.call('');
+}, 'string');
+
+assert.throws(TypeError, function() {
+  getUTCMinutes.call(symbol);
+}, 'symbol');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCMinutes/this-value-valid-date.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCMinutes/this-value-valid-date.js
new file mode 100644
index 0000000000..04792ccc2b
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCMinutes/this-value-valid-date.js
@@ -0,0 +1,52 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.getutcminutes
+description: Return value for valid dates
+info: |
+  1. Let t be ? thisTimeValue(this value).
+  2. If t is NaN, return NaN.
+  3. Return MinFromTime(t).
+---*/
+
+var threeTwentyTwo = 1467818520000;
+var threeFiftyNine = 1467820740000;
+var minMs = 60 * 1000;
+
+assert.sameValue(
+  new Date(threeTwentyTwo).getUTCMinutes(), 22, 'first millisecond'
+);
+assert.sameValue(
+  new Date(threeTwentyTwo - 1).getUTCMinutes(), 21, 'previous millisecond'
+);
+assert.sameValue(
+  new Date(threeTwentyTwo + minMs - 1).getUTCMinutes(), 22, 'final millisecond'
+);
+assert.sameValue(
+  new Date(threeTwentyTwo + minMs).getUTCMinutes(),
+  23,
+  'subsequent millisecond'
+);
+
+assert.sameValue(
+  new Date(threeFiftyNine).getUTCMinutes(),
+  59,
+  'first millisecond (day boundary)'
+);
+assert.sameValue(
+  new Date(threeFiftyNine - 1).getUTCMinutes(),
+  58,
+  'previous millisecond (day boundary)'
+);
+assert.sameValue(
+  new Date(threeFiftyNine + minMs - 1).getUTCMinutes(),
+  59,
+  'final millisecond (day boundary)'
+);
+assert.sameValue(
+  new Date(threeFiftyNine + minMs).getUTCMinutes(),
+  0,
+  'subsequent millisecond (day boundary)'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCMonth/S15.9.5.13_A1_T1.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCMonth/S15.9.5.13_A1_T1.js
new file mode 100644
index 0000000000..925d0587ab
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCMonth/S15.9.5.13_A1_T1.js
@@ -0,0 +1,25 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype property "getUTCMonth" has { DontEnum } attributes
+esid: sec-date.prototype.getutcmonth
+description: Checking absence of ReadOnly attribute
+---*/
+
+var x = Date.prototype.getUTCMonth;
+if (x === 1) {
+  Date.prototype.getUTCMonth = 2;
+} else {
+  Date.prototype.getUTCMonth = 1;
+}
+
+assert.notSameValue(
+  Date.prototype.getUTCMonth,
+  x,
+  'The value of Date.prototype.getUTCMonth is expected to not equal the value of `x`'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCMonth/S15.9.5.13_A1_T2.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCMonth/S15.9.5.13_A1_T2.js
new file mode 100644
index 0000000000..f5c1c14170
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCMonth/S15.9.5.13_A1_T2.js
@@ -0,0 +1,22 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype property "getUTCMonth" has { DontEnum } attributes
+esid: sec-date.prototype.getutcmonth
+description: Checking absence of DontDelete attribute
+---*/
+assert.notSameValue(
+  delete Date.prototype.getUTCMonth,
+  false,
+  'The value of delete Date.prototype.getUTCMonth is not false'
+);
+
+assert(
+  !Date.prototype.hasOwnProperty('getUTCMonth'),
+  'The value of !Date.prototype.hasOwnProperty(\'getUTCMonth\') is expected to be true'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCMonth/S15.9.5.13_A1_T3.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCMonth/S15.9.5.13_A1_T3.js
new file mode 100644
index 0000000000..472b1c1447
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCMonth/S15.9.5.13_A1_T3.js
@@ -0,0 +1,20 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype property "getUTCMonth" has { DontEnum } attributes
+esid: sec-date.prototype.getutcmonth
+description: Checking DontEnum attribute
+---*/
+assert(
+  !Date.prototype.propertyIsEnumerable('getUTCMonth'),
+  'The value of !Date.prototype.propertyIsEnumerable(\'getUTCMonth\') is expected to be true'
+);
+
+for (var x in Date.prototype) {
+  assert.notSameValue(x, "getUTCMonth", 'The value of x is not "getUTCMonth"');
+}
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCMonth/S15.9.5.13_A2_T1.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCMonth/S15.9.5.13_A2_T1.js
new file mode 100644
index 0000000000..4fb366a9dc
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCMonth/S15.9.5.13_A2_T1.js
@@ -0,0 +1,21 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The "length" property of the "getUTCMonth" is 0
+esid: sec-date.prototype.getutcmonth
+description: The "length" property of the "getUTCMonth" is 0
+---*/
+assert.sameValue(
+  Date.prototype.getUTCMonth.hasOwnProperty("length"),
+  true,
+  'Date.prototype.getUTCMonth.hasOwnProperty("length") must return true'
+);
+
+assert.sameValue(
+  Date.prototype.getUTCMonth.length,
+  0,
+  'The value of Date.prototype.getUTCMonth.length is expected to be 0'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCMonth/S15.9.5.13_A3_T1.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCMonth/S15.9.5.13_A3_T1.js
new file mode 100644
index 0000000000..9ddd5d2fa4
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCMonth/S15.9.5.13_A3_T1.js
@@ -0,0 +1,24 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype.getUTCMonth property "length" has { ReadOnly,
+    DontDelete, DontEnum } attributes
+esid: sec-date.prototype.getutcmonth
+description: Checking ReadOnly attribute
+includes: [propertyHelper.js]
+---*/
+
+var x = Date.prototype.getUTCMonth.length;
+verifyNotWritable(Date.prototype.getUTCMonth, "length", null, 1);
+
+assert.sameValue(
+  Date.prototype.getUTCMonth.length,
+  x,
+  'The value of Date.prototype.getUTCMonth.length is expected to equal the value of x'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCMonth/S15.9.5.13_A3_T2.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCMonth/S15.9.5.13_A3_T2.js
new file mode 100644
index 0000000000..b712a583b9
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCMonth/S15.9.5.13_A3_T2.js
@@ -0,0 +1,24 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype.getUTCMonth property "length" has { ReadOnly, !
+    DontDelete, DontEnum } attributes
+esid: sec-date.prototype.getutcmonth
+description: Checking DontDelete attribute
+---*/
+assert.sameValue(
+  delete Date.prototype.getUTCMonth.length,
+  true,
+  'The value of `delete Date.prototype.getUTCMonth.length` is expected to be true'
+);
+
+assert(
+  !Date.prototype.getUTCMonth.hasOwnProperty('length'),
+  'The value of !Date.prototype.getUTCMonth.hasOwnProperty(\'length\') is expected to be true'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCMonth/S15.9.5.13_A3_T3.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCMonth/S15.9.5.13_A3_T3.js
new file mode 100644
index 0000000000..0d06b876db
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCMonth/S15.9.5.13_A3_T3.js
@@ -0,0 +1,22 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype.getUTCMonth property "length" has { ReadOnly,
+    DontDelete, DontEnum } attributes
+esid: sec-date.prototype.getutcmonth
+description: Checking DontEnum attribute
+---*/
+assert(
+  !Date.prototype.getUTCMonth.propertyIsEnumerable('length'),
+  'The value of !Date.prototype.getUTCMonth.propertyIsEnumerable(\'length\') is expected to be true'
+);
+
+for (var x in Date.prototype.getUTCMonth) {
+  assert.notSameValue(x, "length", 'The value of x is not "length"');
+}
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCMonth/browser.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCMonth/browser.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCMonth/browser.js
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCMonth/name.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCMonth/name.js
new file mode 100644
index 0000000000..796815dd91
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCMonth/name.js
@@ -0,0 +1,28 @@
+// Copyright (C) 2015 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.prototype.getutcmonth
+description: >
+  Date.prototype.getUTCMonth.name is "getUTCMonth".
+info: |
+  Date.prototype.getUTCMonth ( )
+
+  17 ECMAScript Standard Built-in Objects:
+    Every built-in Function object, including constructors, that is not
+    identified as an anonymous function has a name property whose value
+    is a String.
+
+    Unless otherwise specified, the name property of a built-in Function
+    object, if it exists, has the attributes { [[Writable]]: false,
+    [[Enumerable]]: false, [[Configurable]]: true }.
+includes: [propertyHelper.js]
+---*/
+
+assert.sameValue(Date.prototype.getUTCMonth.name, "getUTCMonth");
+
+verifyNotEnumerable(Date.prototype.getUTCMonth, "name");
+verifyNotWritable(Date.prototype.getUTCMonth, "name");
+verifyConfigurable(Date.prototype.getUTCMonth, "name");
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCMonth/not-a-constructor.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCMonth/not-a-constructor.js
new file mode 100644
index 0000000000..55428f88be
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCMonth/not-a-constructor.js
@@ -0,0 +1,35 @@
+// Copyright (C) 2020 Rick Waldron. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-ecmascript-standard-built-in-objects
+description: >
+  Date.prototype.getUTCMonth does not implement [[Construct]], is not new-able
+info: |
+  ECMAScript Function Objects
+
+  Built-in function objects that are not identified as constructors do not
+  implement the [[Construct]] internal method unless otherwise specified in
+  the description of a particular function.
+
+  sec-evaluatenew
+
+  ...
+  7. If IsConstructor(constructor) is false, throw a TypeError exception.
+  ...
+includes: [isConstructor.js]
+features: [Reflect.construct, arrow-function]
+---*/
+
+assert.sameValue(
+  isConstructor(Date.prototype.getUTCMonth),
+  false,
+  'isConstructor(Date.prototype.getUTCMonth) must return false'
+);
+
+assert.throws(TypeError, () => {
+  let date = new Date(Date.now()); new date.getUTCMonth();
+}, '`let date = new Date(Date.now()); new date.getUTCMonth()` throws TypeError');
+
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCMonth/shell.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCMonth/shell.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCMonth/shell.js
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCMonth/this-value-invalid-date.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCMonth/this-value-invalid-date.js
new file mode 100644
index 0000000000..68bfe82089
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCMonth/this-value-invalid-date.js
@@ -0,0 +1,13 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.getutcmonth
+description: Return value for invalid date
+info: |
+  1. Let t be ? thisTimeValue(this value).
+  2. If t is NaN, return NaN.
+---*/
+
+assert.sameValue(new Date(NaN).getUTCMonth(), NaN);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCMonth/this-value-non-date.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCMonth/this-value-non-date.js
new file mode 100644
index 0000000000..ca28a0d6fd
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCMonth/this-value-non-date.js
@@ -0,0 +1,36 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.getutcmonth
+description: >
+  Behavior when "this" value is an Object without a [[DateValue]] internal slot
+info: |
+  1. Let t be ? thisTimeValue(this value).
+
+  The abstract operation thisTimeValue(value) performs the following steps:
+
+  1. If Type(value) is Object and value has a [[DateValue]] internal slot, then
+     a. Return value.[[DateValue]].
+  2. Throw a TypeError exception.
+---*/
+
+var getUTCMonth = Date.prototype.getUTCMonth;
+var args = (function() {
+  return arguments;
+}());
+
+assert.sameValue(typeof getUTCMonth, 'function');
+
+assert.throws(TypeError, function() {
+  getUTCMonth.call({});
+}, 'ordinary object');
+
+assert.throws(TypeError, function() {
+  getUTCMonth.call([]);
+}, 'array exotic object');
+
+assert.throws(TypeError, function() {
+  getUTCMonth.call(args);
+}, 'arguments exotic object');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCMonth/this-value-non-object.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCMonth/this-value-non-object.js
new file mode 100644
index 0000000000..f1396ebdf2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCMonth/this-value-non-object.js
@@ -0,0 +1,46 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.getutcmonth
+description: Behavior when "this" value is not an Object
+info: |
+  1. Let t be ? thisTimeValue(this value).
+
+  The abstract operation thisTimeValue(value) performs the following steps:
+
+  1. If Type(value) is Object and value has a [[DateValue]] internal slot, then
+     a. Return value.[[DateValue]].
+  2. Throw a TypeError exception.
+features: [Symbol]
+---*/
+
+var getUTCMonth = Date.prototype.getUTCMonth;
+var symbol = Symbol();
+
+assert.sameValue(typeof getUTCMonth, 'function');
+
+assert.throws(TypeError, function() {
+  getUTCMonth.call(0);
+}, 'number');
+
+assert.throws(TypeError, function() {
+  getUTCMonth.call(true);
+}, 'boolean');
+
+assert.throws(TypeError, function() {
+  getUTCMonth.call(null);
+}, 'null');
+
+assert.throws(TypeError, function() {
+  getUTCMonth.call(undefined);
+}, 'undefined');
+
+assert.throws(TypeError, function() {
+  getUTCMonth.call('');
+}, 'string');
+
+assert.throws(TypeError, function() {
+  getUTCMonth.call(symbol);
+}, 'symbol');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCMonth/this-value-valid-date.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCMonth/this-value-valid-date.js
new file mode 100644
index 0000000000..4873c783a6
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCMonth/this-value-valid-date.js
@@ -0,0 +1,44 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.getutcmonth
+description: Return value for valid dates
+info: |
+  1. Let t be ? thisTimeValue(this value).
+  2. If t is NaN, return NaN.
+  3. Return MonthFromTime(t).
+---*/
+
+var july31 = 1469923200000;
+var dec31 = 1483142400000;
+var dayMs = 24 * 60 * 60 * 1000;
+
+assert.sameValue(new Date(july31).getUTCMonth(), 6, 'first millisecond');
+assert.sameValue(
+  new Date(july31 - 1).getUTCMonth(), 6, 'previous millisecond'
+);
+assert.sameValue(
+  new Date(july31 + dayMs - 1).getUTCMonth(), 6, 'final millisecond'
+);
+assert.sameValue(
+  new Date(july31 + dayMs).getUTCMonth(), 7, 'subsequent millisecond'
+);
+
+assert.sameValue(
+  new Date(dec31).getUTCMonth(), 11, 'first millisecond (year boundary)'
+);
+assert.sameValue(
+  new Date(dec31 - 1).getUTCMonth(), 11, 'previous millisecond (year boundary)'
+);
+assert.sameValue(
+  new Date(dec31 + dayMs - 1).getUTCMonth(),
+  11,
+  'final millisecond (year boundary)'
+);
+assert.sameValue(
+  new Date(dec31 + dayMs).getUTCMonth(),
+  0,
+  'subsequent millisecond (year boundary)'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCSeconds/S15.9.5.23_A1_T1.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCSeconds/S15.9.5.23_A1_T1.js
new file mode 100644
index 0000000000..85b6e8fc61
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCSeconds/S15.9.5.23_A1_T1.js
@@ -0,0 +1,25 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype property "getUTCSeconds" has { DontEnum } attributes
+esid: sec-date.prototype.getutcseconds
+description: Checking absence of ReadOnly attribute
+---*/
+
+var x = Date.prototype.getUTCSeconds;
+if (x === 1) {
+  Date.prototype.getUTCSeconds = 2;
+} else {
+  Date.prototype.getUTCSeconds = 1;
+}
+
+assert.notSameValue(
+  Date.prototype.getUTCSeconds,
+  x,
+  'The value of Date.prototype.getUTCSeconds is expected to not equal the value of `x`'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCSeconds/S15.9.5.23_A1_T2.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCSeconds/S15.9.5.23_A1_T2.js
new file mode 100644
index 0000000000..fb718d5d2c
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCSeconds/S15.9.5.23_A1_T2.js
@@ -0,0 +1,22 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype property "getUTCSeconds" has { DontEnum } attributes
+esid: sec-date.prototype.getutcseconds
+description: Checking absence of DontDelete attribute
+---*/
+assert.notSameValue(
+  delete Date.prototype.getUTCSeconds,
+  false,
+  'The value of delete Date.prototype.getUTCSeconds is not false'
+);
+
+assert(
+  !Date.prototype.hasOwnProperty('getUTCSeconds'),
+  'The value of !Date.prototype.hasOwnProperty(\'getUTCSeconds\') is expected to be true'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCSeconds/S15.9.5.23_A1_T3.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCSeconds/S15.9.5.23_A1_T3.js
new file mode 100644
index 0000000000..98e0d3a302
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCSeconds/S15.9.5.23_A1_T3.js
@@ -0,0 +1,20 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype property "getUTCSeconds" has { DontEnum } attributes
+esid: sec-date.prototype.getutcseconds
+description: Checking DontEnum attribute
+---*/
+assert(
+  !Date.prototype.propertyIsEnumerable('getUTCSeconds'),
+  'The value of !Date.prototype.propertyIsEnumerable(\'getUTCSeconds\') is expected to be true'
+);
+
+for (var x in Date.prototype) {
+  assert.notSameValue(x, "getUTCSeconds", 'The value of x is not "getUTCSeconds"');
+}
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCSeconds/S15.9.5.23_A2_T1.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCSeconds/S15.9.5.23_A2_T1.js
new file mode 100644
index 0000000000..ab2c4c4c93
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCSeconds/S15.9.5.23_A2_T1.js
@@ -0,0 +1,21 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The "length" property of the "getUTCSeconds" is 0
+esid: sec-date.prototype.getutcseconds
+description: The "length" property of the "getUTCSeconds" is 0
+---*/
+assert.sameValue(
+  Date.prototype.getUTCSeconds.hasOwnProperty("length"),
+  true,
+  'Date.prototype.getUTCSeconds.hasOwnProperty("length") must return true'
+);
+
+assert.sameValue(
+  Date.prototype.getUTCSeconds.length,
+  0,
+  'The value of Date.prototype.getUTCSeconds.length is expected to be 0'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCSeconds/S15.9.5.23_A3_T1.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCSeconds/S15.9.5.23_A3_T1.js
new file mode 100644
index 0000000000..fdce7234f6
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCSeconds/S15.9.5.23_A3_T1.js
@@ -0,0 +1,24 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype.getUTCSeconds property "length" has { ReadOnly,
+    DontDelete, DontEnum } attributes
+esid: sec-date.prototype.getutcseconds
+description: Checking ReadOnly attribute
+includes: [propertyHelper.js]
+---*/
+
+var x = Date.prototype.getUTCSeconds.length;
+verifyNotWritable(Date.prototype.getUTCSeconds, "length", null, 1);
+
+assert.sameValue(
+  Date.prototype.getUTCSeconds.length,
+  x,
+  'The value of Date.prototype.getUTCSeconds.length is expected to equal the value of x'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCSeconds/S15.9.5.23_A3_T2.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCSeconds/S15.9.5.23_A3_T2.js
new file mode 100644
index 0000000000..45a794334f
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCSeconds/S15.9.5.23_A3_T2.js
@@ -0,0 +1,24 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype.getUTCSeconds property "length" has { ReadOnly, !
+    DontDelete, DontEnum } attributes
+esid: sec-date.prototype.getutcseconds
+description: Checking DontDelete attribute
+---*/
+assert.sameValue(
+  delete Date.prototype.getUTCSeconds.length,
+  true,
+  'The value of `delete Date.prototype.getUTCSeconds.length` is expected to be true'
+);
+
+assert(
+  !Date.prototype.getUTCSeconds.hasOwnProperty('length'),
+  'The value of !Date.prototype.getUTCSeconds.hasOwnProperty(\'length\') is expected to be true'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCSeconds/S15.9.5.23_A3_T3.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCSeconds/S15.9.5.23_A3_T3.js
new file mode 100644
index 0000000000..fc43b2b266
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCSeconds/S15.9.5.23_A3_T3.js
@@ -0,0 +1,22 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype.getUTCSeconds property "length" has { ReadOnly,
+    DontDelete, DontEnum } attributes
+esid: sec-date.prototype.getutcseconds
+description: Checking DontEnum attribute
+---*/
+assert(
+  !Date.prototype.getUTCSeconds.propertyIsEnumerable('length'),
+  'The value of !Date.prototype.getUTCSeconds.propertyIsEnumerable(\'length\') is expected to be true'
+);
+
+for (var x in Date.prototype.getUTCSeconds) {
+  assert.notSameValue(x, "length", 'The value of x is not "length"');
+}
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCSeconds/browser.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCSeconds/browser.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCSeconds/browser.js
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCSeconds/name.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCSeconds/name.js
new file mode 100644
index 0000000000..11cdea38b7
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCSeconds/name.js
@@ -0,0 +1,28 @@
+// Copyright (C) 2015 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.prototype.getutcseconds
+description: >
+  Date.prototype.getUTCSeconds.name is "getUTCSeconds".
+info: |
+  Date.prototype.getUTCSeconds ( )
+
+  17 ECMAScript Standard Built-in Objects:
+    Every built-in Function object, including constructors, that is not
+    identified as an anonymous function has a name property whose value
+    is a String.
+
+    Unless otherwise specified, the name property of a built-in Function
+    object, if it exists, has the attributes { [[Writable]]: false,
+    [[Enumerable]]: false, [[Configurable]]: true }.
+includes: [propertyHelper.js]
+---*/
+
+assert.sameValue(Date.prototype.getUTCSeconds.name, "getUTCSeconds");
+
+verifyNotEnumerable(Date.prototype.getUTCSeconds, "name");
+verifyNotWritable(Date.prototype.getUTCSeconds, "name");
+verifyConfigurable(Date.prototype.getUTCSeconds, "name");
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCSeconds/not-a-constructor.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCSeconds/not-a-constructor.js
new file mode 100644
index 0000000000..be8ed19fe1
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCSeconds/not-a-constructor.js
@@ -0,0 +1,35 @@
+// Copyright (C) 2020 Rick Waldron. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-ecmascript-standard-built-in-objects
+description: >
+  Date.prototype.getUTCSeconds does not implement [[Construct]], is not new-able
+info: |
+  ECMAScript Function Objects
+
+  Built-in function objects that are not identified as constructors do not
+  implement the [[Construct]] internal method unless otherwise specified in
+  the description of a particular function.
+
+  sec-evaluatenew
+
+  ...
+  7. If IsConstructor(constructor) is false, throw a TypeError exception.
+  ...
+includes: [isConstructor.js]
+features: [Reflect.construct, arrow-function]
+---*/
+
+assert.sameValue(
+  isConstructor(Date.prototype.getUTCSeconds),
+  false,
+  'isConstructor(Date.prototype.getUTCSeconds) must return false'
+);
+
+assert.throws(TypeError, () => {
+  let date = new Date(Date.now()); new date.getUTCSeconds();
+}, '`let date = new Date(Date.now()); new date.getUTCSeconds()` throws TypeError');
+
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCSeconds/shell.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCSeconds/shell.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCSeconds/shell.js
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCSeconds/this-value-invalid-date.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCSeconds/this-value-invalid-date.js
new file mode 100644
index 0000000000..98403f3bd7
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCSeconds/this-value-invalid-date.js
@@ -0,0 +1,13 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.getutcseconds
+description: Return value for invalid date
+info: |
+  1. Let t be ? thisTimeValue(this value).
+  2. If t is NaN, return NaN.
+---*/
+
+assert.sameValue(new Date(NaN).getUTCSeconds(), NaN);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCSeconds/this-value-non-date.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCSeconds/this-value-non-date.js
new file mode 100644
index 0000000000..d14a9885fb
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCSeconds/this-value-non-date.js
@@ -0,0 +1,36 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.getutcseconds
+description: >
+  Behavior when "this" value is an Object without a [[DateValue]] internal slot
+info: |
+  1. Let t be ? thisTimeValue(this value).
+
+  The abstract operation thisTimeValue(value) performs the following steps:
+
+  1. If Type(value) is Object and value has a [[DateValue]] internal slot, then
+     a. Return value.[[DateValue]].
+  2. Throw a TypeError exception.
+---*/
+
+var getUTCSeconds = Date.prototype.getUTCSeconds;
+var args = (function() {
+  return arguments;
+}());
+
+assert.sameValue(typeof getUTCSeconds, 'function');
+
+assert.throws(TypeError, function() {
+  getUTCSeconds.call({});
+}, 'ordinary object');
+
+assert.throws(TypeError, function() {
+  getUTCSeconds.call([]);
+}, 'array exotic object');
+
+assert.throws(TypeError, function() {
+  getUTCSeconds.call(args);
+}, 'arguments exotic object');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCSeconds/this-value-non-object.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCSeconds/this-value-non-object.js
new file mode 100644
index 0000000000..575fe16b64
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCSeconds/this-value-non-object.js
@@ -0,0 +1,46 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.getutcseconds
+description: Behavior when "this" value is not an Object
+info: |
+  1. Let t be ? thisTimeValue(this value).
+
+  The abstract operation thisTimeValue(value) performs the following steps:
+
+  1. If Type(value) is Object and value has a [[DateValue]] internal slot, then
+     a. Return value.[[DateValue]].
+  2. Throw a TypeError exception.
+features: [Symbol]
+---*/
+
+var getUTCSeconds = Date.prototype.getUTCSeconds;
+var symbol = Symbol();
+
+assert.sameValue(typeof getUTCSeconds, 'function');
+
+assert.throws(TypeError, function() {
+  getUTCSeconds.call(0);
+}, 'number');
+
+assert.throws(TypeError, function() {
+  getUTCSeconds.call(true);
+}, 'boolean');
+
+assert.throws(TypeError, function() {
+  getUTCSeconds.call(null);
+}, 'null');
+
+assert.throws(TypeError, function() {
+  getUTCSeconds.call(undefined);
+}, 'undefined');
+
+assert.throws(TypeError, function() {
+  getUTCSeconds.call('');
+}, 'string');
+
+assert.throws(TypeError, function() {
+  getUTCSeconds.call(symbol);
+}, 'symbol');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/getUTCSeconds/this-value-valid-date.js b/js/src/tests/test262/built-ins/Date/prototype/getUTCSeconds/this-value-valid-date.js
new file mode 100644
index 0000000000..5851451eea
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/getUTCSeconds/this-value-valid-date.js
@@ -0,0 +1,45 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.getutcseconds
+description: Return value for valid dates
+info: |
+  1. Let t be ? thisTimeValue(this value).
+  2. If t is NaN, return NaN.
+  3. Return SecFromTime(t).
+---*/
+
+var sec34 = 1467819394000;
+var sec59 = 1467819419000;
+
+assert.sameValue(new Date(sec34).getUTCSeconds(), 34, 'first millisecond');
+assert.sameValue(
+  new Date(sec34 - 1).getUTCSeconds(), 33, 'previous millisecond'
+);
+assert.sameValue(
+  new Date(sec34 + 999).getUTCSeconds(), 34, 'final millisecond'
+);
+assert.sameValue(
+  new Date(sec34 + 1000).getUTCSeconds(), 35, 'subsequent millisecond'
+);
+
+assert.sameValue(
+  new Date(sec59).getUTCSeconds(), 59, 'first millisecond (minute boundary)'
+);
+assert.sameValue(
+  new Date(sec59 - 1).getUTCSeconds(),
+  58,
+  'previous millisecond (minute boundary)'
+);
+assert.sameValue(
+  new Date(sec59 + 99).getUTCSeconds(),
+  59,
+  'final millisecond (minute boundary)'
+);
+assert.sameValue(
+  new Date(sec59 + 1000).getUTCSeconds(),
+  0,
+  'subsequent millisecond (minute boundary)'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/no-date-value.js b/js/src/tests/test262/built-ins/Date/prototype/no-date-value.js
new file mode 100644
index 0000000000..0ed5661d0a
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/no-date-value.js
@@ -0,0 +1,29 @@
+// Copyright (C) 2020 Alexey Shvayka. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-properties-of-the-date-prototype-object
+description: >
+  The Date Prototype object does not have a [[DateValue]] internal slot.
+info: |
+  Properties of the Date Prototype Object
+
+  The Date prototype object:
+  [...]
+  * is not a Date instance and does not have a [[DateValue]] internal slot.
+
+  Date.prototype.getTime ( )
+
+  1. Return ? thisTimeValue(this value).
+
+  The abstract operation thisTimeValue takes argument value.
+
+  1. If Type(value) is Object and value has a [[DateValue]] internal slot, then
+    [...]
+  2. Throw a TypeError exception.
+---*/
+
+assert.throws(TypeError, function() {
+  Date.prototype.getTime();
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setDate/S15.9.5.36_A1_T1.js b/js/src/tests/test262/built-ins/Date/prototype/setDate/S15.9.5.36_A1_T1.js
new file mode 100644
index 0000000000..801ffd0e17
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setDate/S15.9.5.36_A1_T1.js
@@ -0,0 +1,25 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype property "setDate" has { DontEnum } attributes
+esid: sec-date.prototype.setdate
+description: Checking absence of ReadOnly attribute
+---*/
+
+var x = Date.prototype.setDate;
+if (x === 1) {
+  Date.prototype.setDate = 2;
+} else {
+  Date.prototype.setDate = 1;
+}
+
+assert.notSameValue(
+  Date.prototype.setDate,
+  x,
+  'The value of Date.prototype.setDate is expected to not equal the value of `x`'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setDate/S15.9.5.36_A1_T2.js b/js/src/tests/test262/built-ins/Date/prototype/setDate/S15.9.5.36_A1_T2.js
new file mode 100644
index 0000000000..d0ad33c7de
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setDate/S15.9.5.36_A1_T2.js
@@ -0,0 +1,18 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype property "setDate" has { DontEnum } attributes
+esid: sec-date.prototype.setdate
+description: Checking absence of DontDelete attribute
+---*/
+assert.notSameValue(delete Date.prototype.setDate, false, 'The value of delete Date.prototype.setDate is not false');
+
+assert(
+  !Date.prototype.hasOwnProperty('setDate'),
+  'The value of !Date.prototype.hasOwnProperty(\'setDate\') is expected to be true'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setDate/S15.9.5.36_A1_T3.js b/js/src/tests/test262/built-ins/Date/prototype/setDate/S15.9.5.36_A1_T3.js
new file mode 100644
index 0000000000..f6f9ffd930
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setDate/S15.9.5.36_A1_T3.js
@@ -0,0 +1,20 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype property "setDate" has { DontEnum } attributes
+esid: sec-date.prototype.setdate
+description: Checking DontEnum attribute
+---*/
+assert(
+  !Date.prototype.propertyIsEnumerable('setDate'),
+  'The value of !Date.prototype.propertyIsEnumerable(\'setDate\') is expected to be true'
+);
+
+for (var x in Date.prototype) {
+  assert.notSameValue(x, "setDate", 'The value of x is not "setDate"');
+}
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setDate/S15.9.5.36_A2_T1.js b/js/src/tests/test262/built-ins/Date/prototype/setDate/S15.9.5.36_A2_T1.js
new file mode 100644
index 0000000000..a54d6a167d
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setDate/S15.9.5.36_A2_T1.js
@@ -0,0 +1,17 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The "length" property of the "setDate" is 1
+esid: sec-date.prototype.setdate
+description: The "length" property of the "setDate" is 1
+---*/
+assert.sameValue(
+  Date.prototype.setDate.hasOwnProperty("length"),
+  true,
+  'Date.prototype.setDate.hasOwnProperty("length") must return true'
+);
+
+assert.sameValue(Date.prototype.setDate.length, 1, 'The value of Date.prototype.setDate.length is expected to be 1');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setDate/S15.9.5.36_A3_T1.js b/js/src/tests/test262/built-ins/Date/prototype/setDate/S15.9.5.36_A3_T1.js
new file mode 100644
index 0000000000..97e9613bb6
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setDate/S15.9.5.36_A3_T1.js
@@ -0,0 +1,24 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype.setDate property "length" has { ReadOnly, DontDelete,
+    DontEnum } attributes
+esid: sec-date.prototype.setdate
+description: Checking ReadOnly attribute
+includes: [propertyHelper.js]
+---*/
+
+var x = Date.prototype.setDate.length;
+verifyNotWritable(Date.prototype.setDate, "length", null, 1);
+
+assert.sameValue(
+  Date.prototype.setDate.length,
+  x,
+  'The value of Date.prototype.setDate.length is expected to equal the value of x'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setDate/S15.9.5.36_A3_T2.js b/js/src/tests/test262/built-ins/Date/prototype/setDate/S15.9.5.36_A3_T2.js
new file mode 100644
index 0000000000..5b82b4c5d2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setDate/S15.9.5.36_A3_T2.js
@@ -0,0 +1,24 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype.setDate property "length" has { ReadOnly, !
+    DontDelete, DontEnum } attributes
+esid: sec-date.prototype.setdate
+description: Checking DontDelete attribute
+---*/
+assert.sameValue(
+  delete Date.prototype.setDate.length,
+  true,
+  'The value of `delete Date.prototype.setDate.length` is expected to be true'
+);
+
+assert(
+  !Date.prototype.setDate.hasOwnProperty('length'),
+  'The value of !Date.prototype.setDate.hasOwnProperty(\'length\') is expected to be true'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setDate/S15.9.5.36_A3_T3.js b/js/src/tests/test262/built-ins/Date/prototype/setDate/S15.9.5.36_A3_T3.js
new file mode 100644
index 0000000000..7bc1624b0b
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setDate/S15.9.5.36_A3_T3.js
@@ -0,0 +1,22 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype.setDate property "length" has { ReadOnly, DontDelete,
+    DontEnum } attributes
+esid: sec-date.prototype.setdate
+description: Checking DontEnum attribute
+---*/
+assert(
+  !Date.prototype.setDate.propertyIsEnumerable('length'),
+  'The value of !Date.prototype.setDate.propertyIsEnumerable(\'length\') is expected to be true'
+);
+
+for (var x in Date.prototype.setDate) {
+  assert.notSameValue(x, "length", 'The value of x is not "length"');
+}
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setDate/arg-coercion-order.js b/js/src/tests/test262/built-ins/Date/prototype/setDate/arg-coercion-order.js
new file mode 100644
index 0000000000..094bec4454
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setDate/arg-coercion-order.js
@@ -0,0 +1,32 @@
+// Copyright (C) 2021 Kevin Gibbons. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.setdate
+description: Order of coercion of provided argument vs NaN check
+info: |
+  1. Let t be ? thisTimeValue(this value).
+  2. Let dt be ? ToNumber(date).
+  3. If t is NaN, return NaN.
+  4. Set t to LocalTime(t).
+  5. Let newDate be MakeDate(MakeDay(YearFromTime(t), MonthFromTime(t), dt), TimeWithinDay(t)).
+  6. Let u be TimeClip(UTC(newDate)).
+  7. Set the [[DateValue]] internal slot of this Date object to u.
+  8. Return u.
+---*/
+
+var date = new Date(NaN);
+var callCount = 0;
+var arg = {
+  valueOf: function() {
+    callCount += 1;
+    return 0;
+  }
+};
+
+var returnValue = date.setDate(arg);
+
+assert.sameValue(callCount, 1, 'ToNumber invoked exactly once');
+assert.sameValue(returnValue, NaN, 'argument is ignored when `this` is an invalid date');
+assert.sameValue(date.getTime(), NaN, 'argument is ignored when `this` is an invalid date');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setDate/arg-to-number-err.js b/js/src/tests/test262/built-ins/Date/prototype/setDate/arg-to-number-err.js
new file mode 100644
index 0000000000..487518b9b7
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setDate/arg-to-number-err.js
@@ -0,0 +1,25 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.setdate
+description: Abrupt completion during type coercion of provided argument
+info: |
+  1. Let t be LocalTime(? thisTimeValue(this value)).
+  2. Let dt be ? ToNumber(date).
+---*/
+
+var date = new Date();
+var originalValue = date.getTime();
+var obj = {
+  valueOf: function() {
+    throw new Test262Error();
+  }
+};
+
+assert.throws(Test262Error, function() {
+  date.setDate(obj);
+});
+
+assert.sameValue(date.getTime(), originalValue);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setDate/arg-to-number.js b/js/src/tests/test262/built-ins/Date/prototype/setDate/arg-to-number.js
new file mode 100644
index 0000000000..84997779ce
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setDate/arg-to-number.js
@@ -0,0 +1,57 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.setdate
+description: Type coercion of provided argument
+info: |
+  1. Let t be LocalTime(? thisTimeValue(this value)).
+  2. Let dt be ? ToNumber(date).
+  3. Let newDate be MakeDate(MakeDay(YearFromTime(t), MonthFromTime(t), dt),
+     TimeWithinDay(t)).
+  4. Let u be TimeClip(UTC(newDate)).
+  5. Set the [[DateValue]] internal slot of this Date object to u.
+  6. Return u.
+---*/
+
+var date = new Date(2016, 6);
+var callCount = 0;
+var arg = {
+  valueOf: function() {
+    args = arguments;
+    thisValue = this;
+    callCount += 1;
+    return 2;
+  }
+};
+var args, thisValue, returnValue;
+
+returnValue = date.setDate(arg);
+
+assert.sameValue(callCount, 1, 'invoked exactly once');
+assert.sameValue(args.length, 0, 'invoked without arguments');
+assert.sameValue(thisValue, arg, '"this" value');
+assert.sameValue(
+  returnValue, new Date(2016, 6, 2).getTime(), 'application of specified value'
+);
+
+returnValue = date.setDate(null);
+
+assert.sameValue(returnValue, new Date(2016, 5, 30).getTime(), 'null');
+
+returnValue = date.setDate(true);
+
+assert.sameValue(returnValue, new Date(2016, 5, 1).getTime(), 'true');
+
+returnValue = date.setDate(false);
+
+assert.sameValue(returnValue, new Date(2016, 4, 31).getTime(), 'false');
+
+returnValue = date.setDate('   +00200.000E-0002	');
+
+assert.sameValue(returnValue, new Date(2016, 4, 2).getTime(), 'string');
+
+returnValue = date.setDate();
+
+assert.sameValue(returnValue, NaN, 'undefined');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setDate/browser.js b/js/src/tests/test262/built-ins/Date/prototype/setDate/browser.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setDate/browser.js
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setDate/name.js b/js/src/tests/test262/built-ins/Date/prototype/setDate/name.js
new file mode 100644
index 0000000000..15ba085ab7
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setDate/name.js
@@ -0,0 +1,28 @@
+// Copyright (C) 2015 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.prototype.setdate
+description: >
+  Date.prototype.setDate.name is "setDate".
+info: |
+  Date.prototype.setDate ( date )
+
+  17 ECMAScript Standard Built-in Objects:
+    Every built-in Function object, including constructors, that is not
+    identified as an anonymous function has a name property whose value
+    is a String.
+
+    Unless otherwise specified, the name property of a built-in Function
+    object, if it exists, has the attributes { [[Writable]]: false,
+    [[Enumerable]]: false, [[Configurable]]: true }.
+includes: [propertyHelper.js]
+---*/
+
+assert.sameValue(Date.prototype.setDate.name, "setDate");
+
+verifyNotEnumerable(Date.prototype.setDate, "name");
+verifyNotWritable(Date.prototype.setDate, "name");
+verifyConfigurable(Date.prototype.setDate, "name");
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setDate/new-value-time-clip.js b/js/src/tests/test262/built-ins/Date/prototype/setDate/new-value-time-clip.js
new file mode 100644
index 0000000000..d0c25070ef
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setDate/new-value-time-clip.js
@@ -0,0 +1,30 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.setdate
+description: Behavior when new value exceeds [[DateValue]] limits
+info: |
+  1. Let t be LocalTime(? thisTimeValue(this value)).
+  2. Let dt be ? ToNumber(date).
+  3. Let newDate be MakeDate(MakeDay(YearFromTime(t), MonthFromTime(t), dt),
+     TimeWithinDay(t)).
+  4. Let u be TimeClip(UTC(newDate)).
+  5. Set the [[DateValue]] internal slot of this Date object to u.
+  6. Return u.
+
+  TimeClip (time)
+
+  1. If time is not finite, return NaN.
+  2. If abs(time) > 8.64 × 1015, return NaN.
+---*/
+
+var date = new Date(8.64e15);
+var returnValue;
+
+assert.notSameValue(date.getTime(), NaN);
+
+returnValue = date.setDate(28);
+
+assert.sameValue(returnValue, NaN);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setDate/not-a-constructor.js b/js/src/tests/test262/built-ins/Date/prototype/setDate/not-a-constructor.js
new file mode 100644
index 0000000000..cc4d2bca46
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setDate/not-a-constructor.js
@@ -0,0 +1,35 @@
+// Copyright (C) 2020 Rick Waldron. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-ecmascript-standard-built-in-objects
+description: >
+  Date.prototype.setDate does not implement [[Construct]], is not new-able
+info: |
+  ECMAScript Function Objects
+
+  Built-in function objects that are not identified as constructors do not
+  implement the [[Construct]] internal method unless otherwise specified in
+  the description of a particular function.
+
+  sec-evaluatenew
+
+  ...
+  7. If IsConstructor(constructor) is false, throw a TypeError exception.
+  ...
+includes: [isConstructor.js]
+features: [Reflect.construct, arrow-function]
+---*/
+
+assert.sameValue(
+  isConstructor(Date.prototype.setDate),
+  false,
+  'isConstructor(Date.prototype.setDate) must return false'
+);
+
+assert.throws(TypeError, () => {
+  let date = new Date(Date.now()); new date.setDate();
+}, '`let date = new Date(Date.now()); new date.setDate()` throws TypeError');
+
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setDate/shell.js b/js/src/tests/test262/built-ins/Date/prototype/setDate/shell.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setDate/shell.js
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setDate/this-value-invalid-date.js b/js/src/tests/test262/built-ins/Date/prototype/setDate/this-value-invalid-date.js
new file mode 100644
index 0000000000..e3e8e953b9
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setDate/this-value-invalid-date.js
@@ -0,0 +1,25 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.setdate
+description: >
+  Behavior when the "this" value is a Date object describing an invald date
+info: |
+  1. Let t be LocalTime(? thisTimeValue(this value)).
+  2. Let dt be ? ToNumber(date).
+  3. Let newDate be MakeDate(MakeDay(YearFromTime(t), MonthFromTime(t), dt),
+     TimeWithinDay(t)).
+  4. Let u be TimeClip(UTC(newDate)).
+  5. Set the [[DateValue]] internal slot of this Date object to u.
+  6. Return u.
+---*/
+
+var date = new Date(NaN);
+var result;
+
+result = date.setDate(0);
+
+assert.sameValue(result, NaN, 'return value');
+assert.sameValue(date.getTime(), NaN, '[[DateValue]] internal slot');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setDate/this-value-non-date.js b/js/src/tests/test262/built-ins/Date/prototype/setDate/this-value-non-date.js
new file mode 100644
index 0000000000..66fd4e6881
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setDate/this-value-non-date.js
@@ -0,0 +1,45 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.setdate
+description: >
+  Behavior when "this" value is an Object without a [[DateValue]] internal slot
+info: |
+  1. Let t be LocalTime(? thisTimeValue(this value)).
+
+  The abstract operation thisTimeValue(value) performs the following steps:
+
+  1. If Type(value) is Object and value has a [[DateValue]] internal slot, then
+     a. Return value.[[DateValue]].
+  2. Throw a TypeError exception.
+---*/
+
+var setDate = Date.prototype.setDate;
+var callCount = 0;
+var arg = {
+  valueOf: function() {
+    callCount += 1;
+    return 1;
+  }
+};
+var args = (function() {
+  return arguments;
+}());
+
+assert.sameValue(typeof setDate, 'function');
+
+assert.throws(TypeError, function() {
+  setDate.call({}, arg);
+}, 'ordinary object');
+
+assert.throws(TypeError, function() {
+  setDate.call([], arg);
+}, 'array exotic object');
+
+assert.throws(TypeError, function() {
+  setDate.call(args, arg);
+}, 'arguments exotic object');
+
+assert.sameValue(callCount, 0, 'validation precedes input coercion');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setDate/this-value-non-object.js b/js/src/tests/test262/built-ins/Date/prototype/setDate/this-value-non-object.js
new file mode 100644
index 0000000000..6033b0c9aa
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setDate/this-value-non-object.js
@@ -0,0 +1,55 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.setdate
+description: Behavior when "this" value is not an Object
+info: |
+  1. Let t be LocalTime(? thisTimeValue(this value)).
+
+  The abstract operation thisTimeValue(value) performs the following steps:
+
+  1. If Type(value) is Object and value has a [[DateValue]] internal slot, then
+     a. Return value.[[DateValue]].
+  2. Throw a TypeError exception.
+features: [Symbol]
+---*/
+
+var setDate = Date.prototype.setDate;
+var callCount = 0;
+var arg = {
+  valueOf: function() {
+    callCount += 1;
+    return 1;
+  }
+};
+var symbol = Symbol();
+
+assert.sameValue(typeof setDate, 'function');
+
+assert.throws(TypeError, function() {
+  setDate.call(0, arg);
+}, 'number');
+
+assert.throws(TypeError, function() {
+  setDate.call(true, arg);
+}, 'boolean');
+
+assert.throws(TypeError, function() {
+  setDate.call(null, arg);
+}, 'null');
+
+assert.throws(TypeError, function() {
+  setDate.call(undefined, arg);
+}, 'undefined');
+
+assert.throws(TypeError, function() {
+  setDate.call('', arg);
+}, 'string');
+
+assert.throws(TypeError, function() {
+  setDate.call(symbol, arg);
+}, 'symbol');
+
+assert.sameValue(callCount, 0, 'validation precedes input coercion');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setDate/this-value-valid-date.js b/js/src/tests/test262/built-ins/Date/prototype/setDate/this-value-valid-date.js
new file mode 100644
index 0000000000..8ce10fc6ef
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setDate/this-value-valid-date.js
@@ -0,0 +1,49 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.setdate
+description: Return value for valid dates
+info: |
+  1. Let t be LocalTime(? thisTimeValue(this value)).
+  2. Let dt be ? ToNumber(date).
+  3. Let newDate be MakeDate(MakeDay(YearFromTime(t), MonthFromTime(t), dt),
+     TimeWithinDay(t)).
+  4. Let u be TimeClip(UTC(newDate)).
+  5. Set the [[DateValue]] internal slot of this Date object to u.
+  6. Return u.
+---*/
+
+var date = new Date(2016, 6);
+var returnValue, expected;
+
+returnValue = date.setDate(6);
+
+expected = new Date(2016, 6, 6).getTime();
+assert.sameValue(
+  returnValue, expected, 'within unit boundary (return value)'
+);
+assert.sameValue(
+  date.getTime(), expected, 'within unit boundary ([[DateValue]] slot)'
+);
+
+returnValue = date.setDate(0);
+
+expected = new Date(2016, 5, 30).getTime();
+assert.sameValue(
+  returnValue, expected, 'before time unit boundary (return value)'
+);
+assert.sameValue(
+  date.getTime(), expected, 'before time unit boundary ([[DateValue]] slot)'
+);
+
+returnValue = date.setDate(31);
+
+expected = new Date(2016, 6, 1).getTime();
+assert.sameValue(
+  returnValue, expected, 'after time unit boundary (return value)'
+);
+assert.sameValue(
+  date.getTime(), expected, 'after time unit boundary ([[DateValue]] slot)'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setFullYear/15.9.5.40_1.js b/js/src/tests/test262/built-ins/Date/prototype/setFullYear/15.9.5.40_1.js
new file mode 100644
index 0000000000..793edd6fd7
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setFullYear/15.9.5.40_1.js
@@ -0,0 +1,16 @@
+// Copyright (c) 2012 Ecma International.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.prototype.setfullyear
+description: >
+    Date.prototype.setFullYear - Date.prototype is itself not an
+    instance of Date
+---*/
+
+
+assert.throws(TypeError, function() {
+  Date.prototype.setFullYear(2012);
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setFullYear/S15.9.5.40_A1_T1.js b/js/src/tests/test262/built-ins/Date/prototype/setFullYear/S15.9.5.40_A1_T1.js
new file mode 100644
index 0000000000..b958ff7ac0
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setFullYear/S15.9.5.40_A1_T1.js
@@ -0,0 +1,25 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype property "setFullYear" has { DontEnum } attributes
+esid: sec-date.prototype.setfullyear
+description: Checking absence of ReadOnly attribute
+---*/
+
+var x = Date.prototype.setFullYear;
+if (x === 1) {
+  Date.prototype.setFullYear = 2;
+} else {
+  Date.prototype.setFullYear = 1;
+}
+
+assert.notSameValue(
+  Date.prototype.setFullYear,
+  x,
+  'The value of Date.prototype.setFullYear is expected to not equal the value of `x`'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setFullYear/S15.9.5.40_A1_T2.js b/js/src/tests/test262/built-ins/Date/prototype/setFullYear/S15.9.5.40_A1_T2.js
new file mode 100644
index 0000000000..ac18a41d6f
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setFullYear/S15.9.5.40_A1_T2.js
@@ -0,0 +1,22 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype property "setFullYear" has { DontEnum } attributes
+esid: sec-date.prototype.setfullyear
+description: Checking absence of DontDelete attribute
+---*/
+assert.notSameValue(
+  delete Date.prototype.setFullYear,
+  false,
+  'The value of delete Date.prototype.setFullYear is not false'
+);
+
+assert(
+  !Date.prototype.hasOwnProperty('setFullYear'),
+  'The value of !Date.prototype.hasOwnProperty(\'setFullYear\') is expected to be true'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setFullYear/S15.9.5.40_A1_T3.js b/js/src/tests/test262/built-ins/Date/prototype/setFullYear/S15.9.5.40_A1_T3.js
new file mode 100644
index 0000000000..f342b57550
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setFullYear/S15.9.5.40_A1_T3.js
@@ -0,0 +1,20 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype property "setFullYear" has { DontEnum } attributes
+esid: sec-date.prototype.setfullyear
+description: Checking DontEnum attribute
+---*/
+assert(
+  !Date.prototype.propertyIsEnumerable('setFullYear'),
+  'The value of !Date.prototype.propertyIsEnumerable(\'setFullYear\') is expected to be true'
+);
+
+for (var x in Date.prototype) {
+  assert.notSameValue(x, "setFullYear", 'The value of x is not "setFullYear"');
+}
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setFullYear/S15.9.5.40_A2_T1.js b/js/src/tests/test262/built-ins/Date/prototype/setFullYear/S15.9.5.40_A2_T1.js
new file mode 100644
index 0000000000..f7f92225f7
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setFullYear/S15.9.5.40_A2_T1.js
@@ -0,0 +1,21 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The "length" property of the "setFullYear" is 3
+esid: sec-date.prototype.setfullyear
+description: The "length" property of the "setFullYear" is 3
+---*/
+assert.sameValue(
+  Date.prototype.setFullYear.hasOwnProperty("length"),
+  true,
+  'Date.prototype.setFullYear.hasOwnProperty("length") must return true'
+);
+
+assert.sameValue(
+  Date.prototype.setFullYear.length,
+  3,
+  'The value of Date.prototype.setFullYear.length is expected to be 3'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setFullYear/S15.9.5.40_A3_T1.js b/js/src/tests/test262/built-ins/Date/prototype/setFullYear/S15.9.5.40_A3_T1.js
new file mode 100644
index 0000000000..9f8c4bf99c
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setFullYear/S15.9.5.40_A3_T1.js
@@ -0,0 +1,24 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype.setFullYear property "length" has { ReadOnly,
+    DontDelete, DontEnum } attributes
+esid: sec-date.prototype.setfullyear
+description: Checking ReadOnly attribute
+includes: [propertyHelper.js]
+---*/
+
+var x = Date.prototype.setFullYear.length;
+verifyNotWritable(Date.prototype.setFullYear, "length", null, 1);
+
+assert.sameValue(
+  Date.prototype.setFullYear.length,
+  x,
+  'The value of Date.prototype.setFullYear.length is expected to equal the value of x'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setFullYear/S15.9.5.40_A3_T2.js b/js/src/tests/test262/built-ins/Date/prototype/setFullYear/S15.9.5.40_A3_T2.js
new file mode 100644
index 0000000000..562b430dcf
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setFullYear/S15.9.5.40_A3_T2.js
@@ -0,0 +1,24 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype.setFullYear property "length" has { ReadOnly, !
+    DontDelete, DontEnum } attributes
+esid: sec-date.prototype.setfullyear
+description: Checking DontDelete attribute
+---*/
+assert.sameValue(
+  delete Date.prototype.setFullYear.length,
+  true,
+  'The value of `delete Date.prototype.setFullYear.length` is expected to be true'
+);
+
+assert(
+  !Date.prototype.setFullYear.hasOwnProperty('length'),
+  'The value of !Date.prototype.setFullYear.hasOwnProperty(\'length\') is expected to be true'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setFullYear/S15.9.5.40_A3_T3.js b/js/src/tests/test262/built-ins/Date/prototype/setFullYear/S15.9.5.40_A3_T3.js
new file mode 100644
index 0000000000..707623ba51
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setFullYear/S15.9.5.40_A3_T3.js
@@ -0,0 +1,22 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype.setFullYear property "length" has { ReadOnly,
+    DontDelete, DontEnum } attributes
+esid: sec-date.prototype.setfullyear
+description: Checking DontEnum attribute
+---*/
+assert(
+  !Date.prototype.setFullYear.propertyIsEnumerable('length'),
+  'The value of !Date.prototype.setFullYear.propertyIsEnumerable(\'length\') is expected to be true'
+);
+
+for (var x in Date.prototype.setFullYear) {
+  assert.notSameValue(x, "length", 'The value of x is not "length"');
+}
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setFullYear/arg-date-to-number-err.js b/js/src/tests/test262/built-ins/Date/prototype/setFullYear/arg-date-to-number-err.js
new file mode 100644
index 0000000000..33e6e9b366
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setFullYear/arg-date-to-number-err.js
@@ -0,0 +1,30 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.setfullyear
+description: Abrupt completion during type coercion of provided "date"
+info: |
+  1. Let t be LocalTime(? thisTimeValue(this value)).
+  2. If t is NaN, let t be +0; otherwise, let t be LocalTime(t).
+  3. Let y be ? ToNumber(year).
+  4. If month is not specified, let m be MonthFromTime(t); otherwise, let m be
+     ? ToNumber(month).
+  5. If date is not specified, let dt be DateFromTime(t); otherwise, let dt be
+     ? ToNumber(date).
+---*/
+
+var date = new Date();
+var originalValue = date.getTime();
+var obj = {
+  valueOf: function() {
+    throw new Test262Error();
+  }
+};
+
+assert.throws(Test262Error, function() {
+  date.setFullYear(0, 0, obj);
+});
+
+assert.sameValue(date.getTime(), originalValue);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setFullYear/arg-date-to-number.js b/js/src/tests/test262/built-ins/Date/prototype/setFullYear/arg-date-to-number.js
new file mode 100644
index 0000000000..00773ce72b
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setFullYear/arg-date-to-number.js
@@ -0,0 +1,79 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.setfullyear
+description: Type coercion of provided "date"
+info: |
+  1. Let t be ? thisTimeValue(this value).
+  2. If t is NaN, let t be +0; otherwise, let t be LocalTime(t).
+  3. Let y be ? ToNumber(year).
+  4. If month is not specified, let m be MonthFromTime(t); otherwise, let m be
+     ? ToNumber(month).
+  5. If date is not specified, let dt be DateFromTime(t); otherwise, let dt be
+     ? ToNumber(date).
+  6. Let newDate be MakeDate(MakeDay(y, m, dt), TimeWithinDay(t)).
+  7. Let u be TimeClip(UTC(newDate)).
+  8. Set the [[DateValue]] internal slot of this Date object to u.
+  9. Return u.
+---*/
+
+var date = new Date(2016, 6, 7, 11, 36, 23, 2);
+var callCount = 0;
+var arg = {
+  valueOf: function() {
+    args = arguments;
+    thisValue = this;
+    callCount += 1;
+    return 2;
+  }
+};
+var args, thisValue, returnValue;
+
+returnValue = date.setFullYear(2016, 6, arg);
+
+assert.sameValue(callCount, 1, 'invoked exactly once');
+assert.sameValue(args.length, 0, 'invoked without arguments');
+assert.sameValue(thisValue, arg, '"this" value');
+assert.sameValue(
+  returnValue,
+  new Date(2016, 6, 2, 11, 36, 23, 2).getTime(),
+  'application of specified value'
+);
+
+returnValue = date.setFullYear(2016, 6, null);
+
+assert.sameValue(
+  returnValue,
+  new Date(2016, 6, 0, 11, 36, 23, 2).getTime(),
+  'null'
+);
+
+returnValue = date.setFullYear(2016, 6, true);
+
+assert.sameValue(
+  returnValue,
+  new Date(2016, 6, 1, 11, 36, 23, 2).getTime(),
+  'true'
+);
+
+returnValue = date.setFullYear(2016, 6, false);
+
+assert.sameValue(
+  returnValue,
+  new Date(2016, 6, 0, 11, 36, 23, 2).getTime(),
+  'false'
+);
+
+returnValue = date.setFullYear(2016, 6, '   +00200.000E-0002	');
+
+assert.sameValue(
+  returnValue,
+  new Date(2016, 6, 2, 11, 36, 23, 2).getTime(),
+  'string'
+);
+
+returnValue = date.setFullYear(2016, 6, undefined);
+
+assert.sameValue(returnValue, NaN, 'undefined');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setFullYear/arg-month-to-number-err.js b/js/src/tests/test262/built-ins/Date/prototype/setFullYear/arg-month-to-number-err.js
new file mode 100644
index 0000000000..46bb7e8597
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setFullYear/arg-month-to-number-err.js
@@ -0,0 +1,35 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.setfullyear
+description: Abrupt completion during type coercion of provided "month"
+info: |
+  1. Let t be LocalTime(? thisTimeValue(this value)).
+  2. If t is NaN, let t be +0; otherwise, let t be LocalTime(t).
+  3. Let y be ? ToNumber(year).
+  4. If month is not specified, let m be MonthFromTime(t); otherwise, let m be
+     ? ToNumber(month).
+---*/
+
+var date = new Date();
+var callCount = 0;
+var originalValue = date.getTime();
+var obj = {
+  valueOf: function() {
+    throw new Test262Error();
+  }
+};
+var counter = {
+  valueOf: function() {
+    callCount += 1;
+  }
+};
+
+assert.throws(Test262Error, function() {
+  date.setFullYear(0, obj, counter);
+});
+
+assert.sameValue(date.getTime(), originalValue);
+assert.sameValue(callCount, 0);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setFullYear/arg-month-to-number.js b/js/src/tests/test262/built-ins/Date/prototype/setFullYear/arg-month-to-number.js
new file mode 100644
index 0000000000..500ad370fd
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setFullYear/arg-month-to-number.js
@@ -0,0 +1,79 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.setfullyear
+description: Type coercion of provided "month"
+info: |
+  1. Let t be ? thisTimeValue(this value).
+  2. If t is NaN, let t be +0; otherwise, let t be LocalTime(t).
+  3. Let y be ? ToNumber(year).
+  4. If month is not specified, let m be MonthFromTime(t); otherwise, let m be
+     ? ToNumber(month).
+  5. If date is not specified, let dt be DateFromTime(t); otherwise, let dt be
+     ? ToNumber(date).
+  6. Let newDate be MakeDate(MakeDay(y, m, dt), TimeWithinDay(t)).
+  7. Let u be TimeClip(UTC(newDate)).
+  8. Set the [[DateValue]] internal slot of this Date object to u.
+  9. Return u.
+---*/
+
+var date = new Date(2016, 6, 7, 11, 36, 23, 2);
+var callCount = 0;
+var arg = {
+  valueOf: function() {
+    args = arguments;
+    thisValue = this;
+    callCount += 1;
+    return 2;
+  }
+};
+var args, thisValue, returnValue;
+
+returnValue = date.setFullYear(2016, arg);
+
+assert.sameValue(callCount, 1, 'invoked exactly once');
+assert.sameValue(args.length, 0, 'invoked without arguments');
+assert.sameValue(thisValue, arg, '"this" value');
+assert.sameValue(
+  returnValue,
+  new Date(2016, 2, 7, 11, 36, 23, 2).getTime(),
+  'application of specified value'
+);
+
+returnValue = date.setFullYear(2016, null);
+
+assert.sameValue(
+  returnValue,
+  new Date(2016, 0, 7, 11, 36, 23, 2).getTime(),
+  'null'
+);
+
+returnValue = date.setFullYear(2016, true);
+
+assert.sameValue(
+  returnValue,
+  new Date(2016, 1, 7, 11, 36, 23, 2).getTime(),
+  'true'
+);
+
+returnValue = date.setFullYear(2016, false);
+
+assert.sameValue(
+  returnValue,
+  new Date(2016, 0, 7, 11, 36, 23, 2).getTime(),
+  'false'
+);
+
+returnValue = date.setFullYear(2016, '   +00200.000E-0002	');
+
+assert.sameValue(
+  returnValue,
+  new Date(2016, 2, 7, 11, 36, 23, 2).getTime(),
+  'string'
+);
+
+returnValue = date.setFullYear(2016, undefined);
+
+assert.sameValue(returnValue, NaN, 'undefined');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setFullYear/arg-year-to-number-err.js b/js/src/tests/test262/built-ins/Date/prototype/setFullYear/arg-year-to-number-err.js
new file mode 100644
index 0000000000..a8ec29c120
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setFullYear/arg-year-to-number-err.js
@@ -0,0 +1,33 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.setfullyear
+description: Abrupt completion during type coercion of provided "year"
+info: |
+  1. Let t be LocalTime(? thisTimeValue(this value)).
+  2. If t is NaN, let t be +0; otherwise, let t be LocalTime(t).
+  3. Let y be ? ToNumber(year).
+---*/
+
+var date = new Date();
+var callCount = 0;
+var originalValue = date.getTime();
+var obj = {
+  valueOf: function() {
+    throw new Test262Error();
+  }
+};
+var counter = {
+  valueOf: function() {
+    callCount += 1;
+  }
+};
+
+assert.throws(Test262Error, function() {
+  date.setFullYear(obj, counter, counter);
+});
+
+assert.sameValue(date.getTime(), originalValue);
+assert.sameValue(callCount, 0);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setFullYear/arg-year-to-number.js b/js/src/tests/test262/built-ins/Date/prototype/setFullYear/arg-year-to-number.js
new file mode 100644
index 0000000000..aa8481972f
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setFullYear/arg-year-to-number.js
@@ -0,0 +1,79 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.setfullyear
+description: Type coercion of provided "year"
+info: |
+  1. Let t be ? thisTimeValue(this value).
+  2. If t is NaN, let t be +0; otherwise, let t be LocalTime(t).
+  3. Let y be ? ToNumber(year).
+  4. If month is not specified, let m be MonthFromTime(t); otherwise, let m be
+     ? ToNumber(month).
+  5. If date is not specified, let dt be DateFromTime(t); otherwise, let dt be
+     ? ToNumber(date).
+  6. Let newDate be MakeDate(MakeDay(y, m, dt), TimeWithinDay(t)).
+  7. Let u be TimeClip(UTC(newDate)).
+  8. Set the [[DateValue]] internal slot of this Date object to u.
+  9. Return u.
+---*/
+
+var date = new Date(2016, 6, 7, 11, 36, 23, 2);
+var callCount = 0;
+var arg = {
+  valueOf: function() {
+    args = arguments;
+    thisValue = this;
+    callCount += 1;
+    return 2;
+  }
+};
+var args, thisValue, returnValue;
+
+returnValue = date.setFullYear(arg);
+
+assert.sameValue(callCount, 1, 'invoked exactly once');
+assert.sameValue(args.length, 0, 'invoked without arguments');
+assert.sameValue(thisValue, arg, '"this" value');
+assert.sameValue(
+  returnValue,
+  new Date(-1, 42, 7, 11, 36, 23, 2).getTime(),
+  'application of specified value'
+);
+
+returnValue = date.setFullYear(null);
+
+assert.sameValue(
+  returnValue,
+  new Date(-1, 18, 7, 11, 36, 23, 2).getTime(),
+  'null'
+);
+
+returnValue = date.setFullYear(true);
+
+assert.sameValue(
+  returnValue,
+  new Date(-1, 30, 7, 11, 36, 23, 2).getTime(),
+  'true'
+);
+
+returnValue = date.setFullYear(false);
+
+assert.sameValue(
+  returnValue,
+  new Date(-1, 18, 7, 11, 36, 23, 2).getTime(),
+  'false'
+);
+
+returnValue = date.setFullYear('   +00200.000E-0002	');
+
+assert.sameValue(
+  returnValue,
+  new Date(-1, 42, 7, 11, 36, 23, 2).getTime(),
+  'string'
+);
+
+returnValue = date.setFullYear();
+
+assert.sameValue(returnValue, NaN, 'undefined');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setFullYear/browser.js b/js/src/tests/test262/built-ins/Date/prototype/setFullYear/browser.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setFullYear/browser.js
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setFullYear/name.js b/js/src/tests/test262/built-ins/Date/prototype/setFullYear/name.js
new file mode 100644
index 0000000000..07255899ed
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setFullYear/name.js
@@ -0,0 +1,28 @@
+// Copyright (C) 2015 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.prototype.setfullyear
+description: >
+  Date.prototype.setFullYear.name is "setFullYear".
+info: |
+  Date.prototype.setFullYear ( year [ , month [ , date ] ] )
+
+  17 ECMAScript Standard Built-in Objects:
+    Every built-in Function object, including constructors, that is not
+    identified as an anonymous function has a name property whose value
+    is a String.
+
+    Unless otherwise specified, the name property of a built-in Function
+    object, if it exists, has the attributes { [[Writable]]: false,
+    [[Enumerable]]: false, [[Configurable]]: true }.
+includes: [propertyHelper.js]
+---*/
+
+assert.sameValue(Date.prototype.setFullYear.name, "setFullYear");
+
+verifyNotEnumerable(Date.prototype.setFullYear, "name");
+verifyNotWritable(Date.prototype.setFullYear, "name");
+verifyConfigurable(Date.prototype.setFullYear, "name");
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setFullYear/new-value-time-clip.js b/js/src/tests/test262/built-ins/Date/prototype/setFullYear/new-value-time-clip.js
new file mode 100644
index 0000000000..87db6a917d
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setFullYear/new-value-time-clip.js
@@ -0,0 +1,50 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.setfullyear
+description: Behavior when new value exceeds [[DateValue]] limits
+info: |
+  1. Let t be ? thisTimeValue(this value).
+  2. If t is NaN, let t be +0; otherwise, let t be LocalTime(t).
+  3. Let y be ? ToNumber(year).
+  4. If month is not specified, let m be MonthFromTime(t); otherwise, let m be
+     ? ToNumber(month).
+  5. If date is not specified, let dt be DateFromTime(t); otherwise, let dt be
+     ? ToNumber(date).
+  6. Let newDate be MakeDate(MakeDay(y, m, dt), TimeWithinDay(t)).
+  7. Let u be TimeClip(UTC(newDate)).
+  8. Set the [[DateValue]] internal slot of this Date object to u.
+  9. Return u.
+
+  TimeClip (time)
+
+  1. If time is not finite, return NaN.
+  2. If abs(time) > 8.64 × 1015, return NaN.
+---*/
+
+var maxMs = 8.64e15;
+var maxYear = 275760;
+var maxDate = 12;
+var maxMonth = 8;
+var date = new Date(maxMs);
+var returnValue;
+
+assert.notSameValue(date.getTime(), NaN);
+
+returnValue = date.setFullYear(maxYear + 1);
+
+assert.sameValue(returnValue, NaN, 'overflow due to year');
+
+date = new Date(maxMs);
+
+returnValue = date.setFullYear(maxYear, maxMonth + 1);
+
+assert.sameValue(returnValue, NaN, 'overflow due to month');
+
+date = new Date(maxMs);
+
+returnValue = date.setFullYear(maxYear, maxMonth, maxDate + 2);
+
+assert.sameValue(returnValue, NaN, 'overflow due to date');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setFullYear/not-a-constructor.js b/js/src/tests/test262/built-ins/Date/prototype/setFullYear/not-a-constructor.js
new file mode 100644
index 0000000000..99b1f387c3
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setFullYear/not-a-constructor.js
@@ -0,0 +1,35 @@
+// Copyright (C) 2020 Rick Waldron. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-ecmascript-standard-built-in-objects
+description: >
+  Date.prototype.setFullYear does not implement [[Construct]], is not new-able
+info: |
+  ECMAScript Function Objects
+
+  Built-in function objects that are not identified as constructors do not
+  implement the [[Construct]] internal method unless otherwise specified in
+  the description of a particular function.
+
+  sec-evaluatenew
+
+  ...
+  7. If IsConstructor(constructor) is false, throw a TypeError exception.
+  ...
+includes: [isConstructor.js]
+features: [Reflect.construct, arrow-function]
+---*/
+
+assert.sameValue(
+  isConstructor(Date.prototype.setFullYear),
+  false,
+  'isConstructor(Date.prototype.setFullYear) must return false'
+);
+
+assert.throws(TypeError, () => {
+  let date = new Date(Date.now()); new date.setFullYear();
+}, '`let date = new Date(Date.now()); new date.setFullYear()` throws TypeError');
+
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setFullYear/shell.js b/js/src/tests/test262/built-ins/Date/prototype/setFullYear/shell.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setFullYear/shell.js
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setFullYear/this-value-invalid-date.js b/js/src/tests/test262/built-ins/Date/prototype/setFullYear/this-value-invalid-date.js
new file mode 100644
index 0000000000..11b2839acd
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setFullYear/this-value-invalid-date.js
@@ -0,0 +1,52 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.setfullyear
+description: >
+  Behavior when the "this" value is a Date object describing an invald date
+info: |
+  1. Let t be ? thisTimeValue(this value).
+  2. If t is NaN, let t be +0; otherwise, let t be LocalTime(t).
+  3. Let y be ? ToNumber(year).
+  4. If month is not specified, let m be MonthFromTime(t); otherwise, let m be
+     ? ToNumber(month).
+  5. If date is not specified, let dt be DateFromTime(t); otherwise, let dt be
+     ? ToNumber(date).
+  6. Let newDate be MakeDate(MakeDay(y, m, dt), TimeWithinDay(t)).
+  7. Let u be TimeClip(UTC(newDate)).
+  8. Set the [[DateValue]] internal slot of this Date object to u.
+  9. Return u.
+---*/
+
+var date = new Date(NaN);
+var expected, result;
+
+result = date.setFullYear(2016);
+
+expected = new Date(2016, 0).getTime();
+assert.sameValue(result, expected, 'return value (year)');
+assert.sameValue(
+  date.getTime(), expected, '[[DateValue]] internal slot (year)'
+);
+
+date = new Date(NaN);
+
+result = date.setFullYear(2016, 6);
+
+expected = new Date(2016, 6).getTime();
+assert.sameValue(result, expected, 'return value (month)');
+assert.sameValue(
+  date.getTime(), expected, '[[DateValue]] internal slot (month)'
+);
+
+date = new Date(NaN);
+
+result = date.setFullYear(2016, 6, 7);
+
+expected = new Date(2016, 6, 7).getTime();
+assert.sameValue(result, expected, 'return value (date)');
+assert.sameValue(
+  date.getTime(), expected, '[[DateValue]] internal slot (month)'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setFullYear/this-value-non-date.js b/js/src/tests/test262/built-ins/Date/prototype/setFullYear/this-value-non-date.js
new file mode 100644
index 0000000000..e7d7d9eaee
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setFullYear/this-value-non-date.js
@@ -0,0 +1,45 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.setfullyear
+description: >
+  Behavior when "this" value is an Object without a [[DateValue]] internal slot
+info: |
+  1. Let t be ? thisTimeValue(this value).
+
+  The abstract operation thisTimeValue(value) performs the following steps:
+
+  1. If Type(value) is Object and value has a [[DateValue]] internal slot, then
+     a. Return value.[[DateValue]].
+  2. Throw a TypeError exception.
+---*/
+
+var setFullYear = Date.prototype.setFullYear;
+var callCount = 0;
+var arg = {
+  valueOf: function() {
+    callCount += 1;
+    return 1;
+  }
+};
+var args = (function() {
+  return arguments;
+}());
+
+assert.sameValue(typeof setFullYear, 'function');
+
+assert.throws(TypeError, function() {
+  setFullYear.call({}, arg);
+}, 'ordinary object');
+
+assert.throws(TypeError, function() {
+  setFullYear.call([], arg);
+}, 'array exotic object');
+
+assert.throws(TypeError, function() {
+  setFullYear.call(args, arg);
+}, 'arguments exotic object');
+
+assert.sameValue(callCount, 0, 'validation precedes input coercion');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setFullYear/this-value-non-object.js b/js/src/tests/test262/built-ins/Date/prototype/setFullYear/this-value-non-object.js
new file mode 100644
index 0000000000..d6646d55d4
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setFullYear/this-value-non-object.js
@@ -0,0 +1,55 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.setfullyear
+description: Behavior when "this" value is not an Object
+info: |
+  1. Let t be ? thisTimeValue(this value).
+
+  The abstract operation thisTimeValue(value) performs the following steps:
+
+  1. If Type(value) is Object and value has a [[DateValue]] internal slot, then
+     a. Return value.[[DateValue]].
+  2. Throw a TypeError exception.
+features: [Symbol]
+---*/
+
+var setFullYear = Date.prototype.setFullYear;
+var callCount = 0;
+var arg = {
+  valueOf: function() {
+    callCount += 1;
+    return 1;
+  }
+};
+var symbol = Symbol();
+
+assert.sameValue(typeof setFullYear, 'function');
+
+assert.throws(TypeError, function() {
+  setFullYear.call(0, arg);
+}, 'number');
+
+assert.throws(TypeError, function() {
+  setFullYear.call(true, arg);
+}, 'boolean');
+
+assert.throws(TypeError, function() {
+  setFullYear.call(null, arg);
+}, 'null');
+
+assert.throws(TypeError, function() {
+  setFullYear.call(undefined, arg);
+}, 'undefined');
+
+assert.throws(TypeError, function() {
+  setFullYear.call('', arg);
+}, 'string');
+
+assert.throws(TypeError, function() {
+  setFullYear.call(symbol, arg);
+}, 'symbol');
+
+assert.sameValue(callCount, 0, 'validation precedes input coercion');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setFullYear/this-value-valid-date-date.js b/js/src/tests/test262/built-ins/Date/prototype/setFullYear/this-value-valid-date-date.js
new file mode 100644
index 0000000000..a11967b4f0
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setFullYear/this-value-valid-date-date.js
@@ -0,0 +1,57 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.setfullyear
+description: Return value for valid dates (setting date)
+info: |
+  1. Let t be ? thisTimeValue(this value).
+  2. If t is NaN, let t be +0; otherwise, let t be LocalTime(t).
+  3. Let y be ? ToNumber(year).
+  4. If month is not specified, let m be MonthFromTime(t); otherwise, let m be
+     ? ToNumber(month).
+  5. If date is not specified, let dt be DateFromTime(t); otherwise, let dt be
+     ? ToNumber(date).
+  6. Let newDate be MakeDate(MakeDay(y, m, dt), TimeWithinDay(t)).
+  7. Let u be TimeClip(UTC(newDate)).
+  8. Set the [[DateValue]] internal slot of this Date object to u.
+  9. Return u.
+---*/
+
+var date = new Date(2016, 6);
+var returnValue, expected;
+
+returnValue = date.setFullYear(2016, 6, 6);
+
+expected = new Date(2016, 6, 6).getTime();
+assert.sameValue(
+  returnValue, expected, 'date within unit boundary (return value)'
+);
+assert.sameValue(
+  date.getTime(), expected, 'date within unit boundary ([[DateValue]] slot)'
+);
+
+returnValue = date.setFullYear(2016, 6, 0);
+
+expected = new Date(2016, 5, 30).getTime();
+assert.sameValue(
+  returnValue, expected, 'date before time unit boundary (return value)'
+);
+assert.sameValue(
+  date.getTime(),
+  expected,
+  'date before time unit boundary ([[DateValue]] slot)'
+);
+
+returnValue = date.setFullYear(2016, 5, 31);
+
+expected = new Date(2016, 6, 1).getTime();
+assert.sameValue(
+  returnValue, expected, 'date after time unit boundary (return value)'
+);
+assert.sameValue(
+  date.getTime(),
+  expected,
+  'date after time unit boundary ([[DateValue]] slot)'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setFullYear/this-value-valid-date-month.js b/js/src/tests/test262/built-ins/Date/prototype/setFullYear/this-value-valid-date-month.js
new file mode 100644
index 0000000000..29248c387a
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setFullYear/this-value-valid-date-month.js
@@ -0,0 +1,57 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.setfullyear
+description: Return value for valid dates (setting month)
+info: |
+  1. Let t be ? thisTimeValue(this value).
+  2. If t is NaN, let t be +0; otherwise, let t be LocalTime(t).
+  3. Let y be ? ToNumber(year).
+  4. If month is not specified, let m be MonthFromTime(t); otherwise, let m be
+     ? ToNumber(month).
+  5. If date is not specified, let dt be DateFromTime(t); otherwise, let dt be
+     ? ToNumber(date).
+  6. Let newDate be MakeDate(MakeDay(y, m, dt), TimeWithinDay(t)).
+  7. Let u be TimeClip(UTC(newDate)).
+  8. Set the [[DateValue]] internal slot of this Date object to u.
+  9. Return u.
+---*/
+
+var date = new Date(2016, 6);
+var returnValue, expected;
+
+returnValue = date.setFullYear(2016, 3);
+
+expected = new Date(2016, 3).getTime();
+assert.sameValue(
+  returnValue, expected, 'month within unit boundary (return value)'
+);
+assert.sameValue(
+  date.getTime(), expected, 'month within unit boundary ([[DateValue]] slot)'
+);
+
+returnValue = date.setFullYear(2016, -1);
+
+expected = new Date(2015, 11).getTime();
+assert.sameValue(
+  returnValue, expected, 'month before time unit boundary (return value)'
+);
+assert.sameValue(
+  date.getTime(),
+  expected,
+  'month before time unit boundary ([[DateValue]] slot)'
+);
+
+returnValue = date.setFullYear(2016, 12);
+
+expected = new Date(2017, 0).getTime();
+assert.sameValue(
+  returnValue, expected, 'month after time unit boundary (return value)'
+);
+assert.sameValue(
+  date.getTime(),
+  expected,
+  'month after time unit boundary ([[DateValue]] slot)'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setFullYear/this-value-valid-date-year.js b/js/src/tests/test262/built-ins/Date/prototype/setFullYear/this-value-valid-date-year.js
new file mode 100644
index 0000000000..bd63580906
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setFullYear/this-value-valid-date-year.js
@@ -0,0 +1,29 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.setfullyear
+description: Return value for valid dates (setting year)
+info: |
+  1. Let t be ? thisTimeValue(this value).
+  2. If t is NaN, let t be +0; otherwise, let t be LocalTime(t).
+  3. Let y be ? ToNumber(year).
+  4. If month is not specified, let m be MonthFromTime(t); otherwise, let m be
+     ? ToNumber(month).
+  5. If date is not specified, let dt be DateFromTime(t); otherwise, let dt be
+     ? ToNumber(date).
+  6. Let newDate be MakeDate(MakeDay(y, m, dt), TimeWithinDay(t)).
+  7. Let u be TimeClip(UTC(newDate)).
+  8. Set the [[DateValue]] internal slot of this Date object to u.
+  9. Return u.
+---*/
+
+var date = new Date(2016, 6);
+var returnValue, expected;
+
+returnValue = date.setFullYear(2015);
+
+expected = new Date(2015, 6).getTime();
+assert.sameValue(returnValue, expected, 'year (return value)');
+assert.sameValue(date.getTime(), expected, 'year ([[DateValue]] slot)');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setHours/S15.9.5.34_A1_T1.js b/js/src/tests/test262/built-ins/Date/prototype/setHours/S15.9.5.34_A1_T1.js
new file mode 100644
index 0000000000..522a7a554a
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setHours/S15.9.5.34_A1_T1.js
@@ -0,0 +1,25 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype property "setHours" has { DontEnum } attributes
+esid: sec-date.prototype.sethours
+description: Checking absence of ReadOnly attribute
+---*/
+
+var x = Date.prototype.setHours;
+if (x === 1) {
+  Date.prototype.setHours = 2;
+} else {
+  Date.prototype.setHours = 1;
+}
+
+assert.notSameValue(
+  Date.prototype.setHours,
+  x,
+  'The value of Date.prototype.setHours is expected to not equal the value of `x`'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setHours/S15.9.5.34_A1_T2.js b/js/src/tests/test262/built-ins/Date/prototype/setHours/S15.9.5.34_A1_T2.js
new file mode 100644
index 0000000000..6cf45d93cd
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setHours/S15.9.5.34_A1_T2.js
@@ -0,0 +1,18 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype property "setHours" has { DontEnum } attributes
+esid: sec-date.prototype.sethours
+description: Checking absence of DontDelete attribute
+---*/
+assert.notSameValue(delete Date.prototype.setHours, false, 'The value of delete Date.prototype.setHours is not false');
+
+assert(
+  !Date.prototype.hasOwnProperty('setHours'),
+  'The value of !Date.prototype.hasOwnProperty(\'setHours\') is expected to be true'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setHours/S15.9.5.34_A1_T3.js b/js/src/tests/test262/built-ins/Date/prototype/setHours/S15.9.5.34_A1_T3.js
new file mode 100644
index 0000000000..7211067494
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setHours/S15.9.5.34_A1_T3.js
@@ -0,0 +1,20 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype property "setHours" has { DontEnum } attributes
+esid: sec-date.prototype.sethours
+description: Checking DontEnum attribute
+---*/
+assert(
+  !Date.prototype.propertyIsEnumerable('setHours'),
+  'The value of !Date.prototype.propertyIsEnumerable(\'setHours\') is expected to be true'
+);
+
+for (var x in Date.prototype) {
+  assert.notSameValue(x, "setHours", 'The value of x is not "setHours"');
+}
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setHours/S15.9.5.34_A2_T1.js b/js/src/tests/test262/built-ins/Date/prototype/setHours/S15.9.5.34_A2_T1.js
new file mode 100644
index 0000000000..ccdabfa8fc
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setHours/S15.9.5.34_A2_T1.js
@@ -0,0 +1,17 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The "length" property of the "setHours" is 4
+esid: sec-date.prototype.sethours
+description: The "length" property of the "setHours" is 4
+---*/
+assert.sameValue(
+  Date.prototype.setHours.hasOwnProperty("length"),
+  true,
+  'Date.prototype.setHours.hasOwnProperty("length") must return true'
+);
+
+assert.sameValue(Date.prototype.setHours.length, 4, 'The value of Date.prototype.setHours.length is expected to be 4');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setHours/S15.9.5.34_A3_T1.js b/js/src/tests/test262/built-ins/Date/prototype/setHours/S15.9.5.34_A3_T1.js
new file mode 100644
index 0000000000..9d5b7750df
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setHours/S15.9.5.34_A3_T1.js
@@ -0,0 +1,24 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype.setHours property "length" has { ReadOnly, DontDelete,
+    DontEnum } attributes
+esid: sec-date.prototype.sethours
+description: Checking ReadOnly attribute
+includes: [propertyHelper.js]
+---*/
+
+var x = Date.prototype.setHours.length;
+verifyNotWritable(Date.prototype.setHours, "length", null, 1);
+
+assert.sameValue(
+  Date.prototype.setHours.length,
+  x,
+  'The value of Date.prototype.setHours.length is expected to equal the value of x'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setHours/S15.9.5.34_A3_T2.js b/js/src/tests/test262/built-ins/Date/prototype/setHours/S15.9.5.34_A3_T2.js
new file mode 100644
index 0000000000..ac6a60cf7d
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setHours/S15.9.5.34_A3_T2.js
@@ -0,0 +1,24 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype.setHours property "length" has { ReadOnly, !
+    DontDelete, DontEnum } attributes
+esid: sec-date.prototype.sethours
+description: Checking DontDelete attribute
+---*/
+assert.sameValue(
+  delete Date.prototype.setHours.length,
+  true,
+  'The value of `delete Date.prototype.setHours.length` is expected to be true'
+);
+
+assert(
+  !Date.prototype.setHours.hasOwnProperty('length'),
+  'The value of !Date.prototype.setHours.hasOwnProperty(\'length\') is expected to be true'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setHours/S15.9.5.34_A3_T3.js b/js/src/tests/test262/built-ins/Date/prototype/setHours/S15.9.5.34_A3_T3.js
new file mode 100644
index 0000000000..5b7172510a
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setHours/S15.9.5.34_A3_T3.js
@@ -0,0 +1,22 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype.setHours property "length" has { ReadOnly, DontDelete,
+    DontEnum } attributes
+esid: sec-date.prototype.sethours
+description: Checking DontEnum attribute
+---*/
+assert(
+  !Date.prototype.setHours.propertyIsEnumerable('length'),
+  'The value of !Date.prototype.setHours.propertyIsEnumerable(\'length\') is expected to be true'
+);
+
+for (var x in Date.prototype.setHours) {
+  assert.notSameValue(x, "length", 'The value of x is not "length"');
+}
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setHours/arg-coercion-order.js b/js/src/tests/test262/built-ins/Date/prototype/setHours/arg-coercion-order.js
new file mode 100644
index 0000000000..48bd259079
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setHours/arg-coercion-order.js
@@ -0,0 +1,59 @@
+// Copyright (C) 2021 Kevin Gibbons. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.sethours
+description: Order of coercion of provided arguments vs NaN check
+info: |
+  1. Let t be ? thisTimeValue(this value).
+  2. Let h be ? ToNumber(hour).
+  3. If min is present, let m be ? ToNumber(min).
+  4. If sec is present, let s be ? ToNumber(sec).
+  5. If ms is present, let milli be ? ToNumber(ms).
+  6. If t is NaN, return NaN.
+  7. Set t to LocalTime(t).
+  8. If min is not present, let m be MinFromTime(t).
+  9. If sec is not present, let s be SecFromTime(t).
+  10. If ms is not present, let milli be msFromTime(t).
+  11. Let date be MakeDate(Day(t), MakeTime(h, m, s, milli)).
+  12. Let u be TimeClip(UTC(date)).
+  13. Set the [[DateValue]] internal slot of this Date object to u.
+  14. Return u.
+includes: [compareArray.js]
+---*/
+
+var date = new Date(NaN);
+var effects = [];
+var argHour = {
+  valueOf: function() {
+    effects.push('valueOf hour');
+    return 0;
+  }
+};
+var argMin = {
+  valueOf: function() {
+    effects.push('valueOf min');
+    return 0;
+  }
+};
+var argSec = {
+  valueOf: function() {
+    effects.push('valueOf sec');
+    return 0;
+  }
+};
+var argMs = {
+  valueOf: function() {
+    effects.push('valueOf ms');
+    return 0;
+  }
+};
+
+var returnValue = date.setHours(argHour, argMin, argSec, argMs);
+
+var expectedEffects = ['valueOf hour', 'valueOf min', 'valueOf sec', 'valueOf ms'];
+
+assert.compareArray(effects, expectedEffects);
+assert.sameValue(returnValue, NaN, 'argument is ignored when `this` is an invalid date');
+assert.sameValue(date.getTime(), NaN, 'argument is ignored when `this` is an invalid date');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setHours/arg-hour-to-number-err.js b/js/src/tests/test262/built-ins/Date/prototype/setHours/arg-hour-to-number-err.js
new file mode 100644
index 0000000000..73dabb4639
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setHours/arg-hour-to-number-err.js
@@ -0,0 +1,32 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.sethours
+description: Abrupt completion during type coercion of provided "hour"
+info: |
+  1. Let t be LocalTime(? thisTimeValue(this value)).
+  2. Let dt be ? ToNumber(hour).
+---*/
+
+var date = new Date();
+var callCount = 0;
+var originalValue = date.getTime();
+var obj = {
+  valueOf: function() {
+    throw new Test262Error();
+  }
+};
+var counter = {
+  valueOf: function() {
+    callCount += 1;
+  }
+};
+
+assert.throws(Test262Error, function() {
+  date.setHours(obj, counter, counter, counter);
+});
+
+assert.sameValue(date.getTime(), originalValue);
+assert.sameValue(callCount, 0);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setHours/arg-hour-to-number.js b/js/src/tests/test262/built-ins/Date/prototype/setHours/arg-hour-to-number.js
new file mode 100644
index 0000000000..216be0e17c
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setHours/arg-hour-to-number.js
@@ -0,0 +1,64 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.sethours
+description: Type coercion of provided "hour"
+info: |
+  1. Let t be LocalTime(? thisTimeValue(this value)).
+  2. Let h be ? ToNumber(hour).
+  3. If min is not specified, let m be MinFromTime(t); otherwise, let m be ?
+     ToNumber(min).
+  4. If sec is not specified, let s be SecFromTime(t); otherwise, let s be ?
+     ToNumber(sec).
+  5. If ms is not specified, let milli be msFromTime(t); otherwise, let milli
+     be ? ToNumber(ms).
+  6. Let date be MakeDate(Day(t), MakeTime(h, m, s, milli)).
+  7. Let u be TimeClip(UTC(date)).
+  8. Set the [[DateValue]] internal slot of this Date object to u.
+  9. Return u.
+---*/
+
+var date = new Date(2016, 6);
+var callCount = 0;
+var arg = {
+  valueOf: function() {
+    args = arguments;
+    thisValue = this;
+    callCount += 1;
+    return 2;
+  }
+};
+var args, thisValue, returnValue;
+
+returnValue = date.setHours(arg);
+
+assert.sameValue(callCount, 1, 'invoked exactly once');
+assert.sameValue(args.length, 0, 'invoked without arguments');
+assert.sameValue(thisValue, arg, '"this" value');
+assert.sameValue(
+  returnValue,
+  new Date(2016, 6, 1, 2).getTime(),
+  'application of specified value'
+);
+
+returnValue = date.setHours(null);
+
+assert.sameValue(returnValue, new Date(2016, 6, 1, 0).getTime(), 'null');
+
+returnValue = date.setHours(true);
+
+assert.sameValue(returnValue, new Date(2016, 6, 1, 1).getTime(), 'true');
+
+returnValue = date.setHours(false);
+
+assert.sameValue(returnValue, new Date(2016, 6, 1, 0).getTime(), 'false');
+
+returnValue = date.setHours('   +00200.000E-0002	');
+
+assert.sameValue(returnValue, new Date(2016, 6, 1, 2).getTime(), 'string');
+
+returnValue = date.setHours();
+
+assert.sameValue(returnValue, NaN, 'undefined');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setHours/arg-min-to-number-err.js b/js/src/tests/test262/built-ins/Date/prototype/setHours/arg-min-to-number-err.js
new file mode 100644
index 0000000000..4182ad87d6
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setHours/arg-min-to-number-err.js
@@ -0,0 +1,34 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.sethours
+description: Abrupt completion during type coercion of provided "min"
+info: |
+  1. Let t be LocalTime(? thisTimeValue(this value)).
+  2. Let dt be ? ToNumber(hour).
+  3. If min is not specified, let m be MinFromTime(t); otherwise, let m be ?
+     ToNumber(min).
+---*/
+
+var date = new Date();
+var callCount = 0;
+var originalValue = date.getTime();
+var obj = {
+  valueOf: function() {
+    throw new Test262Error();
+  }
+};
+var counter = {
+  valueOf: function() {
+    callCount += 1;
+  }
+};
+
+assert.throws(Test262Error, function() {
+  date.setHours(0, obj, counter, counter);
+});
+
+assert.sameValue(date.getTime(), originalValue);
+assert.sameValue(callCount, 0);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setHours/arg-min-to-number.js b/js/src/tests/test262/built-ins/Date/prototype/setHours/arg-min-to-number.js
new file mode 100644
index 0000000000..a8436d2555
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setHours/arg-min-to-number.js
@@ -0,0 +1,64 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.sethours
+description: Type coercion of provided "min"
+info: |
+  1. Let t be LocalTime(? thisTimeValue(this value)).
+  2. Let h be ? ToNumber(hour).
+  3. If min is not specified, let m be MinFromTime(t); otherwise, let m be ?
+     ToNumber(min).
+  4. If sec is not specified, let s be SecFromTime(t); otherwise, let s be ?
+     ToNumber(sec).
+  5. If ms is not specified, let milli be msFromTime(t); otherwise, let milli
+     be ? ToNumber(ms).
+  6. Let date be MakeDate(Day(t), MakeTime(h, m, s, milli)).
+  7. Let u be TimeClip(UTC(date)).
+  8. Set the [[DateValue]] internal slot of this Date object to u.
+  9. Return u.
+---*/
+
+var date = new Date(2016, 6);
+var callCount = 0;
+var arg = {
+  valueOf: function() {
+    args = arguments;
+    thisValue = this;
+    callCount += 1;
+    return 2;
+  }
+};
+var args, thisValue, returnValue;
+
+returnValue = date.setHours(0, arg);
+
+assert.sameValue(callCount, 1, 'invoked exactly once');
+assert.sameValue(args.length, 0, 'invoked without arguments');
+assert.sameValue(thisValue, arg, '"this" value');
+assert.sameValue(
+  returnValue,
+  new Date(2016, 6, 1, 0, 2).getTime(),
+  'application of specified value'
+);
+
+returnValue = date.setHours(0, null);
+
+assert.sameValue(returnValue, new Date(2016, 6, 1).getTime(), 'null');
+
+returnValue = date.setHours(0, true);
+
+assert.sameValue(returnValue, new Date(2016, 6, 1, 0, 1).getTime(), 'true');
+
+returnValue = date.setHours(0, false);
+
+assert.sameValue(returnValue, new Date(2016, 6, 1).getTime(), 'false');
+
+returnValue = date.setHours(0, '   +00200.000E-0002	');
+
+assert.sameValue(returnValue, new Date(2016, 6, 1, 0, 2).getTime(), 'string');
+
+returnValue = date.setHours();
+
+assert.sameValue(returnValue, NaN, 'undefined');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setHours/arg-ms-to-number-err.js b/js/src/tests/test262/built-ins/Date/prototype/setHours/arg-ms-to-number-err.js
new file mode 100644
index 0000000000..b8a62f59f6
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setHours/arg-ms-to-number-err.js
@@ -0,0 +1,31 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.sethours
+description: Abrupt completion during type coercion of provided "ms"
+info: |
+  1. Let t be LocalTime(? thisTimeValue(this value)).
+  2. Let dt be ? ToNumber(hour).
+  3. If min is not specified, let m be MinFromTime(t); otherwise, let m be ?
+     ToNumber(min).
+  4. If sec is not specified, let s be SecFromTime(t); otherwise, let s be ?
+     ToNumber(sec).
+  5. If ms is not specified, let milli be msFromTime(t); otherwise, let milli
+     be ? ToNumber(ms).
+---*/
+
+var date = new Date();
+var originalValue = date.getTime();
+var obj = {
+  valueOf: function() {
+    throw new Test262Error();
+  }
+};
+
+assert.throws(Test262Error, function() {
+  date.setHours(0, 0, 0, obj);
+});
+
+assert.sameValue(date.getTime(), originalValue);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setHours/arg-ms-to-number.js b/js/src/tests/test262/built-ins/Date/prototype/setHours/arg-ms-to-number.js
new file mode 100644
index 0000000000..8ea3112632
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setHours/arg-ms-to-number.js
@@ -0,0 +1,68 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.sethours
+description: Type coercion of provided "ms"
+info: |
+  1. Let t be LocalTime(? thisTimeValue(this value)).
+  2. Let h be ? ToNumber(hour).
+  3. If min is not specified, let m be MinFromTime(t); otherwise, let m be ?
+     ToNumber(min).
+  4. If sec is not specified, let s be SecFromTime(t); otherwise, let s be ?
+     ToNumber(sec).
+  5. If ms is not specified, let milli be msFromTime(t); otherwise, let milli
+     be ? ToNumber(ms).
+  6. Let date be MakeDate(Day(t), MakeTime(h, m, s, milli)).
+  7. Let u be TimeClip(UTC(date)).
+  8. Set the [[DateValue]] internal slot of this Date object to u.
+  9. Return u.
+---*/
+
+var date = new Date(2016, 6);
+var callCount = 0;
+var arg = {
+  valueOf: function() {
+    args = arguments;
+    thisValue = this;
+    callCount += 1;
+    return 2;
+  }
+};
+var args, thisValue, returnValue;
+
+returnValue = date.setHours(0, 0, 0, arg);
+
+assert.sameValue(callCount, 1, 'invoked exactly once');
+assert.sameValue(args.length, 0, 'invoked without arguments');
+assert.sameValue(thisValue, arg, '"this" value');
+assert.sameValue(
+  returnValue,
+  new Date(2016, 6, 1, 0, 0, 0, 2).getTime(),
+  'application of specified value'
+);
+
+returnValue = date.setHours(0, 0, 0, null);
+
+assert.sameValue(returnValue, new Date(2016, 6, 1).getTime(), 'null');
+
+returnValue = date.setHours(0, 0, 0, true);
+
+assert.sameValue(
+  returnValue, new Date(2016, 6, 1, 0, 0, 0, 1).getTime(), 'true'
+);
+
+returnValue = date.setHours(0, 0, 0, false);
+
+assert.sameValue(returnValue, new Date(2016, 6, 1).getTime(), 'false');
+
+returnValue = date.setHours(0, 0, 0, '   +00200.000E-0002	');
+
+assert.sameValue(
+  returnValue, new Date(2016, 6, 1, 0, 0, 0, 2).getTime(), 'string'
+);
+
+returnValue = date.setHours();
+
+assert.sameValue(returnValue, NaN, 'undefined');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setHours/arg-sec-to-number-err.js b/js/src/tests/test262/built-ins/Date/prototype/setHours/arg-sec-to-number-err.js
new file mode 100644
index 0000000000..c0ba88235e
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setHours/arg-sec-to-number-err.js
@@ -0,0 +1,36 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.sethours
+description: Abrupt completion during type coercion of provided "sec"
+info: |
+  1. Let t be LocalTime(? thisTimeValue(this value)).
+  2. Let dt be ? ToNumber(hour).
+  3. If min is not specified, let m be MinFromTime(t); otherwise, let m be ?
+     ToNumber(min).
+  4. If sec is not specified, let s be SecFromTime(t); otherwise, let s be ?
+     ToNumber(sec).
+---*/
+
+var date = new Date();
+var callCount = 0;
+var originalValue = date.getTime();
+var obj = {
+  valueOf: function() {
+    throw new Test262Error();
+  }
+};
+var counter = {
+  valueOf: function() {
+    callCount += 1;
+  }
+};
+
+assert.throws(Test262Error, function() {
+  date.setHours(0, 0, obj, counter);
+});
+
+assert.sameValue(date.getTime(), originalValue);
+assert.sameValue(callCount, 0);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setHours/arg-sec-to-number.js b/js/src/tests/test262/built-ins/Date/prototype/setHours/arg-sec-to-number.js
new file mode 100644
index 0000000000..7171a1cb31
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setHours/arg-sec-to-number.js
@@ -0,0 +1,66 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.sethours
+description: Type coercion of provided "sec"
+info: |
+  1. Let t be LocalTime(? thisTimeValue(this value)).
+  2. Let h be ? ToNumber(hour).
+  3. If min is not specified, let m be MinFromTime(t); otherwise, let m be ?
+     ToNumber(min).
+  4. If sec is not specified, let s be SecFromTime(t); otherwise, let s be ?
+     ToNumber(sec).
+  5. If ms is not specified, let milli be msFromTime(t); otherwise, let milli
+     be ? ToNumber(ms).
+  6. Let date be MakeDate(Day(t), MakeTime(h, m, s, milli)).
+  7. Let u be TimeClip(UTC(date)).
+  8. Set the [[DateValue]] internal slot of this Date object to u.
+  9. Return u.
+---*/
+
+var date = new Date(2016, 6);
+var callCount = 0;
+var arg = {
+  valueOf: function() {
+    args = arguments;
+    thisValue = this;
+    callCount += 1;
+    return 2;
+  }
+};
+var args, thisValue, returnValue;
+
+returnValue = date.setHours(0, 0, arg);
+
+assert.sameValue(callCount, 1, 'invoked exactly once');
+assert.sameValue(args.length, 0, 'invoked without arguments');
+assert.sameValue(thisValue, arg, '"this" value');
+assert.sameValue(
+  returnValue,
+  new Date(2016, 6, 1, 0, 0, 2).getTime(),
+  'application of specified value'
+);
+
+returnValue = date.setHours(0, 0, null);
+
+assert.sameValue(returnValue, new Date(2016, 6, 1).getTime(), 'null');
+
+returnValue = date.setHours(0, 0, true);
+
+assert.sameValue(returnValue, new Date(2016, 6, 1, 0, 0, 1).getTime(), 'true');
+
+returnValue = date.setHours(0, 0, false);
+
+assert.sameValue(returnValue, new Date(2016, 6, 1).getTime(), 'false');
+
+returnValue = date.setHours(0, 0, '   +00200.000E-0002	');
+
+assert.sameValue(
+  returnValue, new Date(2016, 6, 1, 0, 0, 2).getTime(), 'string'
+);
+
+returnValue = date.setHours();
+
+assert.sameValue(returnValue, NaN, 'undefined');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setHours/browser.js b/js/src/tests/test262/built-ins/Date/prototype/setHours/browser.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setHours/browser.js
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setHours/name.js b/js/src/tests/test262/built-ins/Date/prototype/setHours/name.js
new file mode 100644
index 0000000000..9626594fc3
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setHours/name.js
@@ -0,0 +1,28 @@
+// Copyright (C) 2015 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.prototype.sethours
+description: >
+  Date.prototype.setHours.name is "setHours".
+info: |
+  Date.prototype.setHours ( hour [ , min [ , sec [ , ms ] ] ] )
+
+  17 ECMAScript Standard Built-in Objects:
+    Every built-in Function object, including constructors, that is not
+    identified as an anonymous function has a name property whose value
+    is a String.
+
+    Unless otherwise specified, the name property of a built-in Function
+    object, if it exists, has the attributes { [[Writable]]: false,
+    [[Enumerable]]: false, [[Configurable]]: true }.
+includes: [propertyHelper.js]
+---*/
+
+assert.sameValue(Date.prototype.setHours.name, "setHours");
+
+verifyNotEnumerable(Date.prototype.setHours, "name");
+verifyNotWritable(Date.prototype.setHours, "name");
+verifyConfigurable(Date.prototype.setHours, "name");
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setHours/new-value-time-clip.js b/js/src/tests/test262/built-ins/Date/prototype/setHours/new-value-time-clip.js
new file mode 100644
index 0000000000..2c08a9fb54
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setHours/new-value-time-clip.js
@@ -0,0 +1,54 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.sethours
+description: Behavior when new value exceeds [[DateValue]] limits
+info: |
+  1. Let t be LocalTime(? thisTimeValue(this value)).
+  2. Let h be ? ToNumber(hour).
+  3. If min is not specified, let m be MinFromTime(t); otherwise, let m be ?
+     ToNumber(min).
+  4. If sec is not specified, let s be SecFromTime(t); otherwise, let s be ?
+     ToNumber(sec).
+  5. If ms is not specified, let milli be msFromTime(t); otherwise, let milli
+     be ? ToNumber(ms).
+  6. Let date be MakeDate(Day(t), MakeTime(h, m, s, milli)).
+  7. Let u be TimeClip(UTC(date)).
+  8. Set the [[DateValue]] internal slot of this Date object to u.
+  9. Return u.
+
+  TimeClip (time)
+
+  1. If time is not finite, return NaN.
+  2. If abs(time) > 8.64 × 1015, return NaN.
+---*/
+
+var maxMs = 8.64e15;
+var date = new Date(maxMs);
+var returnValue;
+
+assert.notSameValue(date.getTime(), NaN);
+
+returnValue = date.setHours(24);
+
+assert.sameValue(returnValue, NaN, 'overflow due to hours');
+
+date = new Date(maxMs);
+
+returnValue = date.setHours(0, 24 * 60);
+
+assert.sameValue(returnValue, NaN, 'overflow due to minutes');
+
+date = new Date(maxMs);
+
+returnValue = date.setHours(0, 0, 24 * 60 * 60);
+
+assert.sameValue(returnValue, NaN, 'overflow due to seconds');
+
+date = new Date(maxMs);
+
+returnValue = date.setHours(0, 0, 0, 24 * 60 * 60 * 1000);
+
+assert.sameValue(returnValue, NaN, 'overflow due to milliseconds');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setHours/not-a-constructor.js b/js/src/tests/test262/built-ins/Date/prototype/setHours/not-a-constructor.js
new file mode 100644
index 0000000000..767fe264d0
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setHours/not-a-constructor.js
@@ -0,0 +1,35 @@
+// Copyright (C) 2020 Rick Waldron. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-ecmascript-standard-built-in-objects
+description: >
+  Date.prototype.setHours does not implement [[Construct]], is not new-able
+info: |
+  ECMAScript Function Objects
+
+  Built-in function objects that are not identified as constructors do not
+  implement the [[Construct]] internal method unless otherwise specified in
+  the description of a particular function.
+
+  sec-evaluatenew
+
+  ...
+  7. If IsConstructor(constructor) is false, throw a TypeError exception.
+  ...
+includes: [isConstructor.js]
+features: [Reflect.construct, arrow-function]
+---*/
+
+assert.sameValue(
+  isConstructor(Date.prototype.setHours),
+  false,
+  'isConstructor(Date.prototype.setHours) must return false'
+);
+
+assert.throws(TypeError, () => {
+  let date = new Date(Date.now()); new date.setHours();
+}, '`let date = new Date(Date.now()); new date.setHours()` throws TypeError');
+
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setHours/shell.js b/js/src/tests/test262/built-ins/Date/prototype/setHours/shell.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setHours/shell.js
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setHours/this-value-invalid-date.js b/js/src/tests/test262/built-ins/Date/prototype/setHours/this-value-invalid-date.js
new file mode 100644
index 0000000000..d31e9479c7
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setHours/this-value-invalid-date.js
@@ -0,0 +1,45 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.sethours
+description: >
+  Behavior when the "this" value is a Date object describing an invald date
+info: |
+  1. Let t be LocalTime(? thisTimeValue(this value)).
+  2. Let h be ? ToNumber(hour).
+  3. If min is not specified, let m be MinFromTime(t); otherwise, let m be ?
+     ToNumber(min).
+  4. If sec is not specified, let s be SecFromTime(t); otherwise, let s be ?
+     ToNumber(sec).
+  5. If ms is not specified, let milli be msFromTime(t); otherwise, let milli
+     be ? ToNumber(ms).
+  6. Let date be MakeDate(Day(t), MakeTime(h, m, s, milli)).
+  7. Let u be TimeClip(UTC(date)).
+  8. Set the [[DateValue]] internal slot of this Date object to u.
+  9. Return u.
+---*/
+
+var date = new Date(NaN);
+var result;
+
+result = date.setHours(0);
+
+assert.sameValue(result, NaN, 'return value (hour)');
+assert.sameValue(date.getTime(), NaN, '[[DateValue]] internal slot (hour)');
+
+result = date.setHours(0, 0);
+
+assert.sameValue(result, NaN, 'return value (minute)');
+assert.sameValue(date.getTime(), NaN, '[[DateValue]] internal slot (minute)');
+
+result = date.setHours(0, 0, 0);
+
+assert.sameValue(result, NaN, 'return value (second)');
+assert.sameValue(date.getTime(), NaN, '[[DateValue]] internal slot (second)');
+
+result = date.setHours(0, 0, 0, 0);
+
+assert.sameValue(result, NaN, 'return value (ms)');
+assert.sameValue(date.getTime(), NaN, '[[DateValue]] internal slot (ms)');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setHours/this-value-non-date.js b/js/src/tests/test262/built-ins/Date/prototype/setHours/this-value-non-date.js
new file mode 100644
index 0000000000..0112bd38ad
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setHours/this-value-non-date.js
@@ -0,0 +1,45 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.sethours
+description: >
+  Behavior when "this" value is an Object without a [[DateValue]] internal slot
+info: |
+  1. Let t be LocalTime(? thisTimeValue(this value)).
+
+  The abstract operation thisTimeValue(value) performs the following steps:
+
+  1. If Type(value) is Object and value has a [[DateValue]] internal slot, then
+     a. Return value.[[DateValue]].
+  2. Throw a TypeError exception.
+---*/
+
+var setHours = Date.prototype.setHours;
+var callCount = 0;
+var arg = {
+  valueOf: function() {
+    callCount += 1;
+    return 1;
+  }
+};
+var args = (function() {
+  return arguments;
+}());
+
+assert.sameValue(typeof setHours, 'function');
+
+assert.throws(TypeError, function() {
+  setHours.call({}, arg);
+}, 'ordinary object');
+
+assert.throws(TypeError, function() {
+  setHours.call([], arg);
+}, 'array exotic object');
+
+assert.throws(TypeError, function() {
+  setHours.call(args, arg);
+}, 'arguments exotic object');
+
+assert.sameValue(callCount, 0, 'validation precedes input coercion');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setHours/this-value-non-object.js b/js/src/tests/test262/built-ins/Date/prototype/setHours/this-value-non-object.js
new file mode 100644
index 0000000000..6eee33d9cb
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setHours/this-value-non-object.js
@@ -0,0 +1,55 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.sethours
+description: Behavior when "this" value is not an Object
+info: |
+  1. Let t be LocalTime(? thisTimeValue(this value)).
+
+  The abstract operation thisTimeValue(value) performs the following steps:
+
+  1. If Type(value) is Object and value has a [[DateValue]] internal slot, then
+     a. Return value.[[DateValue]].
+  2. Throw a TypeError exception.
+features: [Symbol]
+---*/
+
+var setHours = Date.prototype.setHours;
+var callCount = 0;
+var arg = {
+  valueOf: function() {
+    callCount += 1;
+    return 1;
+  }
+};
+var symbol = Symbol();
+
+assert.sameValue(typeof setHours, 'function');
+
+assert.throws(TypeError, function() {
+  setHours.call(0, arg);
+}, 'number');
+
+assert.throws(TypeError, function() {
+  setHours.call(true, arg);
+}, 'boolean');
+
+assert.throws(TypeError, function() {
+  setHours.call(null, arg);
+}, 'null');
+
+assert.throws(TypeError, function() {
+  setHours.call(undefined, arg);
+}, 'undefined');
+
+assert.throws(TypeError, function() {
+  setHours.call('', arg);
+}, 'string');
+
+assert.throws(TypeError, function() {
+  setHours.call(symbol, arg);
+}, 'symbol');
+
+assert.sameValue(callCount, 0, 'validation precedes input coercion');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setHours/this-value-valid-date-hour.js b/js/src/tests/test262/built-ins/Date/prototype/setHours/this-value-valid-date-hour.js
new file mode 100644
index 0000000000..da27e3a00b
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setHours/this-value-valid-date-hour.js
@@ -0,0 +1,58 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.sethours
+description: Return value for valid dates (setting hour)
+info: |
+  1. Let t be LocalTime(? thisTimeValue(this value)).
+  2. Let h be ? ToNumber(hour).
+  3. If min is not specified, let m be MinFromTime(t); otherwise, let m be ?
+     ToNumber(min).
+  4. If sec is not specified, let s be SecFromTime(t); otherwise, let s be ?
+     ToNumber(sec).
+  5. If ms is not specified, let milli be msFromTime(t); otherwise, let milli
+     be ? ToNumber(ms).
+  6. Let date be MakeDate(Day(t), MakeTime(h, m, s, milli)).
+  7. Let u be TimeClip(UTC(date)).
+  8. Set the [[DateValue]] internal slot of this Date object to u.
+  9. Return u.
+---*/
+
+var date = new Date(2016, 6);
+var returnValue, expected;
+
+returnValue = date.setHours(6);
+
+expected = new Date(2016, 6, 1, 6).getTime();
+assert.sameValue(
+  returnValue, expected, 'hour within unit boundary (return value)'
+);
+assert.sameValue(
+  date.getTime(), expected, 'hour within unit boundary ([[DateValue]] slot)'
+);
+
+returnValue = date.setHours(-1);
+
+expected = new Date(2016, 5, 30, 23).getTime();
+assert.sameValue(
+  returnValue, expected, 'hour before time unit boundary (return value)'
+);
+assert.sameValue(
+  date.getTime(),
+  expected,
+  'hour before time unit boundary ([[DateValue]] slot)'
+);
+
+returnValue = date.setHours(24);
+
+expected = new Date(2016, 6, 1).getTime();
+assert.sameValue(
+  returnValue, expected, 'hour after time unit boundary (return value)'
+);
+assert.sameValue(
+  date.getTime(),
+  expected,
+  'hour after time unit boundary ([[DateValue]] slot)'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setHours/this-value-valid-date-min.js b/js/src/tests/test262/built-ins/Date/prototype/setHours/this-value-valid-date-min.js
new file mode 100644
index 0000000000..9469513e35
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setHours/this-value-valid-date-min.js
@@ -0,0 +1,58 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.sethours
+description: Return value for valid dates (setting min)
+info: |
+  1. Let t be LocalTime(? thisTimeValue(this value)).
+  2. Let h be ? ToNumber(hour).
+  3. If min is not specified, let m be MinFromTime(t); otherwise, let m be ?
+     ToNumber(min).
+  4. If sec is not specified, let s be SecFromTime(t); otherwise, let s be ?
+     ToNumber(sec).
+  5. If ms is not specified, let milli be msFromTime(t); otherwise, let milli
+     be ? ToNumber(ms).
+  6. Let date be MakeDate(Day(t), MakeTime(h, m, s, milli)).
+  7. Let u be TimeClip(UTC(date)).
+  8. Set the [[DateValue]] internal slot of this Date object to u.
+  9. Return u.
+---*/
+
+var date = new Date(2016, 6);
+var returnValue, expected;
+
+returnValue = date.setHours(0, 23);
+
+expected = new Date(2016, 6, 1, 0, 23).getTime();
+assert.sameValue(
+  returnValue, expected, 'minute within unit boundary (return value)'
+);
+assert.sameValue(
+  date.getTime(), expected, 'minute within unit boundary ([[DateValue]] slot)'
+);
+
+returnValue = date.setHours(0, -1);
+
+expected = new Date(2016, 5, 30, 23, 59).getTime();
+assert.sameValue(
+  returnValue, expected, 'minute before time unit boundary (return value)'
+);
+assert.sameValue(
+  date.getTime(),
+  expected,
+  'minute before time unit boundary ([[DateValue]] slot)'
+);
+
+returnValue = date.setHours(0, 60);
+
+expected = new Date(2016, 5, 30, 1).getTime();
+assert.sameValue(
+  returnValue, expected, 'minute after time unit boundary (return value)'
+);
+assert.sameValue(
+  date.getTime(),
+  expected,
+  'minute after time unit boundary ([[DateValue]] slot)'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setHours/this-value-valid-date-ms.js b/js/src/tests/test262/built-ins/Date/prototype/setHours/this-value-valid-date-ms.js
new file mode 100644
index 0000000000..00de558d9a
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setHours/this-value-valid-date-ms.js
@@ -0,0 +1,60 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.sethours
+description: Return value for valid dates (setting ms)
+info: |
+  1. Let t be LocalTime(? thisTimeValue(this value)).
+  2. Let h be ? ToNumber(hour).
+  3. If min is not specified, let m be MinFromTime(t); otherwise, let m be ?
+     ToNumber(min).
+  4. If sec is not specified, let s be SecFromTime(t); otherwise, let s be ?
+     ToNumber(sec).
+  5. If ms is not specified, let milli be msFromTime(t); otherwise, let milli
+     be ? ToNumber(ms).
+  6. Let date be MakeDate(Day(t), MakeTime(h, m, s, milli)).
+  7. Let u be TimeClip(UTC(date)).
+  8. Set the [[DateValue]] internal slot of this Date object to u.
+  9. Return u.
+---*/
+
+var date = new Date(2016, 6);
+var returnValue, expected;
+
+returnValue = date.setHours(0, 0, 0, 543);
+
+expected = new Date(2016, 6, 1, 0, 0, 0, 543).getTime();
+assert.sameValue(
+  returnValue, expected, 'millisecond within unit boundary (return value)'
+);
+assert.sameValue(
+  date.getTime(),
+  expected,
+  'millisecond within unit boundary ([[DateValue]] slot)'
+);
+
+returnValue = date.setHours(0, 0, 0, -1);
+
+expected = new Date(2016, 5, 30, 23, 59, 59, 999).getTime();
+assert.sameValue(
+  returnValue, expected, 'millisecond before time unit boundary (return value)'
+);
+assert.sameValue(
+  date.getTime(),
+  expected,
+  'millisecond before time unit boundary ([[DateValue]] slot)'
+);
+
+returnValue = date.setHours(0, 0, 0, 1000);
+
+expected = new Date(2016, 5, 30, 0, 0, 1).getTime();
+assert.sameValue(
+  returnValue, expected, 'millisecond after time unit boundary (return value)'
+);
+assert.sameValue(
+  date.getTime(),
+  expected,
+  'millisecond after time unit boundary ([[DateValue]] slot)'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setHours/this-value-valid-date-sec.js b/js/src/tests/test262/built-ins/Date/prototype/setHours/this-value-valid-date-sec.js
new file mode 100644
index 0000000000..edfbe86f27
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setHours/this-value-valid-date-sec.js
@@ -0,0 +1,58 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.sethours
+description: Return value for valid dates (setting sec)
+info: |
+  1. Let t be LocalTime(? thisTimeValue(this value)).
+  2. Let h be ? ToNumber(hour).
+  3. If min is not specified, let m be MinFromTime(t); otherwise, let m be ?
+     ToNumber(min).
+  4. If sec is not specified, let s be SecFromTime(t); otherwise, let s be ?
+     ToNumber(sec).
+  5. If ms is not specified, let milli be msFromTime(t); otherwise, let milli
+     be ? ToNumber(ms).
+  6. Let date be MakeDate(Day(t), MakeTime(h, m, s, milli)).
+  7. Let u be TimeClip(UTC(date)).
+  8. Set the [[DateValue]] internal slot of this Date object to u.
+  9. Return u.
+---*/
+
+var date = new Date(2016, 6);
+var returnValue, expected;
+
+returnValue = date.setHours(0, 0, 45);
+
+expected = new Date(2016, 6, 1, 0, 0, 45).getTime();
+assert.sameValue(
+  returnValue, expected, 'second within unit boundary (return value)'
+);
+assert.sameValue(
+  date.getTime(), expected, 'second within unit boundary ([[DateValue]] slot)'
+);
+
+returnValue = date.setHours(0, 0, -1);
+
+expected = new Date(2016, 5, 30, 23, 59, 59).getTime();
+assert.sameValue(
+  returnValue, expected, 'second before time unit boundary (return value)'
+);
+assert.sameValue(
+  date.getTime(),
+  expected,
+  'second before time unit boundary ([[DateValue]] slot)'
+);
+
+returnValue = date.setHours(0, 0, 60);
+
+expected = new Date(2016, 5, 30, 0, 1).getTime();
+assert.sameValue(
+  returnValue, expected, 'second after time unit boundary (return value)'
+);
+assert.sameValue(
+  date.getTime(),
+  expected,
+  'second after time unit boundary ([[DateValue]] slot)'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setMilliseconds/S15.9.5.28_A1_T1.js b/js/src/tests/test262/built-ins/Date/prototype/setMilliseconds/S15.9.5.28_A1_T1.js
new file mode 100644
index 0000000000..abd7ac57a3
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setMilliseconds/S15.9.5.28_A1_T1.js
@@ -0,0 +1,25 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype property "setMilliseconds" has { DontEnum } attributes
+esid: sec-date.prototype.setmilliseconds
+description: Checking absence of ReadOnly attribute
+---*/
+
+var x = Date.prototype.setMilliseconds;
+if (x === 1) {
+  Date.prototype.setMilliseconds = 2;
+} else {
+  Date.prototype.setMilliseconds = 1;
+}
+
+assert.notSameValue(
+  Date.prototype.setMilliseconds,
+  x,
+  'The value of Date.prototype.setMilliseconds is expected to not equal the value of `x`'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setMilliseconds/S15.9.5.28_A1_T2.js b/js/src/tests/test262/built-ins/Date/prototype/setMilliseconds/S15.9.5.28_A1_T2.js
new file mode 100644
index 0000000000..3352f8071e
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setMilliseconds/S15.9.5.28_A1_T2.js
@@ -0,0 +1,22 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype property "setMilliseconds" has { DontEnum } attributes
+esid: sec-date.prototype.setmilliseconds
+description: Checking absence of DontDelete attribute
+---*/
+assert.notSameValue(
+  delete Date.prototype.setMilliseconds,
+  false,
+  'The value of delete Date.prototype.setMilliseconds is not false'
+);
+
+assert(
+  !Date.prototype.hasOwnProperty('setMilliseconds'),
+  'The value of !Date.prototype.hasOwnProperty(\'setMilliseconds\') is expected to be true'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setMilliseconds/S15.9.5.28_A1_T3.js b/js/src/tests/test262/built-ins/Date/prototype/setMilliseconds/S15.9.5.28_A1_T3.js
new file mode 100644
index 0000000000..e058353e2a
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setMilliseconds/S15.9.5.28_A1_T3.js
@@ -0,0 +1,20 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype property "setMilliseconds" has { DontEnum } attributes
+esid: sec-date.prototype.setmilliseconds
+description: Checking DontEnum attribute
+---*/
+assert(
+  !Date.prototype.propertyIsEnumerable('setMilliseconds'),
+  'The value of !Date.prototype.propertyIsEnumerable(\'setMilliseconds\') is expected to be true'
+);
+
+for (var x in Date.prototype) {
+  assert.notSameValue(x, "setMilliseconds", 'The value of x is not "setMilliseconds"');
+}
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setMilliseconds/S15.9.5.28_A2_T1.js b/js/src/tests/test262/built-ins/Date/prototype/setMilliseconds/S15.9.5.28_A2_T1.js
new file mode 100644
index 0000000000..345a10bbd4
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setMilliseconds/S15.9.5.28_A2_T1.js
@@ -0,0 +1,21 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The "length" property of the "setMilliseconds" is 1
+esid: sec-date.prototype.setmilliseconds
+description: The "length" property of the "setMilliseconds" is 1
+---*/
+assert.sameValue(
+  Date.prototype.setMilliseconds.hasOwnProperty("length"),
+  true,
+  'Date.prototype.setMilliseconds.hasOwnProperty("length") must return true'
+);
+
+assert.sameValue(
+  Date.prototype.setMilliseconds.length,
+  1,
+  'The value of Date.prototype.setMilliseconds.length is expected to be 1'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setMilliseconds/S15.9.5.28_A3_T1.js b/js/src/tests/test262/built-ins/Date/prototype/setMilliseconds/S15.9.5.28_A3_T1.js
new file mode 100644
index 0000000000..f8f2f3478b
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setMilliseconds/S15.9.5.28_A3_T1.js
@@ -0,0 +1,24 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype.setMilliseconds property "length" has { ReadOnly,
+    DontDelete, DontEnum } attributes
+esid: sec-date.prototype.setmilliseconds
+description: Checking ReadOnly attribute
+includes: [propertyHelper.js]
+---*/
+
+var x = Date.prototype.setMilliseconds.length;
+verifyNotWritable(Date.prototype.setMilliseconds, "length", null, 1);
+
+assert.sameValue(
+  Date.prototype.setMilliseconds.length,
+  x,
+  'The value of Date.prototype.setMilliseconds.length is expected to equal the value of x'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setMilliseconds/S15.9.5.28_A3_T2.js b/js/src/tests/test262/built-ins/Date/prototype/setMilliseconds/S15.9.5.28_A3_T2.js
new file mode 100644
index 0000000000..fc4b43d39d
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setMilliseconds/S15.9.5.28_A3_T2.js
@@ -0,0 +1,24 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype.setMilliseconds property "length" has { ReadOnly, !
+    DontDelete, DontEnum } attributes
+esid: sec-date.prototype.setmilliseconds
+description: Checking DontDelete attribute
+---*/
+assert.sameValue(
+  delete Date.prototype.setMilliseconds.length,
+  true,
+  'The value of `delete Date.prototype.setMilliseconds.length` is expected to be true'
+);
+
+assert(
+  !Date.prototype.setMilliseconds.hasOwnProperty('length'),
+  'The value of !Date.prototype.setMilliseconds.hasOwnProperty(\'length\') is expected to be true'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setMilliseconds/S15.9.5.28_A3_T3.js b/js/src/tests/test262/built-ins/Date/prototype/setMilliseconds/S15.9.5.28_A3_T3.js
new file mode 100644
index 0000000000..9e15b794be
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setMilliseconds/S15.9.5.28_A3_T3.js
@@ -0,0 +1,22 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype.setMilliseconds property "length" has { ReadOnly,
+    DontDelete, DontEnum } attributes
+esid: sec-date.prototype.setmilliseconds
+description: Checking DontEnum attribute
+---*/
+assert(
+  !Date.prototype.setMilliseconds.propertyIsEnumerable('length'),
+  'The value of !Date.prototype.setMilliseconds.propertyIsEnumerable(\'length\') is expected to be true'
+);
+
+for (var x in Date.prototype.setMilliseconds) {
+  assert.notSameValue(x, "length", 'The value of x is not "length"');
+}
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setMilliseconds/arg-coercion-order.js b/js/src/tests/test262/built-ins/Date/prototype/setMilliseconds/arg-coercion-order.js
new file mode 100644
index 0000000000..38384ec1b1
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setMilliseconds/arg-coercion-order.js
@@ -0,0 +1,32 @@
+// Copyright (C) 2021 Kevin Gibbons. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.setmilliseconds
+description: Order of coercion of provided argument vs NaN check
+info: |
+  1. Let t be ? thisTimeValue(this value).
+  2. Set ms to ? ToNumber(ms).
+  3. If t is NaN, return NaN.
+  4. Set t to LocalTime(t).
+  5. Let time be MakeTime(HourFromTime(t), MinFromTime(t), SecFromTime(t), ms).
+  6. Let u be TimeClip(UTC(MakeDate(Day(t), time))).
+  7. Set the [[DateValue]] internal slot of this Date object to u.
+  8. Return u.
+---*/
+
+var date = new Date(NaN);
+var callCount = 0;
+var arg = {
+  valueOf: function() {
+    callCount += 1;
+    return 0;
+  }
+};
+
+var returnValue = date.setMilliseconds(arg);
+
+assert.sameValue(callCount, 1, 'ToNumber invoked exactly once');
+assert.sameValue(returnValue, NaN, 'argument is ignored when `this` is an invalid date');
+assert.sameValue(date.getTime(), NaN, 'argument is ignored when `this` is an invalid date');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setMilliseconds/arg-to-number-err.js b/js/src/tests/test262/built-ins/Date/prototype/setMilliseconds/arg-to-number-err.js
new file mode 100644
index 0000000000..0875605156
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setMilliseconds/arg-to-number-err.js
@@ -0,0 +1,25 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.setmilliseconds
+description: Abrupt completion during type coercion of provided argument
+info: |
+  1. Let t be LocalTime(? thisTimeValue(this value)).
+  2. Let dt be ? ToNumber(date).
+---*/
+
+var date = new Date();
+var originalValue = date.getTime();
+var obj = {
+  valueOf: function() {
+    throw new Test262Error();
+  }
+};
+
+assert.throws(Test262Error, function() {
+  date.setMilliseconds(obj);
+});
+
+assert.sameValue(date.getTime(), originalValue);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setMilliseconds/arg-to-number.js b/js/src/tests/test262/built-ins/Date/prototype/setMilliseconds/arg-to-number.js
new file mode 100644
index 0000000000..9e9d0270bb
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setMilliseconds/arg-to-number.js
@@ -0,0 +1,63 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.setmilliseconds
+description: Type coercion of provided argument
+info: |
+  1. Let t be LocalTime(? thisTimeValue(this value)).
+  2. Let dt be ? ToNumber(date).
+  3. Let newDate be MakeDate(MakeDay(YearFromTime(t), MonthFromTime(t), dt),
+     TimeWithinDay(t)).
+  4. Let u be TimeClip(UTC(newDate)).
+  5. Set the [[DateValue]] internal slot of this Date object to u.
+  6. Return u.
+---*/
+
+var date = new Date(2016, 6);
+var callCount = 0;
+var arg = {
+  valueOf: function() {
+    args = arguments;
+    thisValue = this;
+    callCount += 1;
+    return 2;
+  }
+};
+var args, thisValue, returnValue;
+
+returnValue = date.setMilliseconds(arg);
+
+assert.sameValue(callCount, 1, 'invoked exactly once');
+assert.sameValue(args.length, 0, 'invoked without arguments');
+assert.sameValue(thisValue, arg, '"this" value');
+assert.sameValue(
+  returnValue,
+  new Date(2016, 6, 1, 0, 0, 0, 2).getTime(),
+  'application of specified value'
+);
+
+returnValue = date.setMilliseconds(null);
+
+assert.sameValue(returnValue, new Date(2016, 6, 1).getTime(), 'null');
+
+returnValue = date.setMilliseconds(true);
+
+assert.sameValue(
+  returnValue, new Date(2016, 6, 1, 0, 0, 0, 1).getTime(), 'true'
+);
+
+returnValue = date.setMilliseconds(false);
+
+assert.sameValue(returnValue, new Date(2016, 6, 1).getTime(), 'false');
+
+returnValue = date.setMilliseconds('   +00200.000E-0002	');
+
+assert.sameValue(
+  returnValue, new Date(2016, 6, 1, 0, 0, 0, 2).getTime(), 'string'
+);
+
+returnValue = date.setMilliseconds();
+
+assert.sameValue(returnValue, NaN, 'undefined');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setMilliseconds/browser.js b/js/src/tests/test262/built-ins/Date/prototype/setMilliseconds/browser.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setMilliseconds/browser.js
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setMilliseconds/name.js b/js/src/tests/test262/built-ins/Date/prototype/setMilliseconds/name.js
new file mode 100644
index 0000000000..3430c5e216
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setMilliseconds/name.js
@@ -0,0 +1,28 @@
+// Copyright (C) 2015 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.prototype.setmilliseconds
+description: >
+  Date.prototype.setMilliseconds.name is "setMilliseconds".
+info: |
+  Date.prototype.setMilliseconds ( ms )
+
+  17 ECMAScript Standard Built-in Objects:
+    Every built-in Function object, including constructors, that is not
+    identified as an anonymous function has a name property whose value
+    is a String.
+
+    Unless otherwise specified, the name property of a built-in Function
+    object, if it exists, has the attributes { [[Writable]]: false,
+    [[Enumerable]]: false, [[Configurable]]: true }.
+includes: [propertyHelper.js]
+---*/
+
+assert.sameValue(Date.prototype.setMilliseconds.name, "setMilliseconds");
+
+verifyNotEnumerable(Date.prototype.setMilliseconds, "name");
+verifyNotWritable(Date.prototype.setMilliseconds, "name");
+verifyConfigurable(Date.prototype.setMilliseconds, "name");
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setMilliseconds/new-value-time-clip.js b/js/src/tests/test262/built-ins/Date/prototype/setMilliseconds/new-value-time-clip.js
new file mode 100644
index 0000000000..42a59468e1
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setMilliseconds/new-value-time-clip.js
@@ -0,0 +1,30 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.setmilliseconds
+description: Behavior when new value exceeds [[DateValue]] limits
+info: |
+  1. Let t be LocalTime(? thisTimeValue(this value)).
+  2. Let dt be ? ToNumber(date).
+  3. Let newDate be MakeDate(MakeDay(YearFromTime(t), MonthFromTime(t), dt),
+     TimeWithinDay(t)).
+  4. Let u be TimeClip(UTC(newDate)).
+  5. Set the [[DateValue]] internal slot of this Date object to u.
+  6. Return u.
+
+  TimeClip (time)
+
+  1. If time is not finite, return NaN.
+  2. If abs(time) > 8.64 × 1015, return NaN.
+---*/
+
+var date = new Date(8.64e15);
+var returnValue;
+
+assert.notSameValue(date.getTime(), NaN);
+
+returnValue = date.setMilliseconds(1);
+
+assert.sameValue(returnValue, NaN);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setMilliseconds/not-a-constructor.js b/js/src/tests/test262/built-ins/Date/prototype/setMilliseconds/not-a-constructor.js
new file mode 100644
index 0000000000..3282e1a901
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setMilliseconds/not-a-constructor.js
@@ -0,0 +1,35 @@
+// Copyright (C) 2020 Rick Waldron. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-ecmascript-standard-built-in-objects
+description: >
+  Date.prototype.setMilliseconds does not implement [[Construct]], is not new-able
+info: |
+  ECMAScript Function Objects
+
+  Built-in function objects that are not identified as constructors do not
+  implement the [[Construct]] internal method unless otherwise specified in
+  the description of a particular function.
+
+  sec-evaluatenew
+
+  ...
+  7. If IsConstructor(constructor) is false, throw a TypeError exception.
+  ...
+includes: [isConstructor.js]
+features: [Reflect.construct, arrow-function]
+---*/
+
+assert.sameValue(
+  isConstructor(Date.prototype.setMilliseconds),
+  false,
+  'isConstructor(Date.prototype.setMilliseconds) must return false'
+);
+
+assert.throws(TypeError, () => {
+  let date = new Date(Date.now()); new date.setMilliseconds();
+}, '`let date = new Date(Date.now()); new date.setMilliseconds()` throws TypeError');
+
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setMilliseconds/shell.js b/js/src/tests/test262/built-ins/Date/prototype/setMilliseconds/shell.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setMilliseconds/shell.js
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setMilliseconds/this-value-invalid-date.js b/js/src/tests/test262/built-ins/Date/prototype/setMilliseconds/this-value-invalid-date.js
new file mode 100644
index 0000000000..d0d4289699
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setMilliseconds/this-value-invalid-date.js
@@ -0,0 +1,25 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.setmilliseconds
+description: >
+  Behavior when the "this" value is a Date object describing an invald date
+info: |
+  1. Let t be LocalTime(? thisTimeValue(this value)).
+  2. Let dt be ? ToNumber(date).
+  3. Let newDate be MakeDate(MakeDay(YearFromTime(t), MonthFromTime(t), dt),
+     TimeWithinDay(t)).
+  4. Let u be TimeClip(UTC(newDate)).
+  5. Set the [[DateValue]] internal slot of this Date object to u.
+  6. Return u.
+---*/
+
+var date = new Date(NaN);
+var result;
+
+result = date.setMilliseconds(0);
+
+assert.sameValue(result, NaN, 'return value');
+assert.sameValue(date.getTime(), NaN, '[[DateValue]] internal slot');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setMilliseconds/this-value-non-date.js b/js/src/tests/test262/built-ins/Date/prototype/setMilliseconds/this-value-non-date.js
new file mode 100644
index 0000000000..6c6c2de96c
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setMilliseconds/this-value-non-date.js
@@ -0,0 +1,45 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.setmilliseconds
+description: >
+  Behavior when "this" value is an Object without a [[DateValue]] internal slot
+info: |
+  1. Let t be LocalTime(? thisTimeValue(this value)).
+
+  The abstract operation thisTimeValue(value) performs the following steps:
+
+  1. If Type(value) is Object and value has a [[DateValue]] internal slot, then
+     a. Return value.[[DateValue]].
+  2. Throw a TypeError exception.
+---*/
+
+var setMilliseconds = Date.prototype.setMilliseconds;
+var callCount = 0;
+var arg = {
+  valueOf: function() {
+    callCount += 1;
+    return 1;
+  }
+};
+var args = (function() {
+  return arguments;
+}());
+
+assert.sameValue(typeof setMilliseconds, 'function');
+
+assert.throws(TypeError, function() {
+  setMilliseconds.call({}, arg);
+}, 'ordinary object');
+
+assert.throws(TypeError, function() {
+  setMilliseconds.call([], arg);
+}, 'array exotic object');
+
+assert.throws(TypeError, function() {
+  setMilliseconds.call(args, arg);
+}, 'arguments exotic object');
+
+assert.sameValue(callCount, 0, 'validation precedes input coercion');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setMilliseconds/this-value-non-object.js b/js/src/tests/test262/built-ins/Date/prototype/setMilliseconds/this-value-non-object.js
new file mode 100644
index 0000000000..856d4cd3e2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setMilliseconds/this-value-non-object.js
@@ -0,0 +1,55 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.setmilliseconds
+description: Behavior when "this" value is not an Object
+info: |
+  1. Let t be LocalTime(? thisTimeValue(this value)).
+
+  The abstract operation thisTimeValue(value) performs the following steps:
+
+  1. If Type(value) is Object and value has a [[DateValue]] internal slot, then
+     a. Return value.[[DateValue]].
+  2. Throw a TypeError exception.
+features: [Symbol]
+---*/
+
+var setMilliseconds = Date.prototype.setMilliseconds;
+var callCount = 0;
+var arg = {
+  valueOf: function() {
+    callCount += 1;
+    return 1;
+  }
+};
+var symbol = Symbol();
+
+assert.sameValue(typeof setMilliseconds, 'function');
+
+assert.throws(TypeError, function() {
+  setMilliseconds.call(0, arg);
+}, 'number');
+
+assert.throws(TypeError, function() {
+  setMilliseconds.call(true, arg);
+}, 'boolean');
+
+assert.throws(TypeError, function() {
+  setMilliseconds.call(null, arg);
+}, 'null');
+
+assert.throws(TypeError, function() {
+  setMilliseconds.call(undefined, arg);
+}, 'undefined');
+
+assert.throws(TypeError, function() {
+  setMilliseconds.call('', arg);
+}, 'string');
+
+assert.throws(TypeError, function() {
+  setMilliseconds.call(symbol, arg);
+}, 'symbol');
+
+assert.sameValue(callCount, 0, 'validation precedes input coercion');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setMilliseconds/this-value-valid-date.js b/js/src/tests/test262/built-ins/Date/prototype/setMilliseconds/this-value-valid-date.js
new file mode 100644
index 0000000000..4f1365abde
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setMilliseconds/this-value-valid-date.js
@@ -0,0 +1,49 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.setmilliseconds
+description: Return value for valid dates
+info: |
+  1. Let t be LocalTime(? thisTimeValue(this value)).
+  2. Let dt be ? ToNumber(date).
+  3. Let newDate be MakeDate(MakeDay(YearFromTime(t), MonthFromTime(t), dt),
+     TimeWithinDay(t)).
+  4. Let u be TimeClip(UTC(newDate)).
+  5. Set the [[DateValue]] internal slot of this Date object to u.
+  6. Return u.
+---*/
+
+var date = new Date(2016, 6);
+var returnValue, expected;
+
+returnValue = date.setMilliseconds(333);
+
+expected = new Date(2016, 6, 1, 0, 0, 0, 333).getTime();
+assert.sameValue(
+  returnValue, expected, 'within unit boundary (return value)'
+);
+assert.sameValue(
+  date.getTime(), expected, 'within unit boundary ([[DateValue]] slot)'
+);
+
+returnValue = date.setMilliseconds(-1);
+
+expected = new Date(2016, 5, 30, 23, 59, 59, 999).getTime();
+assert.sameValue(
+  returnValue, expected, 'before time unit boundary (return value)'
+);
+assert.sameValue(
+  date.getTime(), expected, 'before time unit boundary ([[DateValue]] slot)'
+);
+
+returnValue = date.setMilliseconds(1000);
+
+expected = new Date(2016, 6, 1).getTime();
+assert.sameValue(
+  returnValue, expected, 'after time unit boundary (return value)'
+);
+assert.sameValue(
+  date.getTime(), expected, 'after time unit boundary ([[DateValue]] slot)'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setMinutes/S15.9.5.32_A1_T1.js b/js/src/tests/test262/built-ins/Date/prototype/setMinutes/S15.9.5.32_A1_T1.js
new file mode 100644
index 0000000000..495135965b
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setMinutes/S15.9.5.32_A1_T1.js
@@ -0,0 +1,25 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype property "setMinutes" has { DontEnum } attributes
+esid: sec-date.prototype.setminutes
+description: Checking absence of ReadOnly attribute
+---*/
+
+var x = Date.prototype.setMinutes;
+if (x === 1) {
+  Date.prototype.setMinutes = 2;
+} else {
+  Date.prototype.setMinutes = 1;
+}
+
+assert.notSameValue(
+  Date.prototype.setMinutes,
+  x,
+  'The value of Date.prototype.setMinutes is expected to not equal the value of `x`'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setMinutes/S15.9.5.32_A1_T2.js b/js/src/tests/test262/built-ins/Date/prototype/setMinutes/S15.9.5.32_A1_T2.js
new file mode 100644
index 0000000000..3cc72be727
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setMinutes/S15.9.5.32_A1_T2.js
@@ -0,0 +1,22 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype property "setMinutes" has { DontEnum } attributes
+esid: sec-date.prototype.setminutes
+description: Checking absence of DontDelete attribute
+---*/
+assert.notSameValue(
+  delete Date.prototype.setMinutes,
+  false,
+  'The value of delete Date.prototype.setMinutes is not false'
+);
+
+assert(
+  !Date.prototype.hasOwnProperty('setMinutes'),
+  'The value of !Date.prototype.hasOwnProperty(\'setMinutes\') is expected to be true'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setMinutes/S15.9.5.32_A1_T3.js b/js/src/tests/test262/built-ins/Date/prototype/setMinutes/S15.9.5.32_A1_T3.js
new file mode 100644
index 0000000000..61eba85e1a
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setMinutes/S15.9.5.32_A1_T3.js
@@ -0,0 +1,20 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype property "setMinutes" has { DontEnum } attributes
+esid: sec-date.prototype.setminutes
+description: Checking DontEnum attribute
+---*/
+assert(
+  !Date.prototype.propertyIsEnumerable('setMinutes'),
+  'The value of !Date.prototype.propertyIsEnumerable(\'setMinutes\') is expected to be true'
+);
+
+for (var x in Date.prototype) {
+  assert.notSameValue(x, "setMinutes", 'The value of x is not "setMinutes"');
+}
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setMinutes/S15.9.5.32_A2_T1.js b/js/src/tests/test262/built-ins/Date/prototype/setMinutes/S15.9.5.32_A2_T1.js
new file mode 100644
index 0000000000..e95e992ab1
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setMinutes/S15.9.5.32_A2_T1.js
@@ -0,0 +1,21 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The "length" property of the "setMinutes" is 3
+esid: sec-date.prototype.setminutes
+description: The "length" property of the "setMinutes" is 3
+---*/
+assert.sameValue(
+  Date.prototype.setMinutes.hasOwnProperty("length"),
+  true,
+  'Date.prototype.setMinutes.hasOwnProperty("length") must return true'
+);
+
+assert.sameValue(
+  Date.prototype.setMinutes.length,
+  3,
+  'The value of Date.prototype.setMinutes.length is expected to be 3'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setMinutes/S15.9.5.32_A3_T1.js b/js/src/tests/test262/built-ins/Date/prototype/setMinutes/S15.9.5.32_A3_T1.js
new file mode 100644
index 0000000000..2224b138ad
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setMinutes/S15.9.5.32_A3_T1.js
@@ -0,0 +1,24 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype.setMinutes property "length" has { ReadOnly,
+    DontDelete, DontEnum } attributes
+esid: sec-date.prototype.setminutes
+description: Checking ReadOnly attribute
+includes: [propertyHelper.js]
+---*/
+
+var x = Date.prototype.setMinutes.length;
+verifyNotWritable(Date.prototype.setMinutes, "length", null, 1);
+
+assert.sameValue(
+  Date.prototype.setMinutes.length,
+  x,
+  'The value of Date.prototype.setMinutes.length is expected to equal the value of x'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setMinutes/S15.9.5.32_A3_T2.js b/js/src/tests/test262/built-ins/Date/prototype/setMinutes/S15.9.5.32_A3_T2.js
new file mode 100644
index 0000000000..d9a4a75086
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setMinutes/S15.9.5.32_A3_T2.js
@@ -0,0 +1,24 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype.setMinutes property "length" has { ReadOnly, !
+    DontDelete, DontEnum } attributes
+esid: sec-date.prototype.setminutes
+description: Checking DontDelete attribute
+---*/
+assert.sameValue(
+  delete Date.prototype.setMinutes.length,
+  true,
+  'The value of `delete Date.prototype.setMinutes.length` is expected to be true'
+);
+
+assert(
+  !Date.prototype.setMinutes.hasOwnProperty('length'),
+  'The value of !Date.prototype.setMinutes.hasOwnProperty(\'length\') is expected to be true'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setMinutes/S15.9.5.32_A3_T3.js b/js/src/tests/test262/built-ins/Date/prototype/setMinutes/S15.9.5.32_A3_T3.js
new file mode 100644
index 0000000000..1380f4e35b
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setMinutes/S15.9.5.32_A3_T3.js
@@ -0,0 +1,22 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype.setMinutes property "length" has { ReadOnly,
+    DontDelete, DontEnum } attributes
+esid: sec-date.prototype.setminutes
+description: Checking DontEnum attribute
+---*/
+assert(
+  !Date.prototype.setMinutes.propertyIsEnumerable('length'),
+  'The value of !Date.prototype.setMinutes.propertyIsEnumerable(\'length\') is expected to be true'
+);
+
+for (var x in Date.prototype.setMinutes) {
+  assert.notSameValue(x, "length", 'The value of x is not "length"');
+}
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setMinutes/arg-coercion-order.js b/js/src/tests/test262/built-ins/Date/prototype/setMinutes/arg-coercion-order.js
new file mode 100644
index 0000000000..50d81c114f
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setMinutes/arg-coercion-order.js
@@ -0,0 +1,51 @@
+// Copyright (C) 2021 Kevin Gibbons. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.setminutes
+description: Order of coercion of provided argument vs NaN check
+info: |
+  1. Let t be ? thisTimeValue(this value).
+  2. Let m be ? ToNumber(min).
+  3. If sec is present, let s be ? ToNumber(sec).
+  4. If ms is present, let milli be ? ToNumber(ms).
+  5. If t is NaN, return NaN.
+  6. Set t to LocalTime(t).
+  7. If sec is not present, let s be SecFromTime(t).
+  8. If ms is not present, let milli be msFromTime(t).
+  9. Let date be MakeDate(Day(t), MakeTime(HourFromTime(t), m, s, milli)).
+  10. Let u be TimeClip(UTC(date)).
+  11. Set the [[DateValue]] internal slot of this Date object to u.
+  12. Return u.
+includes: [compareArray.js]
+---*/
+
+var date = new Date(NaN);
+var effects = [];
+var argMin = {
+  valueOf: function() {
+    effects.push('valueOf min');
+    return 0;
+  }
+};
+var argSec = {
+  valueOf: function() {
+    effects.push('valueOf sec');
+    return 0;
+  }
+};
+var argMs = {
+  valueOf: function() {
+    effects.push('valueOf ms');
+    return 0;
+  }
+};
+
+var returnValue = date.setMinutes(argMin, argSec, argMs);
+
+var expectedEffects = ['valueOf min', 'valueOf sec', 'valueOf ms'];
+
+assert.compareArray(effects, expectedEffects);
+assert.sameValue(returnValue, NaN, 'argument is ignored when `this` is an invalid date');
+assert.sameValue(date.getTime(), NaN, 'argument is ignored when `this` is an invalid date');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setMinutes/arg-min-to-number-err.js b/js/src/tests/test262/built-ins/Date/prototype/setMinutes/arg-min-to-number-err.js
new file mode 100644
index 0000000000..dbcee5ffbb
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setMinutes/arg-min-to-number-err.js
@@ -0,0 +1,32 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.setminutes
+description: Abrupt completion during type coercion of provided "min"
+info: |
+  1. Let t be LocalTime(? thisTimeValue(this value)).
+  2. Let m be ? ToNumber(min).
+---*/
+
+var date = new Date();
+var callCount = 0;
+var originalValue = date.getTime();
+var obj = {
+  valueOf: function() {
+    throw new Test262Error();
+  }
+};
+var counter = {
+  valueOf: function() {
+    callCount += 1;
+  }
+};
+
+assert.throws(Test262Error, function() {
+  date.setMinutes(obj, counter, counter);
+});
+
+assert.sameValue(date.getTime(), originalValue);
+assert.sameValue(callCount, 0);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setMinutes/arg-min-to-number.js b/js/src/tests/test262/built-ins/Date/prototype/setMinutes/arg-min-to-number.js
new file mode 100644
index 0000000000..18a9bb5809
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setMinutes/arg-min-to-number.js
@@ -0,0 +1,62 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.setminutes
+description: Type coercion of provided "min"
+info: |
+  1. Let t be LocalTime(? thisTimeValue(this value)).
+  2. Let m be ? ToNumber(min).
+  3. If sec is not specified, let s be SecFromTime(t); otherwise, let s be ?
+     ToNumber(sec).
+  4. If ms is not specified, let milli be msFromTime(t); otherwise, let milli
+     be ? ToNumber(ms).
+  5. Let date be MakeDate(Day(t), MakeTime(HourFromTime(t), m, s, milli)).
+  6. Let u be TimeClip(UTC(date)).
+  7. Set the [[DateValue]] internal slot of this Date object to u.
+  8. Return u.
+---*/
+
+var date = new Date(2016, 6);
+var callCount = 0;
+var arg = {
+  valueOf: function() {
+    args = arguments;
+    thisValue = this;
+    callCount += 1;
+    return 2;
+  }
+};
+var args, thisValue, returnValue;
+
+returnValue = date.setMinutes(arg);
+
+assert.sameValue(callCount, 1, 'invoked exactly once');
+assert.sameValue(args.length, 0, 'invoked without arguments');
+assert.sameValue(thisValue, arg, '"this" value');
+assert.sameValue(
+  returnValue,
+  new Date(2016, 6, 1, 0, 2).getTime(),
+  'application of specified value'
+);
+
+returnValue = date.setMinutes(null);
+
+assert.sameValue(returnValue, new Date(2016, 6, 1).getTime(), 'null');
+
+returnValue = date.setMinutes(true);
+
+assert.sameValue(returnValue, new Date(2016, 6, 1, 0, 1).getTime(), 'true');
+
+returnValue = date.setMinutes(false);
+
+assert.sameValue(returnValue, new Date(2016, 6, 1).getTime(), 'false');
+
+returnValue = date.setMinutes('   +00200.000E-0002	');
+
+assert.sameValue(returnValue, new Date(2016, 6, 1, 0, 2).getTime(), 'string');
+
+returnValue = date.setMinutes();
+
+assert.sameValue(returnValue, NaN, 'undefined');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setMinutes/arg-ms-to-number-err.js b/js/src/tests/test262/built-ins/Date/prototype/setMinutes/arg-ms-to-number-err.js
new file mode 100644
index 0000000000..f2036235e6
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setMinutes/arg-ms-to-number-err.js
@@ -0,0 +1,29 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.setminutes
+description: Abrupt completion during type coercion of provided "ms"
+info: |
+  1. Let t be LocalTime(? thisTimeValue(this value)).
+  2. Let m be ? ToNumber(min).
+  3. If sec is not specified, let s be SecFromTime(t); otherwise, let s be ?
+     ToNumber(sec).
+  4. If ms is not specified, let milli be msFromTime(t); otherwise, let milli
+     be ? ToNumber(ms).
+---*/
+
+var date = new Date();
+var originalValue = date.getTime();
+var obj = {
+  valueOf: function() {
+    throw new Test262Error();
+  }
+};
+
+assert.throws(Test262Error, function() {
+  date.setMinutes(0, 0, obj);
+});
+
+assert.sameValue(date.getTime(), originalValue);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setMinutes/arg-ms-to-number.js b/js/src/tests/test262/built-ins/Date/prototype/setMinutes/arg-ms-to-number.js
new file mode 100644
index 0000000000..84d4629baf
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setMinutes/arg-ms-to-number.js
@@ -0,0 +1,66 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.setminutes
+description: Type coercion of provided "ms"
+info: |
+  1. Let t be LocalTime(? thisTimeValue(this value)).
+  2. Let m be ? ToNumber(min).
+  3. If sec is not specified, let s be SecFromTime(t); otherwise, let s be ?
+     ToNumber(sec).
+  4. If ms is not specified, let milli be msFromTime(t); otherwise, let milli
+     be ? ToNumber(ms).
+  5. Let date be MakeDate(Day(t), MakeTime(HourFromTime(t), m, s, milli)).
+  6. Let u be TimeClip(UTC(date)).
+  7. Set the [[DateValue]] internal slot of this Date object to u.
+  8. Return u.
+---*/
+
+var date = new Date(2016, 6);
+var callCount = 0;
+var arg = {
+  valueOf: function() {
+    args = arguments;
+    thisValue = this;
+    callCount += 1;
+    return 2;
+  }
+};
+var args, thisValue, returnValue;
+
+returnValue = date.setMinutes(0, 0, arg);
+
+assert.sameValue(callCount, 1, 'invoked exactly once');
+assert.sameValue(args.length, 0, 'invoked without arguments');
+assert.sameValue(thisValue, arg, '"this" value');
+assert.sameValue(
+  returnValue,
+  new Date(2016, 6, 1, 0, 0, 0, 2).getTime(),
+  'application of specified value'
+);
+
+returnValue = date.setMinutes(0, 0, null);
+
+assert.sameValue(returnValue, new Date(2016, 6, 1).getTime(), 'null');
+
+returnValue = date.setMinutes(0, 0, true);
+
+assert.sameValue(
+  returnValue, new Date(2016, 6, 1, 0, 0, 0, 1).getTime(), 'true'
+);
+
+returnValue = date.setMinutes(0, 0, false);
+
+assert.sameValue(returnValue, new Date(2016, 6, 1).getTime(), 'false');
+
+returnValue = date.setMinutes(0, 0, '   +00200.000E-0002	');
+
+assert.sameValue(
+  returnValue, new Date(2016, 6, 1, 0, 0, 0, 2).getTime(), 'string'
+);
+
+returnValue = date.setMinutes(0, 0, undefined);
+
+assert.sameValue(returnValue, NaN, 'undefined');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setMinutes/arg-sec-to-number-err.js b/js/src/tests/test262/built-ins/Date/prototype/setMinutes/arg-sec-to-number-err.js
new file mode 100644
index 0000000000..d57bba3b71
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setMinutes/arg-sec-to-number-err.js
@@ -0,0 +1,34 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.setminutes
+description: Abrupt completion during type coercion of provided "sec"
+info: |
+  1. Let t be LocalTime(? thisTimeValue(this value)).
+  2. Let m be ? ToNumber(min).
+  3. If sec is not specified, let s be SecFromTime(t); otherwise, let s be ?
+     ToNumber(sec).
+---*/
+
+var date = new Date();
+var callCount = 0;
+var originalValue = date.getTime();
+var obj = {
+  valueOf: function() {
+    throw new Test262Error();
+  }
+};
+var counter = {
+  valueOf: function() {
+    callCount += 1;
+  }
+};
+
+assert.throws(Test262Error, function() {
+  date.setMinutes(0, 0, obj, counter);
+});
+
+assert.sameValue(date.getTime(), originalValue);
+assert.sameValue(callCount, 0);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setMinutes/arg-sec-to-number.js b/js/src/tests/test262/built-ins/Date/prototype/setMinutes/arg-sec-to-number.js
new file mode 100644
index 0000000000..dbb11d823a
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setMinutes/arg-sec-to-number.js
@@ -0,0 +1,64 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.setminutes
+description: Type coercion of provided "sec"
+info: |
+  1. Let t be LocalTime(? thisTimeValue(this value)).
+  2. Let m be ? ToNumber(min).
+  3. If sec is not specified, let s be SecFromTime(t); otherwise, let s be ?
+     ToNumber(sec).
+  4. If ms is not specified, let milli be msFromTime(t); otherwise, let milli
+     be ? ToNumber(ms).
+  5. Let date be MakeDate(Day(t), MakeTime(HourFromTime(t), m, s, milli)).
+  6. Let u be TimeClip(UTC(date)).
+  7. Set the [[DateValue]] internal slot of this Date object to u.
+  8. Return u.
+---*/
+
+var date = new Date(2016, 6);
+var callCount = 0;
+var arg = {
+  valueOf: function() {
+    args = arguments;
+    thisValue = this;
+    callCount += 1;
+    return 2;
+  }
+};
+var args, thisValue, returnValue;
+
+returnValue = date.setMinutes(0, arg);
+
+assert.sameValue(callCount, 1, 'invoked exactly once');
+assert.sameValue(args.length, 0, 'invoked without arguments');
+assert.sameValue(thisValue, arg, '"this" value');
+assert.sameValue(
+  returnValue,
+  new Date(2016, 6, 1, 0, 0, 2).getTime(),
+  'application of specified value'
+);
+
+returnValue = date.setMinutes(0, null);
+
+assert.sameValue(returnValue, new Date(2016, 6, 1).getTime(), 'null');
+
+returnValue = date.setMinutes(0, true);
+
+assert.sameValue(returnValue, new Date(2016, 6, 1, 0, 0, 1).getTime(), 'true');
+
+returnValue = date.setMinutes(0, false);
+
+assert.sameValue(returnValue, new Date(2016, 6, 1).getTime(), 'false');
+
+returnValue = date.setMinutes(0, '   +00200.000E-0002	');
+
+assert.sameValue(
+  returnValue, new Date(2016, 6, 1, 0, 0, 2).getTime(), 'string'
+);
+
+returnValue = date.setMinutes(0, undefined);
+
+assert.sameValue(returnValue, NaN, 'undefined');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setMinutes/browser.js b/js/src/tests/test262/built-ins/Date/prototype/setMinutes/browser.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setMinutes/browser.js
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setMinutes/name.js b/js/src/tests/test262/built-ins/Date/prototype/setMinutes/name.js
new file mode 100644
index 0000000000..5b177e2027
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setMinutes/name.js
@@ -0,0 +1,28 @@
+// Copyright (C) 2015 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.prototype.setminutes
+description: >
+  Date.prototype.setMinutes.name is "setMinutes".
+info: |
+  Date.prototype.setMinutes ( min [ , sec [ , ms ] ] )
+
+  17 ECMAScript Standard Built-in Objects:
+    Every built-in Function object, including constructors, that is not
+    identified as an anonymous function has a name property whose value
+    is a String.
+
+    Unless otherwise specified, the name property of a built-in Function
+    object, if it exists, has the attributes { [[Writable]]: false,
+    [[Enumerable]]: false, [[Configurable]]: true }.
+includes: [propertyHelper.js]
+---*/
+
+assert.sameValue(Date.prototype.setMinutes.name, "setMinutes");
+
+verifyNotEnumerable(Date.prototype.setMinutes, "name");
+verifyNotWritable(Date.prototype.setMinutes, "name");
+verifyConfigurable(Date.prototype.setMinutes, "name");
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setMinutes/new-value-time-clip.js b/js/src/tests/test262/built-ins/Date/prototype/setMinutes/new-value-time-clip.js
new file mode 100644
index 0000000000..030a2b1998
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setMinutes/new-value-time-clip.js
@@ -0,0 +1,46 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.setminutes
+description: Behavior when new value exceeds [[DateValue]] limits
+info: |
+  1. Let t be LocalTime(? thisTimeValue(this value)).
+  2. Let m be ? ToNumber(min).
+  3. If sec is not specified, let s be SecFromTime(t); otherwise, let s be ?
+     ToNumber(sec).
+  4. If ms is not specified, let milli be msFromTime(t); otherwise, let milli
+     be ? ToNumber(ms).
+  5. Let date be MakeDate(Day(t), MakeTime(HourFromTime(t), m, s, milli)).
+  6. Let u be TimeClip(UTC(date)).
+  7. Set the [[DateValue]] internal slot of this Date object to u.
+  8. Return u.
+
+  TimeClip (time)
+
+  1. If time is not finite, return NaN.
+  2. If abs(time) > 8.64 × 1015, return NaN.
+---*/
+
+var maxMs = 8.64e15;
+var date = new Date(maxMs);
+var returnValue;
+
+assert.notSameValue(date.getTime(), NaN);
+
+returnValue = date.setMinutes(24 * 60);
+
+assert.sameValue(returnValue, NaN, 'overflow due to minutes');
+
+date = new Date(maxMs);
+
+returnValue = date.setMinutes(0, 24 * 60 * 60);
+
+assert.sameValue(returnValue, NaN, 'overflow due to seconds');
+
+date = new Date(maxMs);
+
+returnValue = date.setMinutes(0, 0, 24 * 60 * 60 * 1000);
+
+assert.sameValue(returnValue, NaN, 'overflow due to milliseconds');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setMinutes/not-a-constructor.js b/js/src/tests/test262/built-ins/Date/prototype/setMinutes/not-a-constructor.js
new file mode 100644
index 0000000000..c65d687fb9
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setMinutes/not-a-constructor.js
@@ -0,0 +1,35 @@
+// Copyright (C) 2020 Rick Waldron. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-ecmascript-standard-built-in-objects
+description: >
+  Date.prototype.setMinutes does not implement [[Construct]], is not new-able
+info: |
+  ECMAScript Function Objects
+
+  Built-in function objects that are not identified as constructors do not
+  implement the [[Construct]] internal method unless otherwise specified in
+  the description of a particular function.
+
+  sec-evaluatenew
+
+  ...
+  7. If IsConstructor(constructor) is false, throw a TypeError exception.
+  ...
+includes: [isConstructor.js]
+features: [Reflect.construct, arrow-function]
+---*/
+
+assert.sameValue(
+  isConstructor(Date.prototype.setMinutes),
+  false,
+  'isConstructor(Date.prototype.setMinutes) must return false'
+);
+
+assert.throws(TypeError, () => {
+  let date = new Date(Date.now()); new date.setMinutes();
+}, '`let date = new Date(Date.now()); new date.setMinutes()` throws TypeError');
+
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setMinutes/shell.js b/js/src/tests/test262/built-ins/Date/prototype/setMinutes/shell.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setMinutes/shell.js
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setMinutes/this-value-invalid-date.js b/js/src/tests/test262/built-ins/Date/prototype/setMinutes/this-value-invalid-date.js
new file mode 100644
index 0000000000..625e53d8f9
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setMinutes/this-value-invalid-date.js
@@ -0,0 +1,45 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.setminutes
+description: >
+  Behavior when the "this" value is a Date object describing an invald date
+info: |
+  1. Let t be LocalTime(? thisTimeValue(this value)).
+  2. Let h be ? ToNumber(hour).
+  3. If min is not specified, let m be MinFromTime(t); otherwise, let m be ?
+     ToNumber(min).
+  4. If sec is not specified, let s be SecFromTime(t); otherwise, let s be ?
+     ToNumber(sec).
+  5. If ms is not specified, let milli be msFromTime(t); otherwise, let milli
+     be ? ToNumber(ms).
+  6. Let date be MakeDate(Day(t), MakeTime(h, m, s, milli)).
+  7. Let u be TimeClip(UTC(date)).
+  8. Set the [[DateValue]] internal slot of this Date object to u.
+  9. Return u.
+---*/
+
+var date = new Date(NaN);
+var result;
+
+result = date.setMinutes(0);
+
+assert.sameValue(result, NaN, 'return value (hour)');
+assert.sameValue(date.getTime(), NaN, '[[DateValue]] internal slot (hour)');
+
+result = date.setMinutes(0, 0);
+
+assert.sameValue(result, NaN, 'return value (minute)');
+assert.sameValue(date.getTime(), NaN, '[[DateValue]] internal slot (minute)');
+
+result = date.setMinutes(0, 0, 0);
+
+assert.sameValue(result, NaN, 'return value (second)');
+assert.sameValue(date.getTime(), NaN, '[[DateValue]] internal slot (second)');
+
+result = date.setMinutes(0, 0, 0, 0);
+
+assert.sameValue(result, NaN, 'return value (ms)');
+assert.sameValue(date.getTime(), NaN, '[[DateValue]] internal slot (ms)');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setMinutes/this-value-non-date.js b/js/src/tests/test262/built-ins/Date/prototype/setMinutes/this-value-non-date.js
new file mode 100644
index 0000000000..e6b5eff326
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setMinutes/this-value-non-date.js
@@ -0,0 +1,45 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.setminutes
+description: >
+  Behavior when "this" value is an Object without a [[DateValue]] internal slot
+info: |
+  1. Let t be LocalTime(? thisTimeValue(this value)).
+
+  The abstract operation thisTimeValue(value) performs the following steps:
+
+  1. If Type(value) is Object and value has a [[DateValue]] internal slot, then
+     a. Return value.[[DateValue]].
+  2. Throw a TypeError exception.
+---*/
+
+var setMinutes = Date.prototype.setMinutes;
+var callCount = 0;
+var arg = {
+  valueOf: function() {
+    callCount += 1;
+    return 1;
+  }
+};
+var args = (function() {
+  return arguments;
+}());
+
+assert.sameValue(typeof setMinutes, 'function');
+
+assert.throws(TypeError, function() {
+  setMinutes.call({}, arg);
+}, 'ordinary object');
+
+assert.throws(TypeError, function() {
+  setMinutes.call([], arg);
+}, 'array exotic object');
+
+assert.throws(TypeError, function() {
+  setMinutes.call(args, arg);
+}, 'arguments exotic object');
+
+assert.sameValue(callCount, 0, 'validation precedes input coercion');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setMinutes/this-value-non-object.js b/js/src/tests/test262/built-ins/Date/prototype/setMinutes/this-value-non-object.js
new file mode 100644
index 0000000000..4a2e9da81a
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setMinutes/this-value-non-object.js
@@ -0,0 +1,55 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.setminutes
+description: Behavior when "this" value is not an Object
+info: |
+  1. Let t be LocalTime(? thisTimeValue(this value)).
+
+  The abstract operation thisTimeValue(value) performs the following steps:
+
+  1. If Type(value) is Object and value has a [[DateValue]] internal slot, then
+     a. Return value.[[DateValue]].
+  2. Throw a TypeError exception.
+features: [Symbol]
+---*/
+
+var setMinutes = Date.prototype.setMinutes;
+var callCount = 0;
+var arg = {
+  valueOf: function() {
+    callCount += 1;
+    return 1;
+  }
+};
+var symbol = Symbol();
+
+assert.sameValue(typeof setMinutes, 'function');
+
+assert.throws(TypeError, function() {
+  setMinutes.call(0, arg);
+}, 'number');
+
+assert.throws(TypeError, function() {
+  setMinutes.call(true, arg);
+}, 'boolean');
+
+assert.throws(TypeError, function() {
+  setMinutes.call(null, arg);
+}, 'null');
+
+assert.throws(TypeError, function() {
+  setMinutes.call(undefined, arg);
+}, 'undefined');
+
+assert.throws(TypeError, function() {
+  setMinutes.call('', arg);
+}, 'string');
+
+assert.throws(TypeError, function() {
+  setMinutes.call(symbol, arg);
+}, 'symbol');
+
+assert.sameValue(callCount, 0, 'validation precedes input coercion');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setMinutes/this-value-valid-date.js b/js/src/tests/test262/built-ins/Date/prototype/setMinutes/this-value-valid-date.js
new file mode 100644
index 0000000000..76b4f732d2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setMinutes/this-value-valid-date.js
@@ -0,0 +1,131 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.setminutes
+description: Return value for valid dates
+info: |
+  1. Let t be ? thisTimeValue(this value).
+  2. If t is NaN, let t be +0; otherwise, let t be LocalTime(t).
+  3. Let y be ? ToNumber(year).
+  4. If month is not specified, let m be MonthFromTime(t); otherwise, let m be
+     ? ToNumber(month).
+  5. If date is not specified, let dt be DateFromTime(t); otherwise, let dt be
+     ? ToNumber(date).
+  6. Let newDate be MakeDate(MakeDay(y, m, dt), TimeWithinDay(t)).
+  7. Let u be TimeClip(UTC(newDate)).
+  8. Set the [[DateValue]] internal slot of this Date object to u.
+  9. Return u.
+---*/
+
+var date = new Date(2016, 6, 1);
+var returnValue, expected;
+
+returnValue = date.setMinutes(23);
+
+expected = new Date(2016, 6, 1, 0, 23).getTime();
+assert.sameValue(
+  returnValue, expected, 'minute within unit boundary (return value)'
+);
+assert.sameValue(
+  date.getTime(), expected, 'minute within unit boundary ([[DateValue]] slot)'
+);
+
+returnValue = date.setMinutes(-1);
+
+expected = new Date(2016, 5, 30, 23, 59).getTime();
+assert.sameValue(
+  returnValue, expected, 'minute before time unit boundary (return value)'
+);
+assert.sameValue(
+  date.getTime(),
+  expected,
+  'minute before time unit boundary ([[DateValue]] slot)'
+);
+
+returnValue = date.setMinutes(60);
+
+expected = new Date(2016, 6, 1).getTime();
+assert.sameValue(
+  returnValue, expected, 'minute after time unit boundary (return value)'
+);
+assert.sameValue(
+  date.getTime(),
+  expected,
+  'minute after time unit boundary ([[DateValue]] slot)'
+);
+
+date = new Date(2016, 6, 1);
+
+returnValue = date.setMinutes(0, 45);
+
+expected = new Date(2016, 6, 1, 0, 0, 45).getTime();
+assert.sameValue(
+  returnValue, expected, 'second within unit boundary (return value)'
+);
+assert.sameValue(
+  date.getTime(), expected, 'second within unit boundary ([[DateValue]] slot)'
+);
+
+returnValue = date.setMinutes(0, -1);
+
+expected = new Date(2016, 5, 30, 23, 59, 59).getTime();
+assert.sameValue(
+  returnValue, expected, 'second before time unit boundary (return value)'
+);
+assert.sameValue(
+  date.getTime(),
+  expected,
+  'second before time unit boundary ([[DateValue]] slot)'
+);
+
+returnValue = date.setMinutes(0, 60);
+
+expected = new Date(2016, 5, 30, 23, 1).getTime();
+assert.sameValue(
+  returnValue, expected, 'second after time unit boundary (return value)'
+);
+assert.sameValue(
+  date.getTime(),
+  expected,
+  'second after time unit boundary ([[DateValue]] slot)'
+);
+
+date = new Date(2016, 6, 1);
+
+returnValue = date.setMinutes(0, 0, 345);
+
+expected = new Date(2016, 6, 1, 0, 0, 0, 345).getTime();
+assert.sameValue(
+  returnValue, expected, 'millisecond within unit boundary (return value)'
+);
+assert.sameValue(
+  date.getTime(),
+  expected,
+  'millisecond within unit boundary ([[DateValue]] slot)'
+);
+
+returnValue = date.setMinutes(0, 0, -1);
+
+expected = new Date(2016, 5, 30, 23, 59, 59, 999).getTime();
+assert.sameValue(
+  returnValue, expected, 'millisecond before time unit boundary (return value)'
+);
+assert.sameValue(
+  date.getTime(),
+  expected,
+  'millisecond before time unit boundary ([[DateValue]] slot)'
+);
+
+returnValue = date.setMinutes(0, 0, 1000);
+
+expected = new Date(2016, 5, 30, 23, 0, 1).getTime();
+assert.sameValue(
+  returnValue, expected, 'millisecond after time unit boundary (return value)'
+);
+assert.sameValue(
+  date.getTime(),
+  expected,
+  'millisecond after time unit boundary ([[DateValue]] slot)'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setMonth/S15.9.5.38_A1_T1.js b/js/src/tests/test262/built-ins/Date/prototype/setMonth/S15.9.5.38_A1_T1.js
new file mode 100644
index 0000000000..ac3d594ccb
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setMonth/S15.9.5.38_A1_T1.js
@@ -0,0 +1,25 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype property "setMonth" has { DontEnum } attributes
+esid: sec-date.prototype.setmonth
+description: Checking absence of ReadOnly attribute
+---*/
+
+var x = Date.prototype.setMonth;
+if (x === 1) {
+  Date.prototype.setMonth = 2;
+} else {
+  Date.prototype.setMonth = 1;
+}
+
+assert.notSameValue(
+  Date.prototype.setMonth,
+  x,
+  'The value of Date.prototype.setMonth is expected to not equal the value of `x`'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setMonth/S15.9.5.38_A1_T2.js b/js/src/tests/test262/built-ins/Date/prototype/setMonth/S15.9.5.38_A1_T2.js
new file mode 100644
index 0000000000..492b1be5cd
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setMonth/S15.9.5.38_A1_T2.js
@@ -0,0 +1,18 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype property "setMonth" has { DontEnum } attributes
+esid: sec-date.prototype.setmonth
+description: Checking absence of DontDelete attribute
+---*/
+assert.notSameValue(delete Date.prototype.setMonth, false, 'The value of delete Date.prototype.setMonth is not false');
+
+assert(
+  !Date.prototype.hasOwnProperty('setMonth'),
+  'The value of !Date.prototype.hasOwnProperty(\'setMonth\') is expected to be true'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setMonth/S15.9.5.38_A1_T3.js b/js/src/tests/test262/built-ins/Date/prototype/setMonth/S15.9.5.38_A1_T3.js
new file mode 100644
index 0000000000..22d2585a7c
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setMonth/S15.9.5.38_A1_T3.js
@@ -0,0 +1,20 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype property "setMonth" has { DontEnum } attributes
+esid: sec-date.prototype.setmonth
+description: Checking DontEnum attribute
+---*/
+assert(
+  !Date.prototype.propertyIsEnumerable('setMonth'),
+  'The value of !Date.prototype.propertyIsEnumerable(\'setMonth\') is expected to be true'
+);
+
+for (var x in Date.prototype) {
+  assert.notSameValue(x, "setMonth", 'The value of x is not "setMonth"');
+}
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setMonth/S15.9.5.38_A2_T1.js b/js/src/tests/test262/built-ins/Date/prototype/setMonth/S15.9.5.38_A2_T1.js
new file mode 100644
index 0000000000..ed5846befa
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setMonth/S15.9.5.38_A2_T1.js
@@ -0,0 +1,17 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The "length" property of the "setMonth" is 2
+esid: sec-date.prototype.setmonth
+description: The "length" property of the "setMonth" is 2
+---*/
+assert.sameValue(
+  Date.prototype.setMonth.hasOwnProperty("length"),
+  true,
+  'Date.prototype.setMonth.hasOwnProperty("length") must return true'
+);
+
+assert.sameValue(Date.prototype.setMonth.length, 2, 'The value of Date.prototype.setMonth.length is expected to be 2');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setMonth/S15.9.5.38_A3_T1.js b/js/src/tests/test262/built-ins/Date/prototype/setMonth/S15.9.5.38_A3_T1.js
new file mode 100644
index 0000000000..f6c45f61ef
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setMonth/S15.9.5.38_A3_T1.js
@@ -0,0 +1,24 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype.setMonth property "length" has { ReadOnly, DontDelete,
+    DontEnum } attributes
+esid: sec-date.prototype.setmonth
+description: Checking ReadOnly attribute
+includes: [propertyHelper.js]
+---*/
+
+var x = Date.prototype.setMonth.length;
+verifyNotWritable(Date.prototype.setMonth, "length", null, 1);
+
+assert.sameValue(
+  Date.prototype.setMonth.length,
+  x,
+  'The value of Date.prototype.setMonth.length is expected to equal the value of x'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setMonth/S15.9.5.38_A3_T2.js b/js/src/tests/test262/built-ins/Date/prototype/setMonth/S15.9.5.38_A3_T2.js
new file mode 100644
index 0000000000..9238a8ed74
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setMonth/S15.9.5.38_A3_T2.js
@@ -0,0 +1,24 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype.setMonth property "length" has { ReadOnly, !
+    DontDelete, DontEnum } attributes
+esid: sec-date.prototype.setmonth
+description: Checking DontDelete attribute
+---*/
+assert.sameValue(
+  delete Date.prototype.setMonth.length,
+  true,
+  'The value of `delete Date.prototype.setMonth.length` is expected to be true'
+);
+
+assert(
+  !Date.prototype.setMonth.hasOwnProperty('length'),
+  'The value of !Date.prototype.setMonth.hasOwnProperty(\'length\') is expected to be true'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setMonth/S15.9.5.38_A3_T3.js b/js/src/tests/test262/built-ins/Date/prototype/setMonth/S15.9.5.38_A3_T3.js
new file mode 100644
index 0000000000..23f1888331
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setMonth/S15.9.5.38_A3_T3.js
@@ -0,0 +1,22 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype.setMonth property "length" has { ReadOnly, DontDelete,
+    DontEnum } attributes
+esid: sec-date.prototype.setmonth
+description: Checking DontEnum attribute
+---*/
+assert(
+  !Date.prototype.setMonth.propertyIsEnumerable('length'),
+  'The value of !Date.prototype.setMonth.propertyIsEnumerable(\'length\') is expected to be true'
+);
+
+for (var x in Date.prototype.setMonth) {
+  assert.notSameValue(x, "length", 'The value of x is not "length"');
+}
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setMonth/arg-coercion-order.js b/js/src/tests/test262/built-ins/Date/prototype/setMonth/arg-coercion-order.js
new file mode 100644
index 0000000000..a1bc3862af
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setMonth/arg-coercion-order.js
@@ -0,0 +1,43 @@
+// Copyright (C) 2021 Kevin Gibbons. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.setmonth
+description: Order of coercion of provided argument vs NaN check
+info: |
+  1. Let t be ? thisTimeValue(this value).
+  2. Let m be ? ToNumber(month).
+  3. If date is present, let dt be ? ToNumber(date).
+  4. If t is NaN, return NaN.
+  5. Set t to LocalTime(t).
+  6. If date is not present, let dt be DateFromTime(t).
+  7. Let newDate be MakeDate(MakeDay(YearFromTime(t), m, dt), TimeWithinDay(t)).
+  8. Let u be TimeClip(UTC(newDate)).
+  9. Set the [[DateValue]] internal slot of this Date object to u.
+  10. Return u.
+includes: [compareArray.js]
+---*/
+
+var date = new Date(NaN);
+var effects = [];
+var argMonth = {
+  valueOf: function() {
+    effects.push('valueOf month');
+    return 0;
+  }
+};
+var argDate = {
+  valueOf: function() {
+    effects.push('valueOf date');
+    return 0;
+  }
+};
+
+var returnValue = date.setMonth(argMonth, argDate);
+
+var expectedEffects = ['valueOf month', 'valueOf date'];
+
+assert.compareArray(effects, expectedEffects);
+assert.sameValue(returnValue, NaN, 'argument is ignored when `this` is an invalid date');
+assert.sameValue(date.getTime(), NaN, 'argument is ignored when `this` is an invalid date');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setMonth/arg-date-to-number-err.js b/js/src/tests/test262/built-ins/Date/prototype/setMonth/arg-date-to-number-err.js
new file mode 100644
index 0000000000..107b762d8e
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setMonth/arg-date-to-number-err.js
@@ -0,0 +1,27 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.setmonth
+description: Abrupt completion during type coercion of provided "date"
+info: |
+  1. Let t be LocalTime(? thisTimeValue(this value)).
+  2. Let m be ? ToNumber(month).
+  3. If date is not specified, let dt be DateFromTime(t); otherwise, let dt be
+     ? ToNumber(date).
+---*/
+
+var date = new Date();
+var originalValue = date.getTime();
+var obj = {
+  valueOf: function() {
+    throw new Test262Error();
+  }
+};
+
+assert.throws(Test262Error, function() {
+  date.setMonth(0, obj);
+});
+
+assert.sameValue(date.getTime(), originalValue);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setMonth/arg-date-to-number.js b/js/src/tests/test262/built-ins/Date/prototype/setMonth/arg-date-to-number.js
new file mode 100644
index 0000000000..46db557fa8
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setMonth/arg-date-to-number.js
@@ -0,0 +1,77 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.setmonth
+description: Type coercion of provided "date"
+info: |
+  1. Let t be LocalTime(? thisTimeValue(this value)).
+  2. Let m be ? ToNumber(month).
+  3. If date is not specified, let dt be DateFromTime(t); otherwise, let dt be
+     ? ToNumber(date).
+  4. Let newDate be MakeDate(MakeDay(YearFromTime(t), m, dt),
+     TimeWithinDay(t)).
+  5. Let u be TimeClip(UTC(newDate)).
+  6. Set the [[DateValue]] internal slot of this Date object to u.
+  7. Return u.
+---*/
+
+var date = new Date(2016, 6, 7, 11, 36, 23, 2);
+var callCount = 0;
+var arg = {
+  valueOf: function() {
+    args = arguments;
+    thisValue = this;
+    callCount += 1;
+    return 2;
+  }
+};
+var args, thisValue, returnValue;
+
+returnValue = date.setMonth(6, arg);
+
+assert.sameValue(callCount, 1, 'invoked exactly once');
+assert.sameValue(args.length, 0, 'invoked without arguments');
+assert.sameValue(thisValue, arg, '"this" value');
+assert.sameValue(
+  returnValue,
+  new Date(2016, 6, 2, 11, 36, 23, 2).getTime(),
+  'application of specified value'
+);
+
+returnValue = date.setMonth(6, null);
+
+assert.sameValue(
+  returnValue,
+  new Date(2016, 6, 0, 11, 36, 23, 2).getTime(),
+  'null'
+);
+
+returnValue = date.setMonth(6, true);
+
+assert.sameValue(
+  returnValue,
+  new Date(2016, 6, 1, 11, 36, 23, 2).getTime(),
+  'true'
+);
+
+returnValue = date.setMonth(6, false);
+
+assert.sameValue(
+  returnValue,
+  new Date(2016, 6, 0, 11, 36, 23, 2).getTime(),
+  'false'
+);
+
+returnValue = date.setMonth(6, '   +00200.000E-0002	');
+
+assert.sameValue(
+  returnValue,
+  new Date(2016, 6, 2, 11, 36, 23, 2).getTime(),
+  'string'
+);
+
+returnValue = date.setMonth(6, undefined);
+
+assert.sameValue(returnValue, NaN, 'undefined');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setMonth/arg-month-to-number-err.js b/js/src/tests/test262/built-ins/Date/prototype/setMonth/arg-month-to-number-err.js
new file mode 100644
index 0000000000..e1ce3b4cc8
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setMonth/arg-month-to-number-err.js
@@ -0,0 +1,35 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.setmonth
+description: Abrupt completion during type coercion of provided "month"
+info: |
+  1. Let t be LocalTime(? thisTimeValue(this value)).
+  2. If t is NaN, let t be +0; otherwise, let t be LocalTime(t).
+  3. Let y be ? ToNumber(year).
+  4. If month is not specified, let m be MonthFromTime(t); otherwise, let m be
+     ? ToNumber(month).
+---*/
+
+var date = new Date();
+var callCount = 0;
+var originalValue = date.getTime();
+var obj = {
+  valueOf: function() {
+    throw new Test262Error();
+  }
+};
+var counter = {
+  valueOf: function() {
+    callCount += 1;
+  }
+};
+
+assert.throws(Test262Error, function() {
+  date.setMonth(obj, counter);
+});
+
+assert.sameValue(date.getTime(), originalValue);
+assert.sameValue(callCount, 0);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setMonth/arg-month-to-number.js b/js/src/tests/test262/built-ins/Date/prototype/setMonth/arg-month-to-number.js
new file mode 100644
index 0000000000..f1af4d13c2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setMonth/arg-month-to-number.js
@@ -0,0 +1,79 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.setmonth
+description: Type coercion of provided "month"
+info: |
+  1. Let t be ? thisTimeValue(this value).
+  2. If t is NaN, let t be +0; otherwise, let t be LocalTime(t).
+  3. Let y be ? ToNumber(year).
+  4. If month is not specified, let m be MonthFromTime(t); otherwise, let m be
+     ? ToNumber(month).
+  5. If date is not specified, let dt be DateFromTime(t); otherwise, let dt be
+     ? ToNumber(date).
+  6. Let newDate be MakeDate(MakeDay(y, m, dt), TimeWithinDay(t)).
+  7. Let u be TimeClip(UTC(newDate)).
+  8. Set the [[DateValue]] internal slot of this Date object to u.
+  9. Return u.
+---*/
+
+var date = new Date(2016, 6, 7, 11, 36, 23, 2);
+var callCount = 0;
+var arg = {
+  valueOf: function() {
+    args = arguments;
+    thisValue = this;
+    callCount += 1;
+    return 2;
+  }
+};
+var args, thisValue, returnValue;
+
+returnValue = date.setMonth(arg);
+
+assert.sameValue(callCount, 1, 'invoked exactly once');
+assert.sameValue(args.length, 0, 'invoked without arguments');
+assert.sameValue(thisValue, arg, '"this" value');
+assert.sameValue(
+  returnValue,
+  new Date(2016, 2, 7, 11, 36, 23, 2).getTime(),
+  'application of specified value'
+);
+
+returnValue = date.setMonth(null);
+
+assert.sameValue(
+  returnValue,
+  new Date(2016, 0, 7, 11, 36, 23, 2).getTime(),
+  'null'
+);
+
+returnValue = date.setMonth(true);
+
+assert.sameValue(
+  returnValue,
+  new Date(2016, 1, 7, 11, 36, 23, 2).getTime(),
+  'true'
+);
+
+returnValue = date.setMonth(false);
+
+assert.sameValue(
+  returnValue,
+  new Date(2016, 0, 7, 11, 36, 23, 2).getTime(),
+  'false'
+);
+
+returnValue = date.setMonth('   +00200.000E-0002	');
+
+assert.sameValue(
+  returnValue,
+  new Date(2016, 2, 7, 11, 36, 23, 2).getTime(),
+  'string'
+);
+
+returnValue = date.setMonth(undefined);
+
+assert.sameValue(returnValue, NaN, 'undefined');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setMonth/browser.js b/js/src/tests/test262/built-ins/Date/prototype/setMonth/browser.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setMonth/browser.js
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setMonth/name.js b/js/src/tests/test262/built-ins/Date/prototype/setMonth/name.js
new file mode 100644
index 0000000000..9e28f33557
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setMonth/name.js
@@ -0,0 +1,28 @@
+// Copyright (C) 2015 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.prototype.setmonth
+description: >
+  Date.prototype.setMonth.name is "setMonth".
+info: |
+  Date.prototype.setMonth ( month [ , date ] )
+
+  17 ECMAScript Standard Built-in Objects:
+    Every built-in Function object, including constructors, that is not
+    identified as an anonymous function has a name property whose value
+    is a String.
+
+    Unless otherwise specified, the name property of a built-in Function
+    object, if it exists, has the attributes { [[Writable]]: false,
+    [[Enumerable]]: false, [[Configurable]]: true }.
+includes: [propertyHelper.js]
+---*/
+
+assert.sameValue(Date.prototype.setMonth.name, "setMonth");
+
+verifyNotEnumerable(Date.prototype.setMonth, "name");
+verifyNotWritable(Date.prototype.setMonth, "name");
+verifyConfigurable(Date.prototype.setMonth, "name");
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setMonth/new-value-time-clip.js b/js/src/tests/test262/built-ins/Date/prototype/setMonth/new-value-time-clip.js
new file mode 100644
index 0000000000..311f7e4ce6
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setMonth/new-value-time-clip.js
@@ -0,0 +1,43 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.setmonth
+description: Behavior when new value exceeds [[DateValue]] limits
+info: |
+  1. Let t be ? thisTimeValue(this value).
+  2. If t is NaN, let t be +0; otherwise, let t be LocalTime(t).
+  3. Let y be ? ToNumber(year).
+  4. If month is not specified, let m be MonthFromTime(t); otherwise, let m be
+     ? ToNumber(month).
+  5. If date is not specified, let dt be DateFromTime(t); otherwise, let dt be
+     ? ToNumber(date).
+  6. Let newDate be MakeDate(MakeDay(y, m, dt), TimeWithinDay(t)).
+  7. Let u be TimeClip(UTC(newDate)).
+  8. Set the [[DateValue]] internal slot of this Date object to u.
+  9. Return u.
+
+  TimeClip (time)
+
+  1. If time is not finite, return NaN.
+  2. If abs(time) > 8.64 × 1015, return NaN.
+---*/
+
+var maxMs = 8.64e15;
+var maxDate = 12;
+var maxMonth = 8;
+var date = new Date(maxMs);
+var returnValue;
+
+assert.notSameValue(date.getTime(), NaN);
+
+returnValue = date.setMonth(maxMonth + 1);
+
+assert.sameValue(returnValue, NaN, 'overflow due to month');
+
+date = new Date(maxMs);
+
+returnValue = date.setMonth(maxMonth, maxDate + 2);
+
+assert.sameValue(returnValue, NaN, 'overflow due to date');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setMonth/not-a-constructor.js b/js/src/tests/test262/built-ins/Date/prototype/setMonth/not-a-constructor.js
new file mode 100644
index 0000000000..ce51b8a701
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setMonth/not-a-constructor.js
@@ -0,0 +1,35 @@
+// Copyright (C) 2020 Rick Waldron. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-ecmascript-standard-built-in-objects
+description: >
+  Date.prototype.setMonth does not implement [[Construct]], is not new-able
+info: |
+  ECMAScript Function Objects
+
+  Built-in function objects that are not identified as constructors do not
+  implement the [[Construct]] internal method unless otherwise specified in
+  the description of a particular function.
+
+  sec-evaluatenew
+
+  ...
+  7. If IsConstructor(constructor) is false, throw a TypeError exception.
+  ...
+includes: [isConstructor.js]
+features: [Reflect.construct, arrow-function]
+---*/
+
+assert.sameValue(
+  isConstructor(Date.prototype.setMonth),
+  false,
+  'isConstructor(Date.prototype.setMonth) must return false'
+);
+
+assert.throws(TypeError, () => {
+  let date = new Date(Date.now()); new date.setMonth();
+}, '`let date = new Date(Date.now()); new date.setMonth()` throws TypeError');
+
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setMonth/shell.js b/js/src/tests/test262/built-ins/Date/prototype/setMonth/shell.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setMonth/shell.js
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setMonth/this-value-invalid-date.js b/js/src/tests/test262/built-ins/Date/prototype/setMonth/this-value-invalid-date.js
new file mode 100644
index 0000000000..d3e25b5e74
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setMonth/this-value-invalid-date.js
@@ -0,0 +1,34 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.setmonth
+description: >
+  Behavior when the "this" value is a Date object describing an invald date
+info: |
+  1. Let t be LocalTime(? thisTimeValue(this value)).
+  2. Let m be ? ToNumber(month).
+  3. If date is not specified, let dt be DateFromTime(t); otherwise, let dt be
+     ? ToNumber(date).
+  4. Let newDate be MakeDate(MakeDay(YearFromTime(t), m, dt),
+     TimeWithinDay(t)).
+  5. Let u be TimeClip(UTC(newDate)).
+  6. Set the [[DateValue]] internal slot of this Date object to u.
+  7. Return u.
+---*/
+
+var date = new Date(NaN);
+var result;
+
+result = date.setMonth(6);
+
+assert.sameValue(result, NaN, 'return value (month)');
+assert.sameValue(date.getTime(), NaN, '[[DateValue]] internal slot (month)');
+
+date = new Date(NaN);
+
+result = date.setMonth(6, 7);
+
+assert.sameValue(result, NaN, 'return value (date)');
+assert.sameValue(date.getTime(), NaN, '[[DateValue]] internal slot (month)');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setMonth/this-value-non-date.js b/js/src/tests/test262/built-ins/Date/prototype/setMonth/this-value-non-date.js
new file mode 100644
index 0000000000..4b57615917
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setMonth/this-value-non-date.js
@@ -0,0 +1,45 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.setmonth
+description: >
+  Behavior when "this" value is an Object without a [[DateValue]] internal slot
+info: |
+  1. Let t be ? thisTimeValue(this value).
+
+  The abstract operation thisTimeValue(value) performs the following steps:
+
+  1. If Type(value) is Object and value has a [[DateValue]] internal slot, then
+     a. Return value.[[DateValue]].
+  2. Throw a TypeError exception.
+---*/
+
+var setMonth = Date.prototype.setMonth;
+var callCount = 0;
+var arg = {
+  valueOf: function() {
+    callCount += 1;
+    return 1;
+  }
+};
+var args = (function() {
+  return arguments;
+}());
+
+assert.sameValue(typeof setMonth, 'function');
+
+assert.throws(TypeError, function() {
+  setMonth.call({}, arg);
+}, 'ordinary object');
+
+assert.throws(TypeError, function() {
+  setMonth.call([], arg);
+}, 'array exotic object');
+
+assert.throws(TypeError, function() {
+  setMonth.call(args, arg);
+}, 'arguments exotic object');
+
+assert.sameValue(callCount, 0, 'validation precedes input coercion');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setMonth/this-value-non-object.js b/js/src/tests/test262/built-ins/Date/prototype/setMonth/this-value-non-object.js
new file mode 100644
index 0000000000..c43b784447
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setMonth/this-value-non-object.js
@@ -0,0 +1,55 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.setmonth
+description: Behavior when "this" value is not an Object
+info: |
+  1. Let t be ? thisTimeValue(this value).
+
+  The abstract operation thisTimeValue(value) performs the following steps:
+
+  1. If Type(value) is Object and value has a [[DateValue]] internal slot, then
+     a. Return value.[[DateValue]].
+  2. Throw a TypeError exception.
+features: [Symbol]
+---*/
+
+var setMonth = Date.prototype.setMonth;
+var callCount = 0;
+var arg = {
+  valueOf: function() {
+    callCount += 1;
+    return 1;
+  }
+};
+var symbol = Symbol();
+
+assert.sameValue(typeof setMonth, 'function');
+
+assert.throws(TypeError, function() {
+  setMonth.call(0, arg);
+}, 'number');
+
+assert.throws(TypeError, function() {
+  setMonth.call(true, arg);
+}, 'boolean');
+
+assert.throws(TypeError, function() {
+  setMonth.call(null, arg);
+}, 'null');
+
+assert.throws(TypeError, function() {
+  setMonth.call(undefined, arg);
+}, 'undefined');
+
+assert.throws(TypeError, function() {
+  setMonth.call('', arg);
+}, 'string');
+
+assert.throws(TypeError, function() {
+  setMonth.call(symbol, arg);
+}, 'symbol');
+
+assert.sameValue(callCount, 0, 'validation precedes input coercion');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setMonth/this-value-valid-date-date.js b/js/src/tests/test262/built-ins/Date/prototype/setMonth/this-value-valid-date-date.js
new file mode 100644
index 0000000000..ed06da40c3
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setMonth/this-value-valid-date-date.js
@@ -0,0 +1,55 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.setmonth
+description: Return value for valid dates (setting date)
+info: |
+  1. Let t be LocalTime(? thisTimeValue(this value)).
+  2. Let m be ? ToNumber(month).
+  3. If date is not specified, let dt be DateFromTime(t); otherwise, let dt be
+     ? ToNumber(date).
+  4. Let newDate be MakeDate(MakeDay(YearFromTime(t), m, dt),
+     TimeWithinDay(t)).
+  5. Let u be TimeClip(UTC(newDate)).
+  6. Set the [[DateValue]] internal slot of this Date object to u.
+  7. Return u.
+---*/
+
+var date = new Date(2016, 6);
+var returnValue, expected;
+
+returnValue = date.setMonth(6, 6);
+
+expected = new Date(2016, 6, 6).getTime();
+assert.sameValue(
+  returnValue, expected, 'date within unit boundary (return value)'
+);
+assert.sameValue(
+  date.getTime(), expected, 'date within unit boundary ([[DateValue]] slot)'
+);
+
+returnValue = date.setMonth(6, 0);
+
+expected = new Date(2016, 5, 30).getTime();
+assert.sameValue(
+  returnValue, expected, 'date before time unit boundary (return value)'
+);
+assert.sameValue(
+  date.getTime(),
+  expected,
+  'date before time unit boundary ([[DateValue]] slot)'
+);
+
+returnValue = date.setMonth(5, 31);
+
+expected = new Date(2016, 6, 1).getTime();
+assert.sameValue(
+  returnValue, expected, 'date after time unit boundary (return value)'
+);
+assert.sameValue(
+  date.getTime(),
+  expected,
+  'date after time unit boundary ([[DateValue]] slot)'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setMonth/this-value-valid-date-month.js b/js/src/tests/test262/built-ins/Date/prototype/setMonth/this-value-valid-date-month.js
new file mode 100644
index 0000000000..f4ba0fc61d
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setMonth/this-value-valid-date-month.js
@@ -0,0 +1,55 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.setmonth
+description: Return value for valid dates (setting month)
+info: |
+  1. Let t be LocalTime(? thisTimeValue(this value)).
+  2. Let m be ? ToNumber(month).
+  3. If date is not specified, let dt be DateFromTime(t); otherwise, let dt be
+     ? ToNumber(date).
+  4. Let newDate be MakeDate(MakeDay(YearFromTime(t), m, dt),
+     TimeWithinDay(t)).
+  5. Let u be TimeClip(UTC(newDate)).
+  6. Set the [[DateValue]] internal slot of this Date object to u.
+  7. Return u.
+---*/
+
+var date = new Date(2016, 6);
+var returnValue, expected;
+
+returnValue = date.setMonth(3);
+
+expected = new Date(2016, 3).getTime();
+assert.sameValue(
+  returnValue, expected, 'month within unit boundary (return value)'
+);
+assert.sameValue(
+  date.getTime(), expected, 'month within unit boundary ([[DateValue]] slot)'
+);
+
+returnValue = date.setMonth(-1);
+
+expected = new Date(2015, 11).getTime();
+assert.sameValue(
+  returnValue, expected, 'month before time unit boundary (return value)'
+);
+assert.sameValue(
+  date.getTime(),
+  expected,
+  'month before time unit boundary ([[DateValue]] slot)'
+);
+
+returnValue = date.setMonth(12);
+
+expected = new Date(2016, 0).getTime();
+assert.sameValue(
+  returnValue, expected, 'month after time unit boundary (return value)'
+);
+assert.sameValue(
+  date.getTime(),
+  expected,
+  'month after time unit boundary ([[DateValue]] slot)'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setSeconds/S15.9.5.30_A1_T1.js b/js/src/tests/test262/built-ins/Date/prototype/setSeconds/S15.9.5.30_A1_T1.js
new file mode 100644
index 0000000000..80cacf2f6a
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setSeconds/S15.9.5.30_A1_T1.js
@@ -0,0 +1,25 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype property "setSeconds" has { DontEnum } attributes
+esid: sec-date.prototype.setseconds
+description: Checking absence of ReadOnly attribute
+---*/
+
+var x = Date.prototype.setSeconds;
+if (x === 1) {
+  Date.prototype.setSeconds = 2;
+} else {
+  Date.prototype.setSeconds = 1;
+}
+
+assert.notSameValue(
+  Date.prototype.setSeconds,
+  x,
+  'The value of Date.prototype.setSeconds is expected to not equal the value of `x`'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setSeconds/S15.9.5.30_A1_T2.js b/js/src/tests/test262/built-ins/Date/prototype/setSeconds/S15.9.5.30_A1_T2.js
new file mode 100644
index 0000000000..8d6c81ce9a
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setSeconds/S15.9.5.30_A1_T2.js
@@ -0,0 +1,22 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype property "setSeconds" has { DontEnum } attributes
+esid: sec-date.prototype.setseconds
+description: Checking absence of DontDelete attribute
+---*/
+assert.notSameValue(
+  delete Date.prototype.setSeconds,
+  false,
+  'The value of delete Date.prototype.setSeconds is not false'
+);
+
+assert(
+  !Date.prototype.hasOwnProperty('setSeconds'),
+  'The value of !Date.prototype.hasOwnProperty(\'setSeconds\') is expected to be true'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setSeconds/S15.9.5.30_A1_T3.js b/js/src/tests/test262/built-ins/Date/prototype/setSeconds/S15.9.5.30_A1_T3.js
new file mode 100644
index 0000000000..0692617eb2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setSeconds/S15.9.5.30_A1_T3.js
@@ -0,0 +1,20 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype property "setSeconds" has { DontEnum } attributes
+esid: sec-date.prototype.setseconds
+description: Checking DontEnum attribute
+---*/
+assert(
+  !Date.prototype.propertyIsEnumerable('setSeconds'),
+  'The value of !Date.prototype.propertyIsEnumerable(\'setSeconds\') is expected to be true'
+);
+
+for (var x in Date.prototype) {
+  assert.notSameValue(x, "setSeconds", 'The value of x is not "setSeconds"');
+}
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setSeconds/S15.9.5.30_A2_T1.js b/js/src/tests/test262/built-ins/Date/prototype/setSeconds/S15.9.5.30_A2_T1.js
new file mode 100644
index 0000000000..dcac968a56
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setSeconds/S15.9.5.30_A2_T1.js
@@ -0,0 +1,21 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The "length" property of the "setSeconds" is 2
+esid: sec-date.prototype.setseconds
+description: The "length" property of the "setSeconds" is 2
+---*/
+assert.sameValue(
+  Date.prototype.setSeconds.hasOwnProperty("length"),
+  true,
+  'Date.prototype.setSeconds.hasOwnProperty("length") must return true'
+);
+
+assert.sameValue(
+  Date.prototype.setSeconds.length,
+  2,
+  'The value of Date.prototype.setSeconds.length is expected to be 2'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setSeconds/S15.9.5.30_A3_T1.js b/js/src/tests/test262/built-ins/Date/prototype/setSeconds/S15.9.5.30_A3_T1.js
new file mode 100644
index 0000000000..5a240eca98
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setSeconds/S15.9.5.30_A3_T1.js
@@ -0,0 +1,24 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype.setSeconds property "length" has { ReadOnly,
+    DontDelete, DontEnum } attributes
+esid: sec-date.prototype.setseconds
+description: Checking ReadOnly attribute
+includes: [propertyHelper.js]
+---*/
+
+var x = Date.prototype.setSeconds.length;
+verifyNotWritable(Date.prototype.setSeconds, "length", null, 1);
+
+assert.sameValue(
+  Date.prototype.setSeconds.length,
+  x,
+  'The value of Date.prototype.setSeconds.length is expected to equal the value of x'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setSeconds/S15.9.5.30_A3_T2.js b/js/src/tests/test262/built-ins/Date/prototype/setSeconds/S15.9.5.30_A3_T2.js
new file mode 100644
index 0000000000..789bca4e48
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setSeconds/S15.9.5.30_A3_T2.js
@@ -0,0 +1,24 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype.setSeconds property "length" has { ReadOnly, !
+    DontDelete, DontEnum } attributes
+esid: sec-date.prototype.setseconds
+description: Checking DontDelete attribute
+---*/
+assert.sameValue(
+  delete Date.prototype.setSeconds.length,
+  true,
+  'The value of `delete Date.prototype.setSeconds.length` is expected to be true'
+);
+
+assert(
+  !Date.prototype.setSeconds.hasOwnProperty('length'),
+  'The value of !Date.prototype.setSeconds.hasOwnProperty(\'length\') is expected to be true'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setSeconds/S15.9.5.30_A3_T3.js b/js/src/tests/test262/built-ins/Date/prototype/setSeconds/S15.9.5.30_A3_T3.js
new file mode 100644
index 0000000000..80e814d9dd
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setSeconds/S15.9.5.30_A3_T3.js
@@ -0,0 +1,22 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype.setSeconds property "length" has { ReadOnly,
+    DontDelete, DontEnum } attributes
+esid: sec-date.prototype.setseconds
+description: Checking DontEnum attribute
+---*/
+assert(
+  !Date.prototype.setSeconds.propertyIsEnumerable('length'),
+  'The value of !Date.prototype.setSeconds.propertyIsEnumerable(\'length\') is expected to be true'
+);
+
+for (var x in Date.prototype.setSeconds) {
+  assert.notSameValue(x, "length", 'The value of x is not "length"');
+}
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setSeconds/arg-coercion-order.js b/js/src/tests/test262/built-ins/Date/prototype/setSeconds/arg-coercion-order.js
new file mode 100644
index 0000000000..1cbc4420c4
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setSeconds/arg-coercion-order.js
@@ -0,0 +1,43 @@
+// Copyright (C) 2021 Kevin Gibbons. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.setseconds
+description: Order of coercion of provided arguments vs NaN check
+info: |
+  1. Let t be ? thisTimeValue(this value).
+  2. Let s be ? ToNumber(sec).
+  3. If ms is present, let milli be ? ToNumber(ms).
+  4. If t is NaN, return NaN.
+  5. Set t to LocalTime(t).
+  6. If ms is not present, let milli be msFromTime(t).
+  7. Let date be MakeDate(Day(t), MakeTime(HourFromTime(t), MinFromTime(t), s, milli)).
+  8. Let u be TimeClip(UTC(date)).
+  9. Set the [[DateValue]] internal slot of this Date object to u.
+  10. Return u.
+includes: [compareArray.js]
+---*/
+
+var date = new Date(NaN);
+var effects = [];
+var argSec = {
+  valueOf: function() {
+    effects.push('valueOf sec');
+    return 0;
+  }
+};
+var argMs = {
+  valueOf: function() {
+    effects.push('valueOf ms');
+    return 0;
+  }
+};
+
+var returnValue = date.setSeconds(argSec, argMs);
+
+var expectedEffects = ['valueOf sec', 'valueOf ms'];
+
+assert.compareArray(effects, expectedEffects);
+assert.sameValue(returnValue, NaN, 'argument is ignored when `this` is an invalid date');
+assert.sameValue(date.getTime(), NaN, 'argument is ignored when `this` is an invalid date');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setSeconds/arg-ms-to-number-err.js b/js/src/tests/test262/built-ins/Date/prototype/setSeconds/arg-ms-to-number-err.js
new file mode 100644
index 0000000000..abde04c4d0
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setSeconds/arg-ms-to-number-err.js
@@ -0,0 +1,27 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.setseconds
+description: Abrupt completion during type coercion of provided "ms"
+info: |
+  1. Let t be LocalTime(? thisTimeValue(this value)).
+  2. Let s be ? ToNumber(sec).
+  3. If ms is not specified, let milli be msFromTime(t); otherwise, let milli
+     be ? ToNumber(ms).
+---*/
+
+var date = new Date();
+var originalValue = date.getTime();
+var obj = {
+  valueOf: function() {
+    throw new Test262Error();
+  }
+};
+
+assert.throws(Test262Error, function() {
+  date.setSeconds(0, obj);
+});
+
+assert.sameValue(date.getTime(), originalValue);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setSeconds/arg-ms-to-number.js b/js/src/tests/test262/built-ins/Date/prototype/setSeconds/arg-ms-to-number.js
new file mode 100644
index 0000000000..daff2f09ed
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setSeconds/arg-ms-to-number.js
@@ -0,0 +1,65 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.setseconds
+description: Type coercion of provided "ms"
+info: |
+  1. Let t be LocalTime(? thisTimeValue(this value)).
+  2. Let s be ? ToNumber(sec).
+  3. If ms is not specified, let milli be msFromTime(t); otherwise, let milli
+     be ? ToNumber(ms).
+  4. Let date be MakeDate(Day(t), MakeTime(HourFromTime(t), MinFromTime(t), s,
+     milli)).
+  5. Let u be TimeClip(UTC(date)).
+  6. Set the [[DateValue]] internal slot of this Date object to u.
+  7. Return u.
+---*/
+
+var date = new Date(2016, 6);
+var callCount = 0;
+var arg = {
+  valueOf: function() {
+    args = arguments;
+    thisValue = this;
+    callCount += 1;
+    return 2;
+  }
+};
+var args, thisValue, returnValue;
+
+returnValue = date.setSeconds(0, arg);
+
+assert.sameValue(callCount, 1, 'invoked exactly once');
+assert.sameValue(args.length, 0, 'invoked without arguments');
+assert.sameValue(thisValue, arg, '"this" value');
+assert.sameValue(
+  returnValue,
+  new Date(2016, 6, 1, 0, 0, 0, 2).getTime(),
+  'application of specified value'
+);
+
+returnValue = date.setSeconds(0, null);
+
+assert.sameValue(returnValue, new Date(2016, 6, 1).getTime(), 'null');
+
+returnValue = date.setSeconds(0, true);
+
+assert.sameValue(
+  returnValue, new Date(2016, 6, 1, 0, 0, 0, 1).getTime(), 'true'
+);
+
+returnValue = date.setSeconds(0, false);
+
+assert.sameValue(returnValue, new Date(2016, 6, 1).getTime(), 'false');
+
+returnValue = date.setSeconds(0, '   +00200.000E-0002	');
+
+assert.sameValue(
+  returnValue, new Date(2016, 6, 1, 0, 0, 0, 2).getTime(), 'string'
+);
+
+returnValue = date.setSeconds(0, undefined);
+
+assert.sameValue(returnValue, NaN, 'undefined');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setSeconds/arg-sec-to-number-err.js b/js/src/tests/test262/built-ins/Date/prototype/setSeconds/arg-sec-to-number-err.js
new file mode 100644
index 0000000000..c9dd0a499b
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setSeconds/arg-sec-to-number-err.js
@@ -0,0 +1,32 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.setseconds
+description: Abrupt completion during type coercion of provided "sec"
+info: |
+  1. Let t be LocalTime(? thisTimeValue(this value)).
+  2. Let s be ? ToNumber(sec).
+---*/
+
+var date = new Date();
+var callCount = 0;
+var originalValue = date.getTime();
+var obj = {
+  valueOf: function() {
+    throw new Test262Error();
+  }
+};
+var counter = {
+  valueOf: function() {
+    callCount += 1;
+  }
+};
+
+assert.throws(Test262Error, function() {
+  date.setSeconds(obj, counter);
+});
+
+assert.sameValue(date.getTime(), originalValue);
+assert.sameValue(callCount, 0);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setSeconds/arg-sec-to-number.js b/js/src/tests/test262/built-ins/Date/prototype/setSeconds/arg-sec-to-number.js
new file mode 100644
index 0000000000..c75b2ba52a
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setSeconds/arg-sec-to-number.js
@@ -0,0 +1,63 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.setseconds
+description: Type coercion of provided "sec"
+info: |
+  1. Let t be LocalTime(? thisTimeValue(this value)).
+  2. Let s be ? ToNumber(sec).
+  3. If ms is not specified, let milli be msFromTime(t); otherwise, let milli
+     be ? ToNumber(ms).
+  4. Let date be MakeDate(Day(t), MakeTime(HourFromTime(t), MinFromTime(t), s,
+     milli)).
+  5. Let u be TimeClip(UTC(date)).
+  6. Set the [[DateValue]] internal slot of this Date object to u.
+  7. Return u.
+---*/
+
+var date = new Date(2016, 6);
+var callCount = 0;
+var arg = {
+  valueOf: function() {
+    args = arguments;
+    thisValue = this;
+    callCount += 1;
+    return 2;
+  }
+};
+var args, thisValue, returnValue;
+
+returnValue = date.setSeconds(arg);
+
+assert.sameValue(callCount, 1, 'invoked exactly once');
+assert.sameValue(args.length, 0, 'invoked without arguments');
+assert.sameValue(thisValue, arg, '"this" value');
+assert.sameValue(
+  returnValue,
+  new Date(2016, 6, 1, 0, 0, 2).getTime(),
+  'application of specified value'
+);
+
+returnValue = date.setSeconds(null);
+
+assert.sameValue(returnValue, new Date(2016, 6, 1).getTime(), 'null');
+
+returnValue = date.setSeconds(true);
+
+assert.sameValue(returnValue, new Date(2016, 6, 1, 0, 0, 1).getTime(), 'true');
+
+returnValue = date.setSeconds(false);
+
+assert.sameValue(returnValue, new Date(2016, 6, 1).getTime(), 'false');
+
+returnValue = date.setSeconds('   +00200.000E-0002	');
+
+assert.sameValue(
+  returnValue, new Date(2016, 6, 1, 0, 0, 2).getTime(), 'string'
+);
+
+returnValue = date.setSeconds();
+
+assert.sameValue(returnValue, NaN, 'undefined');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setSeconds/browser.js b/js/src/tests/test262/built-ins/Date/prototype/setSeconds/browser.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setSeconds/browser.js
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setSeconds/name.js b/js/src/tests/test262/built-ins/Date/prototype/setSeconds/name.js
new file mode 100644
index 0000000000..1850428386
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setSeconds/name.js
@@ -0,0 +1,28 @@
+// Copyright (C) 2015 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.prototype.setseconds
+description: >
+  Date.prototype.setSeconds.name is "setSeconds".
+info: |
+  Date.prototype.setSeconds ( sec [ , ms ] )
+
+  17 ECMAScript Standard Built-in Objects:
+    Every built-in Function object, including constructors, that is not
+    identified as an anonymous function has a name property whose value
+    is a String.
+
+    Unless otherwise specified, the name property of a built-in Function
+    object, if it exists, has the attributes { [[Writable]]: false,
+    [[Enumerable]]: false, [[Configurable]]: true }.
+includes: [propertyHelper.js]
+---*/
+
+assert.sameValue(Date.prototype.setSeconds.name, "setSeconds");
+
+verifyNotEnumerable(Date.prototype.setSeconds, "name");
+verifyNotWritable(Date.prototype.setSeconds, "name");
+verifyConfigurable(Date.prototype.setSeconds, "name");
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setSeconds/new-value-time-clip.js b/js/src/tests/test262/built-ins/Date/prototype/setSeconds/new-value-time-clip.js
new file mode 100644
index 0000000000..533ee21aa4
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setSeconds/new-value-time-clip.js
@@ -0,0 +1,39 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.setseconds
+description: Behavior when new value exceeds [[DateValue]] limits
+info: |
+  1. Let t be LocalTime(? thisTimeValue(this value)).
+  2. Let s be ? ToNumber(sec).
+  3. If ms is not specified, let milli be msFromTime(t); otherwise, let milli
+     be ? ToNumber(ms).
+  4. Let date be MakeDate(Day(t), MakeTime(HourFromTime(t), MinFromTime(t), s,
+     milli)).
+  5. Let u be TimeClip(UTC(date)).
+  6. Set the [[DateValue]] internal slot of this Date object to u.
+  7. Return u.
+
+  TimeClip (time)
+
+  1. If time is not finite, return NaN.
+  2. If abs(time) > 8.64 × 1015, return NaN.
+---*/
+
+var maxMs = 8.64e15;
+var date = new Date(maxMs);
+var returnValue;
+
+assert.notSameValue(date.getTime(), NaN);
+
+returnValue = date.setSeconds(24 * 60 * 60);
+
+assert.sameValue(returnValue, NaN, 'overflow due to seconds');
+
+date = new Date(maxMs);
+
+returnValue = date.setSeconds(0, 24 * 60 * 60 * 1000);
+
+assert.sameValue(returnValue, NaN, 'overflow due to milliseconds');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setSeconds/not-a-constructor.js b/js/src/tests/test262/built-ins/Date/prototype/setSeconds/not-a-constructor.js
new file mode 100644
index 0000000000..47cfa721dd
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setSeconds/not-a-constructor.js
@@ -0,0 +1,35 @@
+// Copyright (C) 2020 Rick Waldron. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-ecmascript-standard-built-in-objects
+description: >
+  Date.prototype.setSeconds does not implement [[Construct]], is not new-able
+info: |
+  ECMAScript Function Objects
+
+  Built-in function objects that are not identified as constructors do not
+  implement the [[Construct]] internal method unless otherwise specified in
+  the description of a particular function.
+
+  sec-evaluatenew
+
+  ...
+  7. If IsConstructor(constructor) is false, throw a TypeError exception.
+  ...
+includes: [isConstructor.js]
+features: [Reflect.construct, arrow-function]
+---*/
+
+assert.sameValue(
+  isConstructor(Date.prototype.setSeconds),
+  false,
+  'isConstructor(Date.prototype.setSeconds) must return false'
+);
+
+assert.throws(TypeError, () => {
+  let date = new Date(Date.now()); new date.setSeconds();
+}, '`let date = new Date(Date.now()); new date.setSeconds()` throws TypeError');
+
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setSeconds/shell.js b/js/src/tests/test262/built-ins/Date/prototype/setSeconds/shell.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setSeconds/shell.js
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setSeconds/this-value-invalid-date.js b/js/src/tests/test262/built-ins/Date/prototype/setSeconds/this-value-invalid-date.js
new file mode 100644
index 0000000000..5c587952f5
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setSeconds/this-value-invalid-date.js
@@ -0,0 +1,32 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.setseconds
+description: >
+  Behavior when the "this" value is a Date object describing an invald date
+info: |
+  1. Let t be LocalTime(? thisTimeValue(this value)).
+  2. Let s be ? ToNumber(sec).
+  3. If ms is not specified, let milli be msFromTime(t); otherwise, let milli
+     be ? ToNumber(ms).
+  4. Let date be MakeDate(Day(t), MakeTime(HourFromTime(t), MinFromTime(t), s,
+     milli)).
+  5. Let u be TimeClip(UTC(date)).
+  6. Set the [[DateValue]] internal slot of this Date object to u.
+  7. Return u.
+---*/
+
+var date = new Date(NaN);
+var result;
+
+result = date.setSeconds(0);
+
+assert.sameValue(result, NaN, 'return value (second)');
+assert.sameValue(date.getTime(), NaN, '[[DateValue]] internal slot (second)');
+
+result = date.setSeconds(0, 0);
+
+assert.sameValue(result, NaN, 'return value (ms)');
+assert.sameValue(date.getTime(), NaN, '[[DateValue]] internal slot (ms)');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setSeconds/this-value-non-date.js b/js/src/tests/test262/built-ins/Date/prototype/setSeconds/this-value-non-date.js
new file mode 100644
index 0000000000..4905c669bd
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setSeconds/this-value-non-date.js
@@ -0,0 +1,45 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.setseconds
+description: >
+  Behavior when "this" value is an Object without a [[DateValue]] internal slot
+info: |
+  1. Let t be LocalTime(? thisTimeValue(this value)).
+
+  The abstract operation thisTimeValue(value) performs the following steps:
+
+  1. If Type(value) is Object and value has a [[DateValue]] internal slot, then
+     a. Return value.[[DateValue]].
+  2. Throw a TypeError exception.
+---*/
+
+var setSeconds = Date.prototype.setSeconds;
+var callCount = 0;
+var arg = {
+  valueOf: function() {
+    callCount += 1;
+    return 1;
+  }
+};
+var args = (function() {
+  return arguments;
+}());
+
+assert.sameValue(typeof setSeconds, 'function');
+
+assert.throws(TypeError, function() {
+  setSeconds.call({}, arg);
+}, 'ordinary object');
+
+assert.throws(TypeError, function() {
+  setSeconds.call([], arg);
+}, 'array exotic object');
+
+assert.throws(TypeError, function() {
+  setSeconds.call(args, arg);
+}, 'arguments exotic object');
+
+assert.sameValue(callCount, 0, 'validation precedes input coercion');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setSeconds/this-value-non-object.js b/js/src/tests/test262/built-ins/Date/prototype/setSeconds/this-value-non-object.js
new file mode 100644
index 0000000000..f977f32a26
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setSeconds/this-value-non-object.js
@@ -0,0 +1,55 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.setseconds
+description: Behavior when "this" value is not an Object
+info: |
+  1. Let t be LocalTime(? thisTimeValue(this value)).
+
+  The abstract operation thisTimeValue(value) performs the following steps:
+
+  1. If Type(value) is Object and value has a [[DateValue]] internal slot, then
+     a. Return value.[[DateValue]].
+  2. Throw a TypeError exception.
+features: [Symbol]
+---*/
+
+var setSeconds = Date.prototype.setSeconds;
+var callCount = 0;
+var arg = {
+  valueOf: function() {
+    callCount += 1;
+    return 1;
+  }
+};
+var symbol = Symbol();
+
+assert.sameValue(typeof setSeconds, 'function');
+
+assert.throws(TypeError, function() {
+  setSeconds.call(0, arg);
+}, 'number');
+
+assert.throws(TypeError, function() {
+  setSeconds.call(true, arg);
+}, 'boolean');
+
+assert.throws(TypeError, function() {
+  setSeconds.call(null, arg);
+}, 'null');
+
+assert.throws(TypeError, function() {
+  setSeconds.call(undefined, arg);
+}, 'undefined');
+
+assert.throws(TypeError, function() {
+  setSeconds.call('', arg);
+}, 'string');
+
+assert.throws(TypeError, function() {
+  setSeconds.call(symbol, arg);
+}, 'symbol');
+
+assert.sameValue(callCount, 0, 'validation precedes input coercion');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setSeconds/this-value-valid-date-ms.js b/js/src/tests/test262/built-ins/Date/prototype/setSeconds/this-value-valid-date-ms.js
new file mode 100644
index 0000000000..9b1d89ff07
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setSeconds/this-value-valid-date-ms.js
@@ -0,0 +1,57 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.setseconds
+description: Return value for valid dates (setting ms)
+info: |
+  1. Let t be LocalTime(? thisTimeValue(this value)).
+  2. Let s be ? ToNumber(sec).
+  3. If ms is not specified, let milli be msFromTime(t); otherwise, let milli
+     be ? ToNumber(ms).
+  4. Let date be MakeDate(Day(t), MakeTime(HourFromTime(t), MinFromTime(t), s,
+     milli)).
+  5. Let u be TimeClip(UTC(date)).
+  6. Set the [[DateValue]] internal slot of this Date object to u.
+  7. Return u.
+---*/
+
+var date = new Date(2016, 6);
+var returnValue, expected;
+
+returnValue = date.setSeconds(0, 543);
+
+expected = new Date(2016, 6, 1, 0, 0, 0, 543).getTime();
+assert.sameValue(
+  returnValue, expected, 'millisecond within unit boundary (return value)'
+);
+assert.sameValue(
+  date.getTime(),
+  expected,
+  'millisecond within unit boundary ([[DateValue]] slot)'
+);
+
+returnValue = date.setSeconds(0, -1);
+
+expected = new Date(2016, 5, 30, 23, 59, 59, 999).getTime();
+assert.sameValue(
+  returnValue, expected, 'millisecond before time unit boundary (return value)'
+);
+assert.sameValue(
+  date.getTime(),
+  expected,
+  'millisecond before time unit boundary ([[DateValue]] slot)'
+);
+
+returnValue = date.setSeconds(0, 1000);
+
+expected = new Date(2016, 5, 30, 23, 59, 1).getTime();
+assert.sameValue(
+  returnValue, expected, 'millisecond after time unit boundary (return value)'
+);
+assert.sameValue(
+  date.getTime(),
+  expected,
+  'millisecond after time unit boundary ([[DateValue]] slot)'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setSeconds/this-value-valid-date-sec.js b/js/src/tests/test262/built-ins/Date/prototype/setSeconds/this-value-valid-date-sec.js
new file mode 100644
index 0000000000..27075d0610
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setSeconds/this-value-valid-date-sec.js
@@ -0,0 +1,55 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.setseconds
+description: Return value for valid dates (setting sec)
+info: |
+  1. Let t be LocalTime(? thisTimeValue(this value)).
+  2. Let s be ? ToNumber(sec).
+  3. If ms is not specified, let milli be msFromTime(t); otherwise, let milli
+     be ? ToNumber(ms).
+  4. Let date be MakeDate(Day(t), MakeTime(HourFromTime(t), MinFromTime(t), s,
+     milli)).
+  5. Let u be TimeClip(UTC(date)).
+  6. Set the [[DateValue]] internal slot of this Date object to u.
+  7. Return u.
+---*/
+
+var date = new Date(2016, 6);
+var returnValue, expected;
+
+returnValue = date.setSeconds(45);
+
+expected = new Date(2016, 6, 1, 0, 0, 45).getTime();
+assert.sameValue(
+  returnValue, expected, 'second within unit boundary (return value)'
+);
+assert.sameValue(
+  date.getTime(), expected, 'second within unit boundary ([[DateValue]] slot)'
+);
+
+returnValue = date.setSeconds(-1);
+
+expected = new Date(2016, 5, 30, 23, 59, 59).getTime();
+assert.sameValue(
+  returnValue, expected, 'second before time unit boundary (return value)'
+);
+assert.sameValue(
+  date.getTime(),
+  expected,
+  'second before time unit boundary ([[DateValue]] slot)'
+);
+
+returnValue = date.setSeconds(60);
+
+expected = new Date(2016, 6).getTime();
+assert.sameValue(
+  returnValue, expected, 'second after time unit boundary (return value)'
+);
+assert.sameValue(
+  date.getTime(),
+  expected,
+  'second after time unit boundary ([[DateValue]] slot)'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setTime/S15.9.5.27_A1_T1.js b/js/src/tests/test262/built-ins/Date/prototype/setTime/S15.9.5.27_A1_T1.js
new file mode 100644
index 0000000000..cdd891deac
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setTime/S15.9.5.27_A1_T1.js
@@ -0,0 +1,25 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype property "setTime" has { DontEnum } attributes
+esid: sec-date.prototype.settime
+description: Checking absence of ReadOnly attribute
+---*/
+
+var x = Date.prototype.setTime;
+if (x === 1) {
+  Date.prototype.setTime = 2;
+} else {
+  Date.prototype.setTime = 1;
+}
+
+assert.notSameValue(
+  Date.prototype.setTime,
+  x,
+  'The value of Date.prototype.setTime is expected to not equal the value of `x`'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setTime/S15.9.5.27_A1_T2.js b/js/src/tests/test262/built-ins/Date/prototype/setTime/S15.9.5.27_A1_T2.js
new file mode 100644
index 0000000000..3d425994ab
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setTime/S15.9.5.27_A1_T2.js
@@ -0,0 +1,18 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype property "setTime" has { DontEnum } attributes
+esid: sec-date.prototype.settime
+description: Checking absence of DontDelete attribute
+---*/
+assert.notSameValue(delete Date.prototype.setTime, false, 'The value of delete Date.prototype.setTime is not false');
+
+assert(
+  !Date.prototype.hasOwnProperty('setTime'),
+  'The value of !Date.prototype.hasOwnProperty(\'setTime\') is expected to be true'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setTime/S15.9.5.27_A1_T3.js b/js/src/tests/test262/built-ins/Date/prototype/setTime/S15.9.5.27_A1_T3.js
new file mode 100644
index 0000000000..78164e813d
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setTime/S15.9.5.27_A1_T3.js
@@ -0,0 +1,20 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype property "setTime" has { DontEnum } attributes
+esid: sec-date.prototype.settime
+description: Checking DontEnum attribute
+---*/
+assert(
+  !Date.prototype.propertyIsEnumerable('setTime'),
+  'The value of !Date.prototype.propertyIsEnumerable(\'setTime\') is expected to be true'
+);
+
+for (var x in Date.prototype) {
+  assert.notSameValue(x, "setTime", 'The value of x is not "setTime"');
+}
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setTime/S15.9.5.27_A2_T1.js b/js/src/tests/test262/built-ins/Date/prototype/setTime/S15.9.5.27_A2_T1.js
new file mode 100644
index 0000000000..a4fa4209a2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setTime/S15.9.5.27_A2_T1.js
@@ -0,0 +1,17 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The "length" property of the "setTime" is 1
+esid: sec-date.prototype.settime
+description: The "length" property of the "setTime" is 1
+---*/
+assert.sameValue(
+  Date.prototype.setTime.hasOwnProperty("length"),
+  true,
+  'Date.prototype.setTime.hasOwnProperty("length") must return true'
+);
+
+assert.sameValue(Date.prototype.setTime.length, 1, 'The value of Date.prototype.setTime.length is expected to be 1');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setTime/S15.9.5.27_A3_T1.js b/js/src/tests/test262/built-ins/Date/prototype/setTime/S15.9.5.27_A3_T1.js
new file mode 100644
index 0000000000..4ef36f2f25
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setTime/S15.9.5.27_A3_T1.js
@@ -0,0 +1,24 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype.setTime property "length" has { ReadOnly, DontDelete,
+    DontEnum } attributes
+esid: sec-date.prototype.settime
+description: Checking ReadOnly attribute
+includes: [propertyHelper.js]
+---*/
+
+var x = Date.prototype.setTime.length;
+verifyNotWritable(Date.prototype.setTime, "length", null, 1);
+
+assert.sameValue(
+  Date.prototype.setTime.length,
+  x,
+  'The value of Date.prototype.setTime.length is expected to equal the value of x'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setTime/S15.9.5.27_A3_T2.js b/js/src/tests/test262/built-ins/Date/prototype/setTime/S15.9.5.27_A3_T2.js
new file mode 100644
index 0000000000..b66fe9c598
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setTime/S15.9.5.27_A3_T2.js
@@ -0,0 +1,24 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype.setTime property "length" has { ReadOnly, !
+    DontDelete, DontEnum } attributes
+esid: sec-date.prototype.settime
+description: Checking DontDelete attribute
+---*/
+assert.sameValue(
+  delete Date.prototype.setTime.length,
+  true,
+  'The value of `delete Date.prototype.setTime.length` is expected to be true'
+);
+
+assert(
+  !Date.prototype.setTime.hasOwnProperty('length'),
+  'The value of !Date.prototype.setTime.hasOwnProperty(\'length\') is expected to be true'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setTime/S15.9.5.27_A3_T3.js b/js/src/tests/test262/built-ins/Date/prototype/setTime/S15.9.5.27_A3_T3.js
new file mode 100644
index 0000000000..9a6bd16d4c
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setTime/S15.9.5.27_A3_T3.js
@@ -0,0 +1,22 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype.setTime property "length" has { ReadOnly, DontDelete,
+    DontEnum } attributes
+esid: sec-date.prototype.settime
+description: Checking DontEnum attribute
+---*/
+assert(
+  !Date.prototype.setTime.propertyIsEnumerable('length'),
+  'The value of !Date.prototype.setTime.propertyIsEnumerable(\'length\') is expected to be true'
+);
+
+for (var x in Date.prototype.setTime) {
+  assert.notSameValue(x, "length", 'The value of x is not "length"');
+}
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setTime/arg-to-number-err.js b/js/src/tests/test262/built-ins/Date/prototype/setTime/arg-to-number-err.js
new file mode 100644
index 0000000000..4ce961f808
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setTime/arg-to-number-err.js
@@ -0,0 +1,25 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.settime
+description: Abrupt completion during type coercion of provided argument
+info: |
+  1. Perform ? thisTimeValue(this value).
+  2. Let t be ? ToNumber(time).
+---*/
+
+var date = new Date();
+var originalValue = date.getTime();
+var obj = {
+  valueOf: function() {
+    throw new Test262Error();
+  }
+};
+
+assert.throws(Test262Error, function() {
+  date.setTime(obj);
+});
+
+assert.sameValue(date.getTime(), originalValue);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setTime/arg-to-number.js b/js/src/tests/test262/built-ins/Date/prototype/setTime/arg-to-number.js
new file mode 100644
index 0000000000..daa2553131
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setTime/arg-to-number.js
@@ -0,0 +1,53 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.settime
+description: Type coercion of provided argument
+info: |
+  1. Perform ? thisTimeValue(this value).
+  2. Let t be ? ToNumber(time).
+  3. Let v be TimeClip(t).
+  4. Set the [[DateValue]] internal slot of this Date object to v.
+  5. Return v.
+---*/
+
+var date = new Date(2016, 6);
+var callCount = 0;
+var arg = {
+  valueOf: function() {
+    args = arguments;
+    thisValue = this;
+    callCount += 1;
+    return 2;
+  }
+};
+var args, thisValue, returnValue;
+
+returnValue = date.setTime(arg);
+
+assert.sameValue(callCount, 1, 'invoked exactly once');
+assert.sameValue(args.length, 0, 'invoked without arguments');
+assert.sameValue(thisValue, arg, '"this" value');
+assert.sameValue(returnValue, 2, 'application of specified value');
+
+returnValue = date.setTime(null);
+
+assert.sameValue(returnValue, 0, 'null');
+
+returnValue = date.setTime(true);
+
+assert.sameValue(returnValue, 1, 'true');
+
+returnValue = date.setTime(false);
+
+assert.sameValue(returnValue, 0, 'false');
+
+returnValue = date.setTime('   +00200.000E-0002	');
+
+assert.sameValue(returnValue, 2, 'string');
+
+returnValue = date.setTime();
+
+assert.sameValue(returnValue, NaN, 'undefined');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setTime/browser.js b/js/src/tests/test262/built-ins/Date/prototype/setTime/browser.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setTime/browser.js
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setTime/name.js b/js/src/tests/test262/built-ins/Date/prototype/setTime/name.js
new file mode 100644
index 0000000000..b978b93ad5
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setTime/name.js
@@ -0,0 +1,28 @@
+// Copyright (C) 2015 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.prototype.settime
+description: >
+  Date.prototype.setTime.name is "setTime".
+info: |
+  Date.prototype.setTime ( time )
+
+  17 ECMAScript Standard Built-in Objects:
+    Every built-in Function object, including constructors, that is not
+    identified as an anonymous function has a name property whose value
+    is a String.
+
+    Unless otherwise specified, the name property of a built-in Function
+    object, if it exists, has the attributes { [[Writable]]: false,
+    [[Enumerable]]: false, [[Configurable]]: true }.
+includes: [propertyHelper.js]
+---*/
+
+assert.sameValue(Date.prototype.setTime.name, "setTime");
+
+verifyNotEnumerable(Date.prototype.setTime, "name");
+verifyNotWritable(Date.prototype.setTime, "name");
+verifyConfigurable(Date.prototype.setTime, "name");
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setTime/new-value-time-clip.js b/js/src/tests/test262/built-ins/Date/prototype/setTime/new-value-time-clip.js
new file mode 100644
index 0000000000..8912795503
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setTime/new-value-time-clip.js
@@ -0,0 +1,29 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.settime
+description: Behavior when new value exceeds [[DateValue]] limits
+info: |
+  1. Perform ? thisTimeValue(this value).
+  2. Let t be ? ToNumber(time).
+  3. Let v be TimeClip(t).
+  4. Set the [[DateValue]] internal slot of this Date object to v.
+  5. Return v.
+
+  TimeClip (time)
+
+  1. If time is not finite, return NaN.
+  2. If abs(time) > 8.64 × 1015, return NaN.
+---*/
+
+var maxMs = 8.64e15;
+var date = new Date();
+var returnValue;
+
+assert.notSameValue(date.getTime(), NaN);
+
+returnValue = date.setTime(maxMs + 1);
+
+assert.sameValue(returnValue, NaN);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setTime/not-a-constructor.js b/js/src/tests/test262/built-ins/Date/prototype/setTime/not-a-constructor.js
new file mode 100644
index 0000000000..5bd2d83907
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setTime/not-a-constructor.js
@@ -0,0 +1,35 @@
+// Copyright (C) 2020 Rick Waldron. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-ecmascript-standard-built-in-objects
+description: >
+  Date.prototype.setTime does not implement [[Construct]], is not new-able
+info: |
+  ECMAScript Function Objects
+
+  Built-in function objects that are not identified as constructors do not
+  implement the [[Construct]] internal method unless otherwise specified in
+  the description of a particular function.
+
+  sec-evaluatenew
+
+  ...
+  7. If IsConstructor(constructor) is false, throw a TypeError exception.
+  ...
+includes: [isConstructor.js]
+features: [Reflect.construct, arrow-function]
+---*/
+
+assert.sameValue(
+  isConstructor(Date.prototype.setTime),
+  false,
+  'isConstructor(Date.prototype.setTime) must return false'
+);
+
+assert.throws(TypeError, () => {
+  let date = new Date(Date.now()); new date.setTime();
+}, '`let date = new Date(Date.now()); new date.setTime()` throws TypeError');
+
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setTime/shell.js b/js/src/tests/test262/built-ins/Date/prototype/setTime/shell.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setTime/shell.js
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setTime/this-value-invalid-date.js b/js/src/tests/test262/built-ins/Date/prototype/setTime/this-value-invalid-date.js
new file mode 100644
index 0000000000..d575d58231
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setTime/this-value-invalid-date.js
@@ -0,0 +1,23 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.settime
+description: >
+  Behavior when the "this" value is a Date object describing an invald date
+info: |
+  1. Perform ? thisTimeValue(this value).
+  2. Let t be ? ToNumber(time).
+  3. Let v be TimeClip(t).
+  4. Set the [[DateValue]] internal slot of this Date object to v.
+  5. Return v.
+---*/
+
+var date = new Date(NaN);
+var result;
+
+result = date.setTime(0);
+
+assert.sameValue(result, 0, 'return value');
+assert.sameValue(date.getTime(), 0, '[[DateValue]] internal slot');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setTime/this-value-non-date.js b/js/src/tests/test262/built-ins/Date/prototype/setTime/this-value-non-date.js
new file mode 100644
index 0000000000..6ecff8e82c
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setTime/this-value-non-date.js
@@ -0,0 +1,45 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.settime
+description: >
+  Behavior when "this" value is an Object without a [[DateValue]] internal slot
+info: |
+  1. Let t be LocalTime(? thisTimeValue(this value)).
+
+  The abstract operation thisTimeValue(value) performs the following steps:
+
+  1. If Type(value) is Object and value has a [[DateValue]] internal slot, then
+     a. Return value.[[DateValue]].
+  2. Throw a TypeError exception.
+---*/
+
+var setTime = Date.prototype.setTime;
+var callCount = 0;
+var arg = {
+  valueOf: function() {
+    callCount += 1;
+    return 1;
+  }
+};
+var args = (function() {
+  return arguments;
+}());
+
+assert.sameValue(typeof setTime, 'function');
+
+assert.throws(TypeError, function() {
+  setTime.call({}, arg);
+}, 'ordinary object');
+
+assert.throws(TypeError, function() {
+  setTime.call([], arg);
+}, 'array exotic object');
+
+assert.throws(TypeError, function() {
+  setTime.call(args, arg);
+}, 'arguments exotic object');
+
+assert.sameValue(callCount, 0, 'validation precedes input coercion');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setTime/this-value-non-object.js b/js/src/tests/test262/built-ins/Date/prototype/setTime/this-value-non-object.js
new file mode 100644
index 0000000000..c9eb97e3b0
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setTime/this-value-non-object.js
@@ -0,0 +1,55 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.settime
+description: Behavior when "this" value is not an Object
+info: |
+  1. Let t be LocalTime(? thisTimeValue(this value)).
+
+  The abstract operation thisTimeValue(value) performs the following steps:
+
+  1. If Type(value) is Object and value has a [[DateValue]] internal slot, then
+     a. Return value.[[DateValue]].
+  2. Throw a TypeError exception.
+features: [Symbol]
+---*/
+
+var setTime = Date.prototype.setTime;
+var callCount = 0;
+var arg = {
+  valueOf: function() {
+    callCount += 1;
+    return 1;
+  }
+};
+var symbol = Symbol();
+
+assert.sameValue(typeof setTime, 'function');
+
+assert.throws(TypeError, function() {
+  setTime.call(0, arg);
+}, 'number');
+
+assert.throws(TypeError, function() {
+  setTime.call(true, arg);
+}, 'boolean');
+
+assert.throws(TypeError, function() {
+  setTime.call(null, arg);
+}, 'null');
+
+assert.throws(TypeError, function() {
+  setTime.call(undefined, arg);
+}, 'undefined');
+
+assert.throws(TypeError, function() {
+  setTime.call('', arg);
+}, 'string');
+
+assert.throws(TypeError, function() {
+  setTime.call(symbol, arg);
+}, 'symbol');
+
+assert.sameValue(callCount, 0, 'validation precedes input coercion');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setTime/this-value-valid-date.js b/js/src/tests/test262/built-ins/Date/prototype/setTime/this-value-valid-date.js
new file mode 100644
index 0000000000..e2cad61b51
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setTime/this-value-valid-date.js
@@ -0,0 +1,28 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.settime
+description: Return value for valid dates
+info: |
+  1. Let t be LocalTime(? thisTimeValue(this value)).
+  2. Let dt be ? ToNumber(date).
+  3. Let newDate be MakeDate(MakeDay(YearFromTime(t), MonthFromTime(t), dt),
+     TimeWithinDay(t)).
+  4. Let u be TimeClip(UTC(newDate)).
+  5. Set the [[DateValue]] internal slot of this Date object to u.
+  6. Return u.
+---*/
+
+var date = new Date(2016, 6);
+var returnValue;
+
+returnValue = date.setTime(6);
+
+assert.sameValue(
+  returnValue, 6, 'within unit boundary (return value)'
+);
+assert.sameValue(
+  date.getTime(), 6, 'within unit boundary ([[DateValue]] slot)'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setUTCDate/S15.9.5.37_A1_T1.js b/js/src/tests/test262/built-ins/Date/prototype/setUTCDate/S15.9.5.37_A1_T1.js
new file mode 100644
index 0000000000..0ea8716125
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setUTCDate/S15.9.5.37_A1_T1.js
@@ -0,0 +1,25 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype property "setUTCDate" has { DontEnum } attributes
+esid: sec-date.prototype.setutcdate
+description: Checking absence of ReadOnly attribute
+---*/
+
+var x = Date.prototype.setUTCDate;
+if (x === 1) {
+  Date.prototype.setUTCDate = 2;
+} else {
+  Date.prototype.setUTCDate = 1;
+}
+
+assert.notSameValue(
+  Date.prototype.setUTCDate,
+  x,
+  'The value of Date.prototype.setUTCDate is expected to not equal the value of `x`'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setUTCDate/S15.9.5.37_A1_T2.js b/js/src/tests/test262/built-ins/Date/prototype/setUTCDate/S15.9.5.37_A1_T2.js
new file mode 100644
index 0000000000..84187b61d6
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setUTCDate/S15.9.5.37_A1_T2.js
@@ -0,0 +1,22 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype property "setUTCDate" has { DontEnum } attributes
+esid: sec-date.prototype.setutcdate
+description: Checking absence of DontDelete attribute
+---*/
+assert.notSameValue(
+  delete Date.prototype.setUTCDate,
+  false,
+  'The value of delete Date.prototype.setUTCDate is not false'
+);
+
+assert(
+  !Date.prototype.hasOwnProperty('setUTCDate'),
+  'The value of !Date.prototype.hasOwnProperty(\'setUTCDate\') is expected to be true'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setUTCDate/S15.9.5.37_A1_T3.js b/js/src/tests/test262/built-ins/Date/prototype/setUTCDate/S15.9.5.37_A1_T3.js
new file mode 100644
index 0000000000..e2085634a8
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setUTCDate/S15.9.5.37_A1_T3.js
@@ -0,0 +1,20 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype property "setUTCDate" has { DontEnum } attributes
+esid: sec-date.prototype.setutcdate
+description: Checking DontEnum attribute
+---*/
+assert(
+  !Date.prototype.propertyIsEnumerable('setUTCDate'),
+  'The value of !Date.prototype.propertyIsEnumerable(\'setUTCDate\') is expected to be true'
+);
+
+for (var x in Date.prototype) {
+  assert.notSameValue(x, "setUTCDate", 'The value of x is not "setUTCDate"');
+}
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setUTCDate/S15.9.5.37_A2_T1.js b/js/src/tests/test262/built-ins/Date/prototype/setUTCDate/S15.9.5.37_A2_T1.js
new file mode 100644
index 0000000000..0d7c6f5d11
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setUTCDate/S15.9.5.37_A2_T1.js
@@ -0,0 +1,21 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The "length" property of the "setUTCDate" is 1
+esid: sec-date.prototype.setutcdate
+description: The "length" property of the "setUTCDate" is 1
+---*/
+assert.sameValue(
+  Date.prototype.setUTCDate.hasOwnProperty("length"),
+  true,
+  'Date.prototype.setUTCDate.hasOwnProperty("length") must return true'
+);
+
+assert.sameValue(
+  Date.prototype.setUTCDate.length,
+  1,
+  'The value of Date.prototype.setUTCDate.length is expected to be 1'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setUTCDate/S15.9.5.37_A3_T1.js b/js/src/tests/test262/built-ins/Date/prototype/setUTCDate/S15.9.5.37_A3_T1.js
new file mode 100644
index 0000000000..4ec596966b
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setUTCDate/S15.9.5.37_A3_T1.js
@@ -0,0 +1,24 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype.setUTCDate property "length" has { ReadOnly,
+    DontDelete, DontEnum } attributes
+esid: sec-date.prototype.setutcdate
+description: Checking ReadOnly attribute
+includes: [propertyHelper.js]
+---*/
+
+var x = Date.prototype.setUTCDate.length;
+verifyNotWritable(Date.prototype.setUTCDate, "length", null, 1);
+
+assert.sameValue(
+  Date.prototype.setUTCDate.length,
+  x,
+  'The value of Date.prototype.setUTCDate.length is expected to equal the value of x'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setUTCDate/S15.9.5.37_A3_T2.js b/js/src/tests/test262/built-ins/Date/prototype/setUTCDate/S15.9.5.37_A3_T2.js
new file mode 100644
index 0000000000..c171c07dc9
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setUTCDate/S15.9.5.37_A3_T2.js
@@ -0,0 +1,24 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype.setUTCDate property "length" has { ReadOnly, !
+    DontDelete, DontEnum } attributes
+esid: sec-date.prototype.setutcdate
+description: Checking DontDelete attribute
+---*/
+assert.sameValue(
+  delete Date.prototype.setUTCDate.length,
+  true,
+  'The value of `delete Date.prototype.setUTCDate.length` is expected to be true'
+);
+
+assert(
+  !Date.prototype.setUTCDate.hasOwnProperty('length'),
+  'The value of !Date.prototype.setUTCDate.hasOwnProperty(\'length\') is expected to be true'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setUTCDate/S15.9.5.37_A3_T3.js b/js/src/tests/test262/built-ins/Date/prototype/setUTCDate/S15.9.5.37_A3_T3.js
new file mode 100644
index 0000000000..9e4fd50ded
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setUTCDate/S15.9.5.37_A3_T3.js
@@ -0,0 +1,22 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype.setUTCDate property "length" has { ReadOnly,
+    DontDelete, DontEnum } attributes
+esid: sec-date.prototype.setutcdate
+description: Checking DontEnum attribute
+---*/
+assert(
+  !Date.prototype.setUTCDate.propertyIsEnumerable('length'),
+  'The value of !Date.prototype.setUTCDate.propertyIsEnumerable(\'length\') is expected to be true'
+);
+
+for (var x in Date.prototype.setUTCDate) {
+  assert.notSameValue(x, "length", 'The value of x is not "length"');
+}
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setUTCDate/arg-coercion-order.js b/js/src/tests/test262/built-ins/Date/prototype/setUTCDate/arg-coercion-order.js
new file mode 100644
index 0000000000..c00dcdd04c
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setUTCDate/arg-coercion-order.js
@@ -0,0 +1,31 @@
+// Copyright (C) 2021 Kevin Gibbons. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.setutcdate
+description: Order of coercion of provided argument vs NaN check
+info: |
+  1. Let t be ? thisTimeValue(this value).
+  2. Let dt be ? ToNumber(date).
+  3. If t is NaN, return NaN.
+  4. Let newDate be MakeDate(MakeDay(YearFromTime(t), MonthFromTime(t), dt), TimeWithinDay(t)).
+  5. Let v be TimeClip(newDate).
+  6. Set the [[DateValue]] internal slot of this Date object to v.
+  7. Return v.
+---*/
+
+var date = new Date(NaN);
+var callCount = 0;
+var arg = {
+  valueOf: function() {
+    callCount += 1;
+    return 0;
+  }
+};
+
+var returnValue = date.setUTCDate(arg);
+
+assert.sameValue(callCount, 1, 'ToNumber invoked exactly once');
+assert.sameValue(returnValue, NaN, 'argument is ignored when `this` is an invalid date');
+assert.sameValue(date.getTime(), NaN, 'argument is ignored when `this` is an invalid date');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setUTCDate/browser.js b/js/src/tests/test262/built-ins/Date/prototype/setUTCDate/browser.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setUTCDate/browser.js
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setUTCDate/name.js b/js/src/tests/test262/built-ins/Date/prototype/setUTCDate/name.js
new file mode 100644
index 0000000000..4608a57892
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setUTCDate/name.js
@@ -0,0 +1,28 @@
+// Copyright (C) 2015 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.prototype.setutcdate
+description: >
+  Date.prototype.setUTCDate.name is "setUTCDate".
+info: |
+  Date.prototype.setUTCDate ( date )
+
+  17 ECMAScript Standard Built-in Objects:
+    Every built-in Function object, including constructors, that is not
+    identified as an anonymous function has a name property whose value
+    is a String.
+
+    Unless otherwise specified, the name property of a built-in Function
+    object, if it exists, has the attributes { [[Writable]]: false,
+    [[Enumerable]]: false, [[Configurable]]: true }.
+includes: [propertyHelper.js]
+---*/
+
+assert.sameValue(Date.prototype.setUTCDate.name, "setUTCDate");
+
+verifyNotEnumerable(Date.prototype.setUTCDate, "name");
+verifyNotWritable(Date.prototype.setUTCDate, "name");
+verifyConfigurable(Date.prototype.setUTCDate, "name");
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setUTCDate/not-a-constructor.js b/js/src/tests/test262/built-ins/Date/prototype/setUTCDate/not-a-constructor.js
new file mode 100644
index 0000000000..eb0e04f08c
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setUTCDate/not-a-constructor.js
@@ -0,0 +1,35 @@
+// Copyright (C) 2020 Rick Waldron. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-ecmascript-standard-built-in-objects
+description: >
+  Date.prototype.setUTCDate does not implement [[Construct]], is not new-able
+info: |
+  ECMAScript Function Objects
+
+  Built-in function objects that are not identified as constructors do not
+  implement the [[Construct]] internal method unless otherwise specified in
+  the description of a particular function.
+
+  sec-evaluatenew
+
+  ...
+  7. If IsConstructor(constructor) is false, throw a TypeError exception.
+  ...
+includes: [isConstructor.js]
+features: [Reflect.construct, arrow-function]
+---*/
+
+assert.sameValue(
+  isConstructor(Date.prototype.setUTCDate),
+  false,
+  'isConstructor(Date.prototype.setUTCDate) must return false'
+);
+
+assert.throws(TypeError, () => {
+  let date = new Date(Date.now()); new date.setUTCDate();
+}, '`let date = new Date(Date.now()); new date.setUTCDate()` throws TypeError');
+
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setUTCDate/shell.js b/js/src/tests/test262/built-ins/Date/prototype/setUTCDate/shell.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setUTCDate/shell.js
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setUTCFullYear/S15.9.5.41_A1_T1.js b/js/src/tests/test262/built-ins/Date/prototype/setUTCFullYear/S15.9.5.41_A1_T1.js
new file mode 100644
index 0000000000..4bb9f2c245
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setUTCFullYear/S15.9.5.41_A1_T1.js
@@ -0,0 +1,25 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype property "setUTCFullYear" has { DontEnum } attributes
+esid: sec-date.prototype.setutcfullyear
+description: Checking absence of ReadOnly attribute
+---*/
+
+var x = Date.prototype.setUTCFullYear;
+if (x === 1) {
+  Date.prototype.setUTCFullYear = 2;
+} else {
+  Date.prototype.setUTCFullYear = 1;
+}
+
+assert.notSameValue(
+  Date.prototype.setUTCFullYear,
+  x,
+  'The value of Date.prototype.setUTCFullYear is expected to not equal the value of `x`'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setUTCFullYear/S15.9.5.41_A1_T2.js b/js/src/tests/test262/built-ins/Date/prototype/setUTCFullYear/S15.9.5.41_A1_T2.js
new file mode 100644
index 0000000000..1161ba431c
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setUTCFullYear/S15.9.5.41_A1_T2.js
@@ -0,0 +1,22 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype property "setUTCFullYear" has { DontEnum } attributes
+esid: sec-date.prototype.setutcfullyear
+description: Checking absence of DontDelete attribute
+---*/
+assert.notSameValue(
+  delete Date.prototype.setUTCFullYear,
+  false,
+  'The value of delete Date.prototype.setUTCFullYear is not false'
+);
+
+assert(
+  !Date.prototype.hasOwnProperty('setUTCFullYear'),
+  'The value of !Date.prototype.hasOwnProperty(\'setUTCFullYear\') is expected to be true'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setUTCFullYear/S15.9.5.41_A1_T3.js b/js/src/tests/test262/built-ins/Date/prototype/setUTCFullYear/S15.9.5.41_A1_T3.js
new file mode 100644
index 0000000000..7362027367
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setUTCFullYear/S15.9.5.41_A1_T3.js
@@ -0,0 +1,20 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype property "setUTCFullYear" has { DontEnum } attributes
+esid: sec-date.prototype.setutcfullyear
+description: Checking DontEnum attribute
+---*/
+assert(
+  !Date.prototype.propertyIsEnumerable('setUTCFullYear'),
+  'The value of !Date.prototype.propertyIsEnumerable(\'setUTCFullYear\') is expected to be true'
+);
+
+for (var x in Date.prototype) {
+  assert.notSameValue(x, "setUTCFullYear", 'The value of x is not "setUTCFullYear"');
+}
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setUTCFullYear/S15.9.5.41_A2_T1.js b/js/src/tests/test262/built-ins/Date/prototype/setUTCFullYear/S15.9.5.41_A2_T1.js
new file mode 100644
index 0000000000..408605fcb2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setUTCFullYear/S15.9.5.41_A2_T1.js
@@ -0,0 +1,21 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The "length" property of the "setUTCFullYear" is 3
+esid: sec-date.prototype.setutcfullyear
+description: The "length" property of the "setUTCFullYear" is 3
+---*/
+assert.sameValue(
+  Date.prototype.setUTCFullYear.hasOwnProperty("length"),
+  true,
+  'Date.prototype.setUTCFullYear.hasOwnProperty("length") must return true'
+);
+
+assert.sameValue(
+  Date.prototype.setUTCFullYear.length,
+  3,
+  'The value of Date.prototype.setUTCFullYear.length is expected to be 3'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setUTCFullYear/S15.9.5.41_A3_T1.js b/js/src/tests/test262/built-ins/Date/prototype/setUTCFullYear/S15.9.5.41_A3_T1.js
new file mode 100644
index 0000000000..7015cef362
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setUTCFullYear/S15.9.5.41_A3_T1.js
@@ -0,0 +1,24 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype.setUTCFullYear property "length" has { ReadOnly,
+    DontDelete, DontEnum } attributes
+esid: sec-date.prototype.setutcfullyear
+description: Checking ReadOnly attribute
+includes: [propertyHelper.js]
+---*/
+
+var x = Date.prototype.setUTCFullYear.length;
+verifyNotWritable(Date.prototype.setUTCFullYear, "length", null, 1);
+
+assert.sameValue(
+  Date.prototype.setUTCFullYear.length,
+  x,
+  'The value of Date.prototype.setUTCFullYear.length is expected to equal the value of x'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setUTCFullYear/S15.9.5.41_A3_T2.js b/js/src/tests/test262/built-ins/Date/prototype/setUTCFullYear/S15.9.5.41_A3_T2.js
new file mode 100644
index 0000000000..1076c90b23
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setUTCFullYear/S15.9.5.41_A3_T2.js
@@ -0,0 +1,24 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype.setUTCFullYear property "length" has { ReadOnly, !
+    DontDelete, DontEnum } attributes
+esid: sec-date.prototype.setutcfullyear
+description: Checking DontDelete attribute
+---*/
+assert.sameValue(
+  delete Date.prototype.setUTCFullYear.length,
+  true,
+  'The value of `delete Date.prototype.setUTCFullYear.length` is expected to be true'
+);
+
+assert(
+  !Date.prototype.setUTCFullYear.hasOwnProperty('length'),
+  'The value of !Date.prototype.setUTCFullYear.hasOwnProperty(\'length\') is expected to be true'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setUTCFullYear/S15.9.5.41_A3_T3.js b/js/src/tests/test262/built-ins/Date/prototype/setUTCFullYear/S15.9.5.41_A3_T3.js
new file mode 100644
index 0000000000..ece7db26db
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setUTCFullYear/S15.9.5.41_A3_T3.js
@@ -0,0 +1,22 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype.setUTCFullYear property "length" has { ReadOnly,
+    DontDelete, DontEnum } attributes
+esid: sec-date.prototype.setutcfullyear
+description: Checking DontEnum attribute
+---*/
+assert(
+  !Date.prototype.setUTCFullYear.propertyIsEnumerable('length'),
+  'The value of !Date.prototype.setUTCFullYear.propertyIsEnumerable(\'length\') is expected to be true'
+);
+
+for (var x in Date.prototype.setUTCFullYear) {
+  assert.notSameValue(x, "length", 'The value of x is not "length"');
+}
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setUTCFullYear/browser.js b/js/src/tests/test262/built-ins/Date/prototype/setUTCFullYear/browser.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setUTCFullYear/browser.js
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setUTCFullYear/name.js b/js/src/tests/test262/built-ins/Date/prototype/setUTCFullYear/name.js
new file mode 100644
index 0000000000..3f0c1ce4ed
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setUTCFullYear/name.js
@@ -0,0 +1,28 @@
+// Copyright (C) 2015 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.prototype.setutcfullyear
+description: >
+  Date.prototype.setUTCFullYear.name is "setUTCFullYear".
+info: |
+  Date.prototype.setUTCFullYear ( year [ , month [ , date ] ] )
+
+  17 ECMAScript Standard Built-in Objects:
+    Every built-in Function object, including constructors, that is not
+    identified as an anonymous function has a name property whose value
+    is a String.
+
+    Unless otherwise specified, the name property of a built-in Function
+    object, if it exists, has the attributes { [[Writable]]: false,
+    [[Enumerable]]: false, [[Configurable]]: true }.
+includes: [propertyHelper.js]
+---*/
+
+assert.sameValue(Date.prototype.setUTCFullYear.name, "setUTCFullYear");
+
+verifyNotEnumerable(Date.prototype.setUTCFullYear, "name");
+verifyNotWritable(Date.prototype.setUTCFullYear, "name");
+verifyConfigurable(Date.prototype.setUTCFullYear, "name");
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setUTCFullYear/not-a-constructor.js b/js/src/tests/test262/built-ins/Date/prototype/setUTCFullYear/not-a-constructor.js
new file mode 100644
index 0000000000..06d291aa71
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setUTCFullYear/not-a-constructor.js
@@ -0,0 +1,35 @@
+// Copyright (C) 2020 Rick Waldron. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-ecmascript-standard-built-in-objects
+description: >
+  Date.prototype.setUTCFullYear does not implement [[Construct]], is not new-able
+info: |
+  ECMAScript Function Objects
+
+  Built-in function objects that are not identified as constructors do not
+  implement the [[Construct]] internal method unless otherwise specified in
+  the description of a particular function.
+
+  sec-evaluatenew
+
+  ...
+  7. If IsConstructor(constructor) is false, throw a TypeError exception.
+  ...
+includes: [isConstructor.js]
+features: [Reflect.construct, arrow-function]
+---*/
+
+assert.sameValue(
+  isConstructor(Date.prototype.setUTCFullYear),
+  false,
+  'isConstructor(Date.prototype.setUTCFullYear) must return false'
+);
+
+assert.throws(TypeError, () => {
+  let date = new Date(Date.now()); new date.setUTCFullYear();
+}, '`let date = new Date(Date.now()); new date.setUTCFullYear()` throws TypeError');
+
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setUTCFullYear/shell.js b/js/src/tests/test262/built-ins/Date/prototype/setUTCFullYear/shell.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setUTCFullYear/shell.js
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setUTCHours/S15.9.5.35_A1_T1.js b/js/src/tests/test262/built-ins/Date/prototype/setUTCHours/S15.9.5.35_A1_T1.js
new file mode 100644
index 0000000000..5bf8bdcc9b
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setUTCHours/S15.9.5.35_A1_T1.js
@@ -0,0 +1,25 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype property "setUTCHours" has { DontEnum } attributes
+esid: sec-date.prototype.setutchours
+description: Checking absence of ReadOnly attribute
+---*/
+
+var x = Date.prototype.setUTCHours;
+if (x === 1) {
+  Date.prototype.setUTCHours = 2;
+} else {
+  Date.prototype.setUTCHours = 1;
+}
+
+assert.notSameValue(
+  Date.prototype.setUTCHours,
+  x,
+  'The value of Date.prototype.setUTCHours is expected to not equal the value of `x`'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setUTCHours/S15.9.5.35_A1_T2.js b/js/src/tests/test262/built-ins/Date/prototype/setUTCHours/S15.9.5.35_A1_T2.js
new file mode 100644
index 0000000000..487feb072a
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setUTCHours/S15.9.5.35_A1_T2.js
@@ -0,0 +1,22 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype property "setUTCHours" has { DontEnum } attributes
+esid: sec-date.prototype.setutchours
+description: Checking absence of DontDelete attribute
+---*/
+assert.notSameValue(
+  delete Date.prototype.setUTCHours,
+  false,
+  'The value of delete Date.prototype.setUTCHours is not false'
+);
+
+assert(
+  !Date.prototype.hasOwnProperty('setUTCHours'),
+  'The value of !Date.prototype.hasOwnProperty(\'setUTCHours\') is expected to be true'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setUTCHours/S15.9.5.35_A1_T3.js b/js/src/tests/test262/built-ins/Date/prototype/setUTCHours/S15.9.5.35_A1_T3.js
new file mode 100644
index 0000000000..7be2011f65
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setUTCHours/S15.9.5.35_A1_T3.js
@@ -0,0 +1,20 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype property "setUTCHours" has { DontEnum } attributes
+esid: sec-date.prototype.setutchours
+description: Checking DontEnum attribute
+---*/
+assert(
+  !Date.prototype.propertyIsEnumerable('setUTCHours'),
+  'The value of !Date.prototype.propertyIsEnumerable(\'setUTCHours\') is expected to be true'
+);
+
+for (var x in Date.prototype) {
+  assert.notSameValue(x, "setUTCHours", 'The value of x is not "setUTCHours"');
+}
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setUTCHours/S15.9.5.35_A2_T1.js b/js/src/tests/test262/built-ins/Date/prototype/setUTCHours/S15.9.5.35_A2_T1.js
new file mode 100644
index 0000000000..ce429ce09e
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setUTCHours/S15.9.5.35_A2_T1.js
@@ -0,0 +1,21 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The "length" property of the "setUTCHours" is 4
+esid: sec-date.prototype.setutchours
+description: The "length" property of the "setUTCHours" is 4
+---*/
+assert.sameValue(
+  Date.prototype.setUTCHours.hasOwnProperty("length"),
+  true,
+  'Date.prototype.setUTCHours.hasOwnProperty("length") must return true'
+);
+
+assert.sameValue(
+  Date.prototype.setUTCHours.length,
+  4,
+  'The value of Date.prototype.setUTCHours.length is expected to be 4'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setUTCHours/S15.9.5.35_A3_T1.js b/js/src/tests/test262/built-ins/Date/prototype/setUTCHours/S15.9.5.35_A3_T1.js
new file mode 100644
index 0000000000..da911c82b7
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setUTCHours/S15.9.5.35_A3_T1.js
@@ -0,0 +1,24 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype.setUTCHours property "length" has { ReadOnly,
+    DontDelete, DontEnum } attributes
+esid: sec-date.prototype.setutchours
+description: Checking ReadOnly attribute
+includes: [propertyHelper.js]
+---*/
+
+var x = Date.prototype.setUTCHours.length;
+verifyNotWritable(Date.prototype.setUTCHours, "length", null, 1);
+
+assert.sameValue(
+  Date.prototype.setUTCHours.length,
+  x,
+  'The value of Date.prototype.setUTCHours.length is expected to equal the value of x'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setUTCHours/S15.9.5.35_A3_T2.js b/js/src/tests/test262/built-ins/Date/prototype/setUTCHours/S15.9.5.35_A3_T2.js
new file mode 100644
index 0000000000..cad8d4c37a
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setUTCHours/S15.9.5.35_A3_T2.js
@@ -0,0 +1,24 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype.setUTCHours property "length" has { ReadOnly, !
+    DontDelete, DontEnum } attributes
+esid: sec-date.prototype.setutchours
+description: Checking DontDelete attribute
+---*/
+assert.sameValue(
+  delete Date.prototype.setUTCHours.length,
+  true,
+  'The value of `delete Date.prototype.setUTCHours.length` is expected to be true'
+);
+
+assert(
+  !Date.prototype.setUTCHours.hasOwnProperty('length'),
+  'The value of !Date.prototype.setUTCHours.hasOwnProperty(\'length\') is expected to be true'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setUTCHours/S15.9.5.35_A3_T3.js b/js/src/tests/test262/built-ins/Date/prototype/setUTCHours/S15.9.5.35_A3_T3.js
new file mode 100644
index 0000000000..d196adad9d
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setUTCHours/S15.9.5.35_A3_T3.js
@@ -0,0 +1,22 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype.setUTCHours property "length" has { ReadOnly,
+    DontDelete, DontEnum } attributes
+esid: sec-date.prototype.setutchours
+description: Checking DontEnum attribute
+---*/
+assert(
+  !Date.prototype.setUTCHours.propertyIsEnumerable('length'),
+  'The value of !Date.prototype.setUTCHours.propertyIsEnumerable(\'length\') is expected to be true'
+);
+
+for (var x in Date.prototype.setUTCHours) {
+  assert.notSameValue(x, "length", 'The value of x is not "length"');
+}
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setUTCHours/arg-coercion-order.js b/js/src/tests/test262/built-ins/Date/prototype/setUTCHours/arg-coercion-order.js
new file mode 100644
index 0000000000..bbb850e7cf
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setUTCHours/arg-coercion-order.js
@@ -0,0 +1,58 @@
+// Copyright (C) 2021 Kevin Gibbons. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.setutchours
+description: Order of coercion of provided arguments vs NaN check
+info: |
+  1. Let t be ? thisTimeValue(this value).
+  2. Let h be ? ToNumber(hour).
+  3. If min is present, let m be ? ToNumber(min).
+  4. If sec is present, let s be ? ToNumber(sec).
+  5. If ms is present, let milli be ? ToNumber(ms).
+  6. If t is NaN, return NaN.
+  7. If min is not present, let m be MinFromTime(t).
+  8. If sec is not present, let s be SecFromTime(t).
+  9. If ms is not present, let milli be msFromTime(t).
+  10. Let date be MakeDate(Day(t), MakeTime(h, m, s, milli)).
+  11. Let v be TimeClip(date).
+  12. Set the [[DateValue]] internal slot of this Date object to v.
+  13. Return v.
+includes: [compareArray.js]
+---*/
+
+var date = new Date(NaN);
+var effects = [];
+var argHour = {
+  valueOf: function() {
+    effects.push('valueOf hour');
+    return 0;
+  }
+};
+var argMin = {
+  valueOf: function() {
+    effects.push('valueOf min');
+    return 0;
+  }
+};
+var argSec = {
+  valueOf: function() {
+    effects.push('valueOf sec');
+    return 0;
+  }
+};
+var argMs = {
+  valueOf: function() {
+    effects.push('valueOf ms');
+    return 0;
+  }
+};
+
+var returnValue = date.setUTCHours(argHour, argMin, argSec, argMs);
+
+var expectedEffects = ['valueOf hour', 'valueOf min', 'valueOf sec', 'valueOf ms'];
+
+assert.compareArray(effects, expectedEffects);
+assert.sameValue(returnValue, NaN, 'argument is ignored when `this` is an invalid date');
+assert.sameValue(date.getTime(), NaN, 'argument is ignored when `this` is an invalid date');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setUTCHours/browser.js b/js/src/tests/test262/built-ins/Date/prototype/setUTCHours/browser.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setUTCHours/browser.js
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setUTCHours/name.js b/js/src/tests/test262/built-ins/Date/prototype/setUTCHours/name.js
new file mode 100644
index 0000000000..8335871c2c
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setUTCHours/name.js
@@ -0,0 +1,28 @@
+// Copyright (C) 2015 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.prototype.setutchours
+description: >
+  Date.prototype.setUTCHours.name is "setUTCHours".
+info: |
+  Date.prototype.setUTCHours ( hour [ , min [ , sec [ , ms ] ] ] )
+
+  17 ECMAScript Standard Built-in Objects:
+    Every built-in Function object, including constructors, that is not
+    identified as an anonymous function has a name property whose value
+    is a String.
+
+    Unless otherwise specified, the name property of a built-in Function
+    object, if it exists, has the attributes { [[Writable]]: false,
+    [[Enumerable]]: false, [[Configurable]]: true }.
+includes: [propertyHelper.js]
+---*/
+
+assert.sameValue(Date.prototype.setUTCHours.name, "setUTCHours");
+
+verifyNotEnumerable(Date.prototype.setUTCHours, "name");
+verifyNotWritable(Date.prototype.setUTCHours, "name");
+verifyConfigurable(Date.prototype.setUTCHours, "name");
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setUTCHours/not-a-constructor.js b/js/src/tests/test262/built-ins/Date/prototype/setUTCHours/not-a-constructor.js
new file mode 100644
index 0000000000..a572e32b52
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setUTCHours/not-a-constructor.js
@@ -0,0 +1,35 @@
+// Copyright (C) 2020 Rick Waldron. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-ecmascript-standard-built-in-objects
+description: >
+  Date.prototype.setUTCHours does not implement [[Construct]], is not new-able
+info: |
+  ECMAScript Function Objects
+
+  Built-in function objects that are not identified as constructors do not
+  implement the [[Construct]] internal method unless otherwise specified in
+  the description of a particular function.
+
+  sec-evaluatenew
+
+  ...
+  7. If IsConstructor(constructor) is false, throw a TypeError exception.
+  ...
+includes: [isConstructor.js]
+features: [Reflect.construct, arrow-function]
+---*/
+
+assert.sameValue(
+  isConstructor(Date.prototype.setUTCHours),
+  false,
+  'isConstructor(Date.prototype.setUTCHours) must return false'
+);
+
+assert.throws(TypeError, () => {
+  let date = new Date(Date.now()); new date.setUTCHours();
+}, '`let date = new Date(Date.now()); new date.setUTCHours()` throws TypeError');
+
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setUTCHours/shell.js b/js/src/tests/test262/built-ins/Date/prototype/setUTCHours/shell.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setUTCHours/shell.js
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setUTCMilliseconds/S15.9.5.29_A1_T1.js b/js/src/tests/test262/built-ins/Date/prototype/setUTCMilliseconds/S15.9.5.29_A1_T1.js
new file mode 100644
index 0000000000..a3770024c8
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setUTCMilliseconds/S15.9.5.29_A1_T1.js
@@ -0,0 +1,27 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype property "setUTCMilliseconds" has { DontEnum }
+    attributes
+esid: sec-date.prototype.setutcmilliseconds
+description: Checking absence of ReadOnly attribute
+---*/
+
+var x = Date.prototype.setUTCMilliseconds;
+if (x === 1) {
+  Date.prototype.setUTCMilliseconds = 2;
+} else {
+  Date.prototype.setUTCMilliseconds = 1;
+}
+
+assert.notSameValue(
+  Date.prototype.setUTCMilliseconds,
+  x,
+  'The value of Date.prototype.setUTCMilliseconds is expected to not equal the value of `x`'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setUTCMilliseconds/S15.9.5.29_A1_T2.js b/js/src/tests/test262/built-ins/Date/prototype/setUTCMilliseconds/S15.9.5.29_A1_T2.js
new file mode 100644
index 0000000000..a539610d4a
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setUTCMilliseconds/S15.9.5.29_A1_T2.js
@@ -0,0 +1,24 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype property "setUTCMilliseconds" has { DontEnum }
+    attributes
+esid: sec-date.prototype.setutcmilliseconds
+description: Checking absence of DontDelete attribute
+---*/
+assert.notSameValue(
+  delete Date.prototype.setUTCMilliseconds,
+  false,
+  'The value of delete Date.prototype.setUTCMilliseconds is not false'
+);
+
+assert(
+  !Date.prototype.hasOwnProperty('setUTCMilliseconds'),
+  'The value of !Date.prototype.hasOwnProperty(\'setUTCMilliseconds\') is expected to be true'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setUTCMilliseconds/S15.9.5.29_A1_T3.js b/js/src/tests/test262/built-ins/Date/prototype/setUTCMilliseconds/S15.9.5.29_A1_T3.js
new file mode 100644
index 0000000000..a7508f1b58
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setUTCMilliseconds/S15.9.5.29_A1_T3.js
@@ -0,0 +1,22 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype property "setUTCMilliseconds" has { DontEnum }
+    attributes
+esid: sec-date.prototype.setutcmilliseconds
+description: Checking DontEnum attribute
+---*/
+assert(
+  !Date.prototype.propertyIsEnumerable('setUTCMilliseconds'),
+  'The value of !Date.prototype.propertyIsEnumerable(\'setUTCMilliseconds\') is expected to be true'
+);
+
+for (var x in Date.prototype) {
+  assert.notSameValue(x, "setUTCMilliseconds", 'The value of x is not "setUTCMilliseconds"');
+}
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setUTCMilliseconds/S15.9.5.29_A2_T1.js b/js/src/tests/test262/built-ins/Date/prototype/setUTCMilliseconds/S15.9.5.29_A2_T1.js
new file mode 100644
index 0000000000..dbaabc809e
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setUTCMilliseconds/S15.9.5.29_A2_T1.js
@@ -0,0 +1,21 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The "length" property of the "setUTCMilliseconds" is 1
+esid: sec-date.prototype.setutcmilliseconds
+description: The "length" property of the "setUTCMilliseconds" is 1
+---*/
+assert.sameValue(
+  Date.prototype.setUTCMilliseconds.hasOwnProperty("length"),
+  true,
+  'Date.prototype.setUTCMilliseconds.hasOwnProperty("length") must return true'
+);
+
+assert.sameValue(
+  Date.prototype.setUTCMilliseconds.length,
+  1,
+  'The value of Date.prototype.setUTCMilliseconds.length is expected to be 1'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setUTCMilliseconds/S15.9.5.29_A3_T1.js b/js/src/tests/test262/built-ins/Date/prototype/setUTCMilliseconds/S15.9.5.29_A3_T1.js
new file mode 100644
index 0000000000..6345c92b26
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setUTCMilliseconds/S15.9.5.29_A3_T1.js
@@ -0,0 +1,24 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype.setUTCMilliseconds property "length" has { ReadOnly,
+    DontDelete, DontEnum } attributes
+esid: sec-date.prototype.setutcmilliseconds
+description: Checking ReadOnly attribute
+includes: [propertyHelper.js]
+---*/
+
+var x = Date.prototype.setUTCMilliseconds.length;
+verifyNotWritable(Date.prototype.setUTCMilliseconds, "length", null, 1);
+
+assert.sameValue(
+  Date.prototype.setUTCMilliseconds.length,
+  x,
+  'The value of Date.prototype.setUTCMilliseconds.length is expected to equal the value of x'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setUTCMilliseconds/S15.9.5.29_A3_T2.js b/js/src/tests/test262/built-ins/Date/prototype/setUTCMilliseconds/S15.9.5.29_A3_T2.js
new file mode 100644
index 0000000000..7954d93fcd
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setUTCMilliseconds/S15.9.5.29_A3_T2.js
@@ -0,0 +1,24 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype.setUTCMilliseconds property "length" has { ReadOnly, !
+    DontDelete, DontEnum } attributes
+esid: sec-date.prototype.setutcmilliseconds
+description: Checking DontDelete attribute
+---*/
+assert.sameValue(
+  delete Date.prototype.setUTCMilliseconds.length,
+  true,
+  'The value of `delete Date.prototype.setUTCMilliseconds.length` is expected to be true'
+);
+
+assert(
+  !Date.prototype.setUTCMilliseconds.hasOwnProperty('length'),
+  'The value of !Date.prototype.setUTCMilliseconds.hasOwnProperty(\'length\') is expected to be true'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setUTCMilliseconds/S15.9.5.29_A3_T3.js b/js/src/tests/test262/built-ins/Date/prototype/setUTCMilliseconds/S15.9.5.29_A3_T3.js
new file mode 100644
index 0000000000..40071144d7
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setUTCMilliseconds/S15.9.5.29_A3_T3.js
@@ -0,0 +1,22 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype.setUTCMilliseconds property "length" has { ReadOnly,
+    DontDelete, DontEnum } attributes
+esid: sec-date.prototype.setutcmilliseconds
+description: Checking DontEnum attribute
+---*/
+assert(
+  !Date.prototype.setUTCMilliseconds.propertyIsEnumerable('length'),
+  'The value of !Date.prototype.setUTCMilliseconds.propertyIsEnumerable(\'length\') is expected to be true'
+);
+
+for (var x in Date.prototype.setUTCMilliseconds) {
+  assert.notSameValue(x, "length", 'The value of x is not "length"');
+}
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setUTCMilliseconds/arg-coercion-order.js b/js/src/tests/test262/built-ins/Date/prototype/setUTCMilliseconds/arg-coercion-order.js
new file mode 100644
index 0000000000..02f2c3fd8a
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setUTCMilliseconds/arg-coercion-order.js
@@ -0,0 +1,32 @@
+// Copyright (C) 2021 Kevin Gibbons. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.setutcmilliseconds
+description: Order of coercion of provided argument vs NaN check
+info: |
+  1. Let t be ? thisTimeValue(this value).
+  2. Let dt be ? ToNumber(date).
+  3. If t is NaN, return NaN.
+  4. Set t to LocalTime(t).
+  5. Let newDate be MakeDate(MakeDay(YearFromTime(t), MonthFromTime(t), dt), TimeWithinDay(t)).
+  6. Let u be TimeClip(UTC(newDate)).
+  7. Set the [[DateValue]] internal slot of this Date object to u.
+  8. Return u.
+---*/
+
+var date = new Date(NaN);
+var callCount = 0;
+var arg = {
+  valueOf: function() {
+    callCount += 1;
+    return 0;
+  }
+};
+
+var returnValue = date.setUTCMilliseconds(arg);
+
+assert.sameValue(callCount, 1, 'ToNumber invoked exactly once');
+assert.sameValue(returnValue, NaN, 'argument is ignored when `this` is an invalid date');
+assert.sameValue(date.getTime(), NaN, 'argument is ignored when `this` is an invalid date');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setUTCMilliseconds/browser.js b/js/src/tests/test262/built-ins/Date/prototype/setUTCMilliseconds/browser.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setUTCMilliseconds/browser.js
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setUTCMilliseconds/name.js b/js/src/tests/test262/built-ins/Date/prototype/setUTCMilliseconds/name.js
new file mode 100644
index 0000000000..65d0bd6f99
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setUTCMilliseconds/name.js
@@ -0,0 +1,28 @@
+// Copyright (C) 2015 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.prototype.setutcmilliseconds
+description: >
+  Date.prototype.setUTCMilliseconds.name is "setUTCMilliseconds".
+info: |
+  Date.prototype.setUTCMilliseconds ( ms )
+
+  17 ECMAScript Standard Built-in Objects:
+    Every built-in Function object, including constructors, that is not
+    identified as an anonymous function has a name property whose value
+    is a String.
+
+    Unless otherwise specified, the name property of a built-in Function
+    object, if it exists, has the attributes { [[Writable]]: false,
+    [[Enumerable]]: false, [[Configurable]]: true }.
+includes: [propertyHelper.js]
+---*/
+
+assert.sameValue(Date.prototype.setUTCMilliseconds.name, "setUTCMilliseconds");
+
+verifyNotEnumerable(Date.prototype.setUTCMilliseconds, "name");
+verifyNotWritable(Date.prototype.setUTCMilliseconds, "name");
+verifyConfigurable(Date.prototype.setUTCMilliseconds, "name");
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setUTCMilliseconds/not-a-constructor.js b/js/src/tests/test262/built-ins/Date/prototype/setUTCMilliseconds/not-a-constructor.js
new file mode 100644
index 0000000000..a7e4cbcc7b
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setUTCMilliseconds/not-a-constructor.js
@@ -0,0 +1,35 @@
+// Copyright (C) 2020 Rick Waldron. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-ecmascript-standard-built-in-objects
+description: >
+  Date.prototype.setUTCMilliseconds does not implement [[Construct]], is not new-able
+info: |
+  ECMAScript Function Objects
+
+  Built-in function objects that are not identified as constructors do not
+  implement the [[Construct]] internal method unless otherwise specified in
+  the description of a particular function.
+
+  sec-evaluatenew
+
+  ...
+  7. If IsConstructor(constructor) is false, throw a TypeError exception.
+  ...
+includes: [isConstructor.js]
+features: [Reflect.construct, arrow-function]
+---*/
+
+assert.sameValue(
+  isConstructor(Date.prototype.setUTCMilliseconds),
+  false,
+  'isConstructor(Date.prototype.setUTCMilliseconds) must return false'
+);
+
+assert.throws(TypeError, () => {
+  let date = new Date(Date.now()); new date.setUTCMilliseconds();
+}, '`let date = new Date(Date.now()); new date.setUTCMilliseconds()` throws TypeError');
+
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setUTCMilliseconds/shell.js b/js/src/tests/test262/built-ins/Date/prototype/setUTCMilliseconds/shell.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setUTCMilliseconds/shell.js
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setUTCMinutes/S15.9.5.33_A1_T1.js b/js/src/tests/test262/built-ins/Date/prototype/setUTCMinutes/S15.9.5.33_A1_T1.js
new file mode 100644
index 0000000000..d2aa63596b
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setUTCMinutes/S15.9.5.33_A1_T1.js
@@ -0,0 +1,25 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype property "setUTCMinutes" has { DontEnum } attributes
+esid: sec-date.prototype.setutcminutes
+description: Checking absence of ReadOnly attribute
+---*/
+
+var x = Date.prototype.setUTCMinutes;
+if (x === 1) {
+  Date.prototype.setUTCMinutes = 2;
+} else {
+  Date.prototype.setUTCMinutes = 1;
+}
+
+assert.notSameValue(
+  Date.prototype.setUTCMinutes,
+  x,
+  'The value of Date.prototype.setUTCMinutes is expected to not equal the value of `x`'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setUTCMinutes/S15.9.5.33_A1_T2.js b/js/src/tests/test262/built-ins/Date/prototype/setUTCMinutes/S15.9.5.33_A1_T2.js
new file mode 100644
index 0000000000..14f6fa9b8f
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setUTCMinutes/S15.9.5.33_A1_T2.js
@@ -0,0 +1,22 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype property "setUTCMinutes" has { DontEnum } attributes
+esid: sec-date.prototype.setutcminutes
+description: Checking absence of DontDelete attribute
+---*/
+assert.notSameValue(
+  delete Date.prototype.setUTCMinutes,
+  false,
+  'The value of delete Date.prototype.setUTCMinutes is not false'
+);
+
+assert(
+  !Date.prototype.hasOwnProperty('setUTCMinutes'),
+  'The value of !Date.prototype.hasOwnProperty(\'setUTCMinutes\') is expected to be true'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setUTCMinutes/S15.9.5.33_A1_T3.js b/js/src/tests/test262/built-ins/Date/prototype/setUTCMinutes/S15.9.5.33_A1_T3.js
new file mode 100644
index 0000000000..0a3afc4f3f
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setUTCMinutes/S15.9.5.33_A1_T3.js
@@ -0,0 +1,20 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype property "setUTCMinutes" has { DontEnum } attributes
+esid: sec-date.prototype.setutcminutes
+description: Checking DontEnum attribute
+---*/
+assert(
+  !Date.prototype.propertyIsEnumerable('setUTCMinutes'),
+  'The value of !Date.prototype.propertyIsEnumerable(\'setUTCMinutes\') is expected to be true'
+);
+
+for (var x in Date.prototype) {
+  assert.notSameValue(x, "setUTCMinutes", 'The value of x is not "setUTCMinutes"');
+}
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setUTCMinutes/S15.9.5.33_A2_T1.js b/js/src/tests/test262/built-ins/Date/prototype/setUTCMinutes/S15.9.5.33_A2_T1.js
new file mode 100644
index 0000000000..62c01ca4b7
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setUTCMinutes/S15.9.5.33_A2_T1.js
@@ -0,0 +1,21 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The "length" property of the "setUTCMinutes" is 3
+esid: sec-date.prototype.setutcminutes
+description: The "length" property of the "setUTCMinutes" is 3
+---*/
+assert.sameValue(
+  Date.prototype.setUTCMinutes.hasOwnProperty("length"),
+  true,
+  'Date.prototype.setUTCMinutes.hasOwnProperty("length") must return true'
+);
+
+assert.sameValue(
+  Date.prototype.setUTCMinutes.length,
+  3,
+  'The value of Date.prototype.setUTCMinutes.length is expected to be 3'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setUTCMinutes/S15.9.5.33_A3_T1.js b/js/src/tests/test262/built-ins/Date/prototype/setUTCMinutes/S15.9.5.33_A3_T1.js
new file mode 100644
index 0000000000..ca46350d6b
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setUTCMinutes/S15.9.5.33_A3_T1.js
@@ -0,0 +1,24 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype.setUTCMinutes property "length" has { ReadOnly,
+    DontDelete, DontEnum } attributes
+esid: sec-date.prototype.setutcminutes
+description: Checking ReadOnly attribute
+includes: [propertyHelper.js]
+---*/
+
+var x = Date.prototype.setUTCMinutes.length;
+verifyNotWritable(Date.prototype.setUTCMinutes, "length", null, 1);
+
+assert.sameValue(
+  Date.prototype.setUTCMinutes.length,
+  x,
+  'The value of Date.prototype.setUTCMinutes.length is expected to equal the value of x'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setUTCMinutes/S15.9.5.33_A3_T2.js b/js/src/tests/test262/built-ins/Date/prototype/setUTCMinutes/S15.9.5.33_A3_T2.js
new file mode 100644
index 0000000000..de0271b5b5
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setUTCMinutes/S15.9.5.33_A3_T2.js
@@ -0,0 +1,24 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype.setUTCMinutes property "length" has { ReadOnly, !
+    DontDelete, DontEnum } attributes
+esid: sec-date.prototype.setutcminutes
+description: Checking DontDelete attribute
+---*/
+assert.sameValue(
+  delete Date.prototype.setUTCMinutes.length,
+  true,
+  'The value of `delete Date.prototype.setUTCMinutes.length` is expected to be true'
+);
+
+assert(
+  !Date.prototype.setUTCMinutes.hasOwnProperty('length'),
+  'The value of !Date.prototype.setUTCMinutes.hasOwnProperty(\'length\') is expected to be true'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setUTCMinutes/S15.9.5.33_A3_T3.js b/js/src/tests/test262/built-ins/Date/prototype/setUTCMinutes/S15.9.5.33_A3_T3.js
new file mode 100644
index 0000000000..57301fe91f
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setUTCMinutes/S15.9.5.33_A3_T3.js
@@ -0,0 +1,22 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype.setUTCMinutes property "length" has { ReadOnly,
+    DontDelete, DontEnum } attributes
+esid: sec-date.prototype.setutcminutes
+description: Checking DontEnum attribute
+---*/
+assert(
+  !Date.prototype.setUTCMinutes.propertyIsEnumerable('length'),
+  'The value of !Date.prototype.setUTCMinutes.propertyIsEnumerable(\'length\') is expected to be true'
+);
+
+for (var x in Date.prototype.setUTCMinutes) {
+  assert.notSameValue(x, "length", 'The value of x is not "length"');
+}
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setUTCMinutes/arg-coercion-order.js b/js/src/tests/test262/built-ins/Date/prototype/setUTCMinutes/arg-coercion-order.js
new file mode 100644
index 0000000000..83b0a0346d
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setUTCMinutes/arg-coercion-order.js
@@ -0,0 +1,50 @@
+// Copyright (C) 2021 Kevin Gibbons. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.setutcminutes
+description: Order of coercion of provided argument vs NaN check
+info: |
+  1. Let t be ? thisTimeValue(this value).
+  2. Let m be ? ToNumber(min).
+  3. If sec is present, let s be ? ToNumber(sec).
+  4. If ms is present, let milli be ? ToNumber(ms).
+  5. If t is NaN, return NaN.
+  6. If sec is not present, let s be SecFromTime(t).
+  7. If ms is not present, let milli be msFromTime(t).
+  8. Let date be MakeDate(Day(t), MakeTime(HourFromTime(t), m, s, milli)).
+  9. Let v be TimeClip(date).
+  10. Set the [[DateValue]] internal slot of this Date object to v.
+  11. Return v.
+includes: [compareArray.js]
+---*/
+
+var date = new Date(NaN);
+var effects = [];
+var argMin = {
+  valueOf: function() {
+    effects.push('valueOf min');
+    return 0;
+  }
+};
+var argSec = {
+  valueOf: function() {
+    effects.push('valueOf sec');
+    return 0;
+  }
+};
+var argMs = {
+  valueOf: function() {
+    effects.push('valueOf ms');
+    return 0;
+  }
+};
+
+var returnValue = date.setUTCMinutes(argMin, argSec, argMs);
+
+var expectedEffects = ['valueOf min', 'valueOf sec', 'valueOf ms'];
+
+assert.compareArray(effects, expectedEffects);
+assert.sameValue(returnValue, NaN, 'argument is ignored when `this` is an invalid date');
+assert.sameValue(date.getTime(), NaN, 'argument is ignored when `this` is an invalid date');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setUTCMinutes/browser.js b/js/src/tests/test262/built-ins/Date/prototype/setUTCMinutes/browser.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setUTCMinutes/browser.js
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setUTCMinutes/name.js b/js/src/tests/test262/built-ins/Date/prototype/setUTCMinutes/name.js
new file mode 100644
index 0000000000..db16d42c80
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setUTCMinutes/name.js
@@ -0,0 +1,28 @@
+// Copyright (C) 2015 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.prototype.setutcminutes
+description: >
+  Date.prototype.setUTCMinutes.name is "setUTCMinutes".
+info: |
+  Date.prototype.setUTCMinutes ( min [ , sec [, ms ] ] )
+
+  17 ECMAScript Standard Built-in Objects:
+    Every built-in Function object, including constructors, that is not
+    identified as an anonymous function has a name property whose value
+    is a String.
+
+    Unless otherwise specified, the name property of a built-in Function
+    object, if it exists, has the attributes { [[Writable]]: false,
+    [[Enumerable]]: false, [[Configurable]]: true }.
+includes: [propertyHelper.js]
+---*/
+
+assert.sameValue(Date.prototype.setUTCMinutes.name, "setUTCMinutes");
+
+verifyNotEnumerable(Date.prototype.setUTCMinutes, "name");
+verifyNotWritable(Date.prototype.setUTCMinutes, "name");
+verifyConfigurable(Date.prototype.setUTCMinutes, "name");
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setUTCMinutes/not-a-constructor.js b/js/src/tests/test262/built-ins/Date/prototype/setUTCMinutes/not-a-constructor.js
new file mode 100644
index 0000000000..01f6a9293f
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setUTCMinutes/not-a-constructor.js
@@ -0,0 +1,35 @@
+// Copyright (C) 2020 Rick Waldron. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-ecmascript-standard-built-in-objects
+description: >
+  Date.prototype.setUTCMinutes does not implement [[Construct]], is not new-able
+info: |
+  ECMAScript Function Objects
+
+  Built-in function objects that are not identified as constructors do not
+  implement the [[Construct]] internal method unless otherwise specified in
+  the description of a particular function.
+
+  sec-evaluatenew
+
+  ...
+  7. If IsConstructor(constructor) is false, throw a TypeError exception.
+  ...
+includes: [isConstructor.js]
+features: [Reflect.construct, arrow-function]
+---*/
+
+assert.sameValue(
+  isConstructor(Date.prototype.setUTCMinutes),
+  false,
+  'isConstructor(Date.prototype.setUTCMinutes) must return false'
+);
+
+assert.throws(TypeError, () => {
+  let date = new Date(Date.now()); new date.setUTCMinutes();
+}, '`let date = new Date(Date.now()); new date.setUTCMinutes()` throws TypeError');
+
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setUTCMinutes/shell.js b/js/src/tests/test262/built-ins/Date/prototype/setUTCMinutes/shell.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setUTCMinutes/shell.js
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setUTCMonth/S15.9.5.39_A1_T1.js b/js/src/tests/test262/built-ins/Date/prototype/setUTCMonth/S15.9.5.39_A1_T1.js
new file mode 100644
index 0000000000..3a47d37da5
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setUTCMonth/S15.9.5.39_A1_T1.js
@@ -0,0 +1,25 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype property "setUTCMonth" has { DontEnum } attributes
+esid: sec-date.prototype.setutcmonth
+description: Checking absence of ReadOnly attribute
+---*/
+
+var x = Date.prototype.setUTCMonth;
+if (x === 1) {
+  Date.prototype.setUTCMonth = 2;
+} else {
+  Date.prototype.setUTCMonth = 1;
+}
+
+assert.notSameValue(
+  Date.prototype.setUTCMonth,
+  x,
+  'The value of Date.prototype.setUTCMonth is expected to not equal the value of `x`'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setUTCMonth/S15.9.5.39_A1_T2.js b/js/src/tests/test262/built-ins/Date/prototype/setUTCMonth/S15.9.5.39_A1_T2.js
new file mode 100644
index 0000000000..e250febbfe
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setUTCMonth/S15.9.5.39_A1_T2.js
@@ -0,0 +1,22 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype property "setUTCMonth" has { DontEnum } attributes
+esid: sec-date.prototype.setutcmonth
+description: Checking absence of DontDelete attribute
+---*/
+assert.notSameValue(
+  delete Date.prototype.setUTCMonth,
+  false,
+  'The value of delete Date.prototype.setUTCMonth is not false'
+);
+
+assert(
+  !Date.prototype.hasOwnProperty('setUTCMonth'),
+  'The value of !Date.prototype.hasOwnProperty(\'setUTCMonth\') is expected to be true'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setUTCMonth/S15.9.5.39_A1_T3.js b/js/src/tests/test262/built-ins/Date/prototype/setUTCMonth/S15.9.5.39_A1_T3.js
new file mode 100644
index 0000000000..bf3154fab4
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setUTCMonth/S15.9.5.39_A1_T3.js
@@ -0,0 +1,20 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype property "setUTCMonth" has { DontEnum } attributes
+esid: sec-date.prototype.setutcmonth
+description: Checking DontEnum attribute
+---*/
+assert(
+  !Date.prototype.propertyIsEnumerable('setUTCMonth'),
+  'The value of !Date.prototype.propertyIsEnumerable(\'setUTCMonth\') is expected to be true'
+);
+
+for (var x in Date.prototype) {
+  assert.notSameValue(x, "setUTCMonth", 'The value of x is not "setUTCMonth"');
+}
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setUTCMonth/S15.9.5.39_A2_T1.js b/js/src/tests/test262/built-ins/Date/prototype/setUTCMonth/S15.9.5.39_A2_T1.js
new file mode 100644
index 0000000000..e917ba9810
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setUTCMonth/S15.9.5.39_A2_T1.js
@@ -0,0 +1,21 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The "length" property of the "setUTCMonth" is 2
+esid: sec-date.prototype.setutcmonth
+description: The "length" property of the "setUTCMonth" is 2
+---*/
+assert.sameValue(
+  Date.prototype.setUTCMonth.hasOwnProperty("length"),
+  true,
+  'Date.prototype.setUTCMonth.hasOwnProperty("length") must return true'
+);
+
+assert.sameValue(
+  Date.prototype.setUTCMonth.length,
+  2,
+  'The value of Date.prototype.setUTCMonth.length is expected to be 2'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setUTCMonth/S15.9.5.39_A3_T1.js b/js/src/tests/test262/built-ins/Date/prototype/setUTCMonth/S15.9.5.39_A3_T1.js
new file mode 100644
index 0000000000..cf63985f95
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setUTCMonth/S15.9.5.39_A3_T1.js
@@ -0,0 +1,24 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype.setUTCMonth property "length" has { ReadOnly,
+    DontDelete, DontEnum } attributes
+esid: sec-date.prototype.setutcmonth
+description: Checking ReadOnly attribute
+includes: [propertyHelper.js]
+---*/
+
+var x = Date.prototype.setUTCMonth.length;
+verifyNotWritable(Date.prototype.setUTCMonth, "length", null, 1);
+
+assert.sameValue(
+  Date.prototype.setUTCMonth.length,
+  x,
+  'The value of Date.prototype.setUTCMonth.length is expected to equal the value of x'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setUTCMonth/S15.9.5.39_A3_T2.js b/js/src/tests/test262/built-ins/Date/prototype/setUTCMonth/S15.9.5.39_A3_T2.js
new file mode 100644
index 0000000000..923cba2989
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setUTCMonth/S15.9.5.39_A3_T2.js
@@ -0,0 +1,24 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype.setUTCMonth property "length" has { ReadOnly, !
+    DontDelete, DontEnum } attributes
+esid: sec-date.prototype.setutcmonth
+description: Checking DontDelete attribute
+---*/
+assert.sameValue(
+  delete Date.prototype.setUTCMonth.length,
+  true,
+  'The value of `delete Date.prototype.setUTCMonth.length` is expected to be true'
+);
+
+assert(
+  !Date.prototype.setUTCMonth.hasOwnProperty('length'),
+  'The value of !Date.prototype.setUTCMonth.hasOwnProperty(\'length\') is expected to be true'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setUTCMonth/S15.9.5.39_A3_T3.js b/js/src/tests/test262/built-ins/Date/prototype/setUTCMonth/S15.9.5.39_A3_T3.js
new file mode 100644
index 0000000000..03d107db9b
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setUTCMonth/S15.9.5.39_A3_T3.js
@@ -0,0 +1,22 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype.setUTCMonth property "length" has { ReadOnly,
+    DontDelete, DontEnum } attributes
+esid: sec-date.prototype.setutcmonth
+description: Checking DontEnum attribute
+---*/
+assert(
+  !Date.prototype.setUTCMonth.propertyIsEnumerable('length'),
+  'The value of !Date.prototype.setUTCMonth.propertyIsEnumerable(\'length\') is expected to be true'
+);
+
+for (var x in Date.prototype.setUTCMonth) {
+  assert.notSameValue(x, "length", 'The value of x is not "length"');
+}
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setUTCMonth/arg-coercion-order.js b/js/src/tests/test262/built-ins/Date/prototype/setUTCMonth/arg-coercion-order.js
new file mode 100644
index 0000000000..c94d09f56d
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setUTCMonth/arg-coercion-order.js
@@ -0,0 +1,42 @@
+// Copyright (C) 2021 Kevin Gibbons. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.setutcmonth
+description: Order of coercion of provided argument vs NaN check
+info: |
+  1. Let t be ? thisTimeValue(this value).
+  2. Let m be ? ToNumber(month).
+  3. If date is present, let dt be ? ToNumber(date).
+  4. If t is NaN, return NaN.
+  5. If date is not present, let dt be DateFromTime(t).
+  6. Let newDate be MakeDate(MakeDay(YearFromTime(t), m, dt), TimeWithinDay(t)).
+  7. Let v be TimeClip(newDate).
+  8. Set the [[DateValue]] internal slot of this Date object to v.
+  9. Return v.
+includes: [compareArray.js]
+---*/
+
+var date = new Date(NaN);
+var effects = [];
+var argMonth = {
+  valueOf: function() {
+    effects.push('valueOf month');
+    return 0;
+  }
+};
+var argDate = {
+  valueOf: function() {
+    effects.push('valueOf date');
+    return 0;
+  }
+};
+
+var returnValue = date.setUTCMonth(argMonth, argDate);
+
+var expectedEffects = ['valueOf month', 'valueOf date'];
+
+assert.compareArray(effects, expectedEffects);
+assert.sameValue(returnValue, NaN, 'argument is ignored when `this` is an invalid date');
+assert.sameValue(date.getTime(), NaN, 'argument is ignored when `this` is an invalid date');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setUTCMonth/browser.js b/js/src/tests/test262/built-ins/Date/prototype/setUTCMonth/browser.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setUTCMonth/browser.js
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setUTCMonth/name.js b/js/src/tests/test262/built-ins/Date/prototype/setUTCMonth/name.js
new file mode 100644
index 0000000000..70ca8822ea
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setUTCMonth/name.js
@@ -0,0 +1,28 @@
+// Copyright (C) 2015 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.prototype.setutcmonth
+description: >
+  Date.prototype.setUTCMonth.name is "setUTCMonth".
+info: |
+  Date.prototype.setUTCMonth ( month [ , date ] )
+
+  17 ECMAScript Standard Built-in Objects:
+    Every built-in Function object, including constructors, that is not
+    identified as an anonymous function has a name property whose value
+    is a String.
+
+    Unless otherwise specified, the name property of a built-in Function
+    object, if it exists, has the attributes { [[Writable]]: false,
+    [[Enumerable]]: false, [[Configurable]]: true }.
+includes: [propertyHelper.js]
+---*/
+
+assert.sameValue(Date.prototype.setUTCMonth.name, "setUTCMonth");
+
+verifyNotEnumerable(Date.prototype.setUTCMonth, "name");
+verifyNotWritable(Date.prototype.setUTCMonth, "name");
+verifyConfigurable(Date.prototype.setUTCMonth, "name");
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setUTCMonth/not-a-constructor.js b/js/src/tests/test262/built-ins/Date/prototype/setUTCMonth/not-a-constructor.js
new file mode 100644
index 0000000000..977faba6d2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setUTCMonth/not-a-constructor.js
@@ -0,0 +1,35 @@
+// Copyright (C) 2020 Rick Waldron. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-ecmascript-standard-built-in-objects
+description: >
+  Date.prototype.setUTCMonth does not implement [[Construct]], is not new-able
+info: |
+  ECMAScript Function Objects
+
+  Built-in function objects that are not identified as constructors do not
+  implement the [[Construct]] internal method unless otherwise specified in
+  the description of a particular function.
+
+  sec-evaluatenew
+
+  ...
+  7. If IsConstructor(constructor) is false, throw a TypeError exception.
+  ...
+includes: [isConstructor.js]
+features: [Reflect.construct, arrow-function]
+---*/
+
+assert.sameValue(
+  isConstructor(Date.prototype.setUTCMonth),
+  false,
+  'isConstructor(Date.prototype.setUTCMonth) must return false'
+);
+
+assert.throws(TypeError, () => {
+  let date = new Date(Date.now()); new date.setUTCMonth();
+}, '`let date = new Date(Date.now()); new date.setUTCMonth()` throws TypeError');
+
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setUTCMonth/shell.js b/js/src/tests/test262/built-ins/Date/prototype/setUTCMonth/shell.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setUTCMonth/shell.js
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setUTCSeconds/S15.9.5.31_A1_T1.js b/js/src/tests/test262/built-ins/Date/prototype/setUTCSeconds/S15.9.5.31_A1_T1.js
new file mode 100644
index 0000000000..1d75241ef8
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setUTCSeconds/S15.9.5.31_A1_T1.js
@@ -0,0 +1,25 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype property "setUTCSeconds" has { DontEnum } attributes
+esid: sec-date.prototype.setutcseconds
+description: Checking absence of ReadOnly attribute
+---*/
+
+var x = Date.prototype.setUTCSeconds;
+if (x === 1) {
+  Date.prototype.setUTCSeconds = 2;
+} else {
+  Date.prototype.setUTCSeconds = 1;
+}
+
+assert.notSameValue(
+  Date.prototype.setUTCSeconds,
+  x,
+  'The value of Date.prototype.setUTCSeconds is expected to not equal the value of `x`'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setUTCSeconds/S15.9.5.31_A1_T2.js b/js/src/tests/test262/built-ins/Date/prototype/setUTCSeconds/S15.9.5.31_A1_T2.js
new file mode 100644
index 0000000000..4a0cfaa0f6
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setUTCSeconds/S15.9.5.31_A1_T2.js
@@ -0,0 +1,22 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype property "setUTCSeconds" has { DontEnum } attributes
+esid: sec-date.prototype.setutcseconds
+description: Checking absence of DontDelete attribute
+---*/
+assert.notSameValue(
+  delete Date.prototype.setUTCSeconds,
+  false,
+  'The value of delete Date.prototype.setUTCSeconds is not false'
+);
+
+assert(
+  !Date.prototype.hasOwnProperty('setUTCSeconds'),
+  'The value of !Date.prototype.hasOwnProperty(\'setUTCSeconds\') is expected to be true'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setUTCSeconds/S15.9.5.31_A1_T3.js b/js/src/tests/test262/built-ins/Date/prototype/setUTCSeconds/S15.9.5.31_A1_T3.js
new file mode 100644
index 0000000000..efb81dd571
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setUTCSeconds/S15.9.5.31_A1_T3.js
@@ -0,0 +1,20 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype property "setUTCSeconds" has { DontEnum } attributes
+esid: sec-date.prototype.setutcseconds
+description: Checking DontEnum attribute
+---*/
+assert(
+  !Date.prototype.propertyIsEnumerable('setUTCSeconds'),
+  'The value of !Date.prototype.propertyIsEnumerable(\'setUTCSeconds\') is expected to be true'
+);
+
+for (var x in Date.prototype) {
+  assert.notSameValue(x, "setUTCSeconds", 'The value of x is not "setUTCSeconds"');
+}
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setUTCSeconds/S15.9.5.31_A2_T1.js b/js/src/tests/test262/built-ins/Date/prototype/setUTCSeconds/S15.9.5.31_A2_T1.js
new file mode 100644
index 0000000000..314194b4c4
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setUTCSeconds/S15.9.5.31_A2_T1.js
@@ -0,0 +1,21 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The "length" property of the "setUTCSeconds" is 2
+esid: sec-date.prototype.setutcseconds
+description: The "length" property of the "setUTCSeconds" is 2
+---*/
+assert.sameValue(
+  Date.prototype.setUTCSeconds.hasOwnProperty("length"),
+  true,
+  'Date.prototype.setUTCSeconds.hasOwnProperty("length") must return true'
+);
+
+assert.sameValue(
+  Date.prototype.setUTCSeconds.length,
+  2,
+  'The value of Date.prototype.setUTCSeconds.length is expected to be 2'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setUTCSeconds/S15.9.5.31_A3_T1.js b/js/src/tests/test262/built-ins/Date/prototype/setUTCSeconds/S15.9.5.31_A3_T1.js
new file mode 100644
index 0000000000..422b8d2f54
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setUTCSeconds/S15.9.5.31_A3_T1.js
@@ -0,0 +1,24 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype.setUTCSeconds property "length" has { ReadOnly,
+    DontDelete, DontEnum } attributes
+esid: sec-date.prototype.setutcseconds
+description: Checking ReadOnly attribute
+includes: [propertyHelper.js]
+---*/
+
+var x = Date.prototype.setUTCSeconds.length;
+verifyNotWritable(Date.prototype.setUTCSeconds, "length", null, 1);
+
+assert.sameValue(
+  Date.prototype.setUTCSeconds.length,
+  x,
+  'The value of Date.prototype.setUTCSeconds.length is expected to equal the value of x'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setUTCSeconds/S15.9.5.31_A3_T2.js b/js/src/tests/test262/built-ins/Date/prototype/setUTCSeconds/S15.9.5.31_A3_T2.js
new file mode 100644
index 0000000000..195b848893
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setUTCSeconds/S15.9.5.31_A3_T2.js
@@ -0,0 +1,24 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype.setUTCSeconds property "length" has { ReadOnly, !
+    DontDelete, DontEnum } attributes
+esid: sec-date.prototype.setutcseconds
+description: Checking DontDelete attribute
+---*/
+assert.sameValue(
+  delete Date.prototype.setUTCSeconds.length,
+  true,
+  'The value of `delete Date.prototype.setUTCSeconds.length` is expected to be true'
+);
+
+assert(
+  !Date.prototype.setUTCSeconds.hasOwnProperty('length'),
+  'The value of !Date.prototype.setUTCSeconds.hasOwnProperty(\'length\') is expected to be true'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setUTCSeconds/S15.9.5.31_A3_T3.js b/js/src/tests/test262/built-ins/Date/prototype/setUTCSeconds/S15.9.5.31_A3_T3.js
new file mode 100644
index 0000000000..aec6f68e8d
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setUTCSeconds/S15.9.5.31_A3_T3.js
@@ -0,0 +1,22 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype.setUTCSeconds property "length" has { ReadOnly,
+    DontDelete, DontEnum } attributes
+esid: sec-date.prototype.setutcseconds
+description: Checking DontEnum attribute
+---*/
+assert(
+  !Date.prototype.setUTCSeconds.propertyIsEnumerable('length'),
+  'The value of !Date.prototype.setUTCSeconds.propertyIsEnumerable(\'length\') is expected to be true'
+);
+
+for (var x in Date.prototype.setUTCSeconds) {
+  assert.notSameValue(x, "length", 'The value of x is not "length"');
+}
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setUTCSeconds/arg-coercion-order.js b/js/src/tests/test262/built-ins/Date/prototype/setUTCSeconds/arg-coercion-order.js
new file mode 100644
index 0000000000..a453b5a2c2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setUTCSeconds/arg-coercion-order.js
@@ -0,0 +1,42 @@
+// Copyright (C) 2021 Kevin Gibbons. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.setutcseconds
+description: Order of coercion of provided arguments vs NaN check
+info: |
+  1. Let t be ? thisTimeValue(this value).
+  2. Let s be ? ToNumber(sec).
+  3. If ms is present, let milli be ? ToNumber(ms).
+  4. If t is NaN, return NaN.
+  5. If ms is not present, let milli be msFromTime(t).
+  6. Let date be MakeDate(Day(t), MakeTime(HourFromTime(t), MinFromTime(t), s, milli)).
+  7. Let v be TimeClip(date).
+  8. Set the [[DateValue]] internal slot of this Date object to v.
+  9. Return v.
+includes: [compareArray.js]
+---*/
+
+var date = new Date(NaN);
+var effects = [];
+var argSec = {
+  valueOf: function() {
+    effects.push('valueOf sec');
+    return 0;
+  }
+};
+var argMs = {
+  valueOf: function() {
+    effects.push('valueOf ms');
+    return 0;
+  }
+};
+
+var returnValue = date.setUTCSeconds(argSec, argMs);
+
+var expectedEffects = ['valueOf sec', 'valueOf ms'];
+
+assert.compareArray(effects, expectedEffects);
+assert.sameValue(returnValue, NaN, 'argument is ignored when `this` is an invalid date');
+assert.sameValue(date.getTime(), NaN, 'argument is ignored when `this` is an invalid date');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setUTCSeconds/browser.js b/js/src/tests/test262/built-ins/Date/prototype/setUTCSeconds/browser.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setUTCSeconds/browser.js
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setUTCSeconds/name.js b/js/src/tests/test262/built-ins/Date/prototype/setUTCSeconds/name.js
new file mode 100644
index 0000000000..b73874e84a
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setUTCSeconds/name.js
@@ -0,0 +1,28 @@
+// Copyright (C) 2015 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.prototype.setutcseconds
+description: >
+  Date.prototype.setUTCSeconds.name is "setUTCSeconds".
+info: |
+  Date.prototype.setUTCSeconds ( sec [ , ms ] )
+
+  17 ECMAScript Standard Built-in Objects:
+    Every built-in Function object, including constructors, that is not
+    identified as an anonymous function has a name property whose value
+    is a String.
+
+    Unless otherwise specified, the name property of a built-in Function
+    object, if it exists, has the attributes { [[Writable]]: false,
+    [[Enumerable]]: false, [[Configurable]]: true }.
+includes: [propertyHelper.js]
+---*/
+
+assert.sameValue(Date.prototype.setUTCSeconds.name, "setUTCSeconds");
+
+verifyNotEnumerable(Date.prototype.setUTCSeconds, "name");
+verifyNotWritable(Date.prototype.setUTCSeconds, "name");
+verifyConfigurable(Date.prototype.setUTCSeconds, "name");
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setUTCSeconds/not-a-constructor.js b/js/src/tests/test262/built-ins/Date/prototype/setUTCSeconds/not-a-constructor.js
new file mode 100644
index 0000000000..b6eebae507
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setUTCSeconds/not-a-constructor.js
@@ -0,0 +1,35 @@
+// Copyright (C) 2020 Rick Waldron. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-ecmascript-standard-built-in-objects
+description: >
+  Date.prototype.setUTCSeconds does not implement [[Construct]], is not new-able
+info: |
+  ECMAScript Function Objects
+
+  Built-in function objects that are not identified as constructors do not
+  implement the [[Construct]] internal method unless otherwise specified in
+  the description of a particular function.
+
+  sec-evaluatenew
+
+  ...
+  7. If IsConstructor(constructor) is false, throw a TypeError exception.
+  ...
+includes: [isConstructor.js]
+features: [Reflect.construct, arrow-function]
+---*/
+
+assert.sameValue(
+  isConstructor(Date.prototype.setUTCSeconds),
+  false,
+  'isConstructor(Date.prototype.setUTCSeconds) must return false'
+);
+
+assert.throws(TypeError, () => {
+  let date = new Date(Date.now()); new date.setUTCSeconds();
+}, '`let date = new Date(Date.now()); new date.setUTCSeconds()` throws TypeError');
+
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/setUTCSeconds/shell.js b/js/src/tests/test262/built-ins/Date/prototype/setUTCSeconds/shell.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/setUTCSeconds/shell.js
diff --git a/js/src/tests/test262/built-ins/Date/prototype/shell.js b/js/src/tests/test262/built-ins/Date/prototype/shell.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/shell.js
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toDateString/S15.9.5.3_A1_T1.js b/js/src/tests/test262/built-ins/Date/prototype/toDateString/S15.9.5.3_A1_T1.js
new file mode 100644
index 0000000000..8c3b6275c1
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toDateString/S15.9.5.3_A1_T1.js
@@ -0,0 +1,25 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype property "toDateString" has { DontEnum } attributes
+esid: sec-date.prototype.todatestring
+description: Checking absence of ReadOnly attribute
+---*/
+
+var x = Date.prototype.toDateString;
+if (x === 1) {
+  Date.prototype.toDateString = 2;
+} else {
+  Date.prototype.toDateString = 1;
+}
+
+assert.notSameValue(
+  Date.prototype.toDateString,
+  x,
+  'The value of Date.prototype.toDateString is expected to not equal the value of `x`'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toDateString/S15.9.5.3_A1_T2.js b/js/src/tests/test262/built-ins/Date/prototype/toDateString/S15.9.5.3_A1_T2.js
new file mode 100644
index 0000000000..b577a2dbc5
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toDateString/S15.9.5.3_A1_T2.js
@@ -0,0 +1,22 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype property "toDateString" has { DontEnum } attributes
+esid: sec-date.prototype.todatestring
+description: Checking absence of DontDelete attribute
+---*/
+assert.notSameValue(
+  delete Date.prototype.toDateString,
+  false,
+  'The value of delete Date.prototype.toDateString is not false'
+);
+
+assert(
+  !Date.prototype.hasOwnProperty('toDateString'),
+  'The value of !Date.prototype.hasOwnProperty(\'toDateString\') is expected to be true'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toDateString/S15.9.5.3_A1_T3.js b/js/src/tests/test262/built-ins/Date/prototype/toDateString/S15.9.5.3_A1_T3.js
new file mode 100644
index 0000000000..19fead51e3
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toDateString/S15.9.5.3_A1_T3.js
@@ -0,0 +1,20 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype property "toDateString" has { DontEnum } attributes
+esid: sec-date.prototype.todatestring
+description: Checking DontEnum attribute
+---*/
+assert(
+  !Date.prototype.propertyIsEnumerable('toDateString'),
+  'The value of !Date.prototype.propertyIsEnumerable(\'toDateString\') is expected to be true'
+);
+
+for (var x in Date.prototype) {
+  assert.notSameValue(x, "toDateString", 'The value of x is not "toDateString"');
+}
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toDateString/S15.9.5.3_A2_T1.js b/js/src/tests/test262/built-ins/Date/prototype/toDateString/S15.9.5.3_A2_T1.js
new file mode 100644
index 0000000000..ec44678499
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toDateString/S15.9.5.3_A2_T1.js
@@ -0,0 +1,21 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The "length" property of the "toDateString" is 0
+esid: sec-date.prototype.todatestring
+description: The "length" property of the "toDateString" is 0
+---*/
+assert.sameValue(
+  Date.prototype.toDateString.hasOwnProperty("length"),
+  true,
+  'Date.prototype.toDateString.hasOwnProperty("length") must return true'
+);
+
+assert.sameValue(
+  Date.prototype.toDateString.length,
+  0,
+  'The value of Date.prototype.toDateString.length is expected to be 0'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toDateString/S15.9.5.3_A3_T1.js b/js/src/tests/test262/built-ins/Date/prototype/toDateString/S15.9.5.3_A3_T1.js
new file mode 100644
index 0000000000..ea918616ee
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toDateString/S15.9.5.3_A3_T1.js
@@ -0,0 +1,24 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype.toDateString property "length" has { ReadOnly,
+    DontDelete, DontEnum } attributes
+esid: sec-date.prototype.todatestring
+description: Checking ReadOnly attribute
+includes: [propertyHelper.js]
+---*/
+
+var x = Date.prototype.toDateString.length;
+verifyNotWritable(Date.prototype.toDateString, "length", null, 1);
+
+assert.sameValue(
+  Date.prototype.toDateString.length,
+  x,
+  'The value of Date.prototype.toDateString.length is expected to equal the value of x'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toDateString/S15.9.5.3_A3_T2.js b/js/src/tests/test262/built-ins/Date/prototype/toDateString/S15.9.5.3_A3_T2.js
new file mode 100644
index 0000000000..d56ed18a20
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toDateString/S15.9.5.3_A3_T2.js
@@ -0,0 +1,24 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype.toDateString property "length" has { ReadOnly, !
+    DontDelete, DontEnum } attributes
+esid: sec-date.prototype.todatestring
+description: Checking DontDelete attribute
+---*/
+assert.sameValue(
+  delete Date.prototype.toDateString.length,
+  true,
+  'The value of `delete Date.prototype.toDateString.length` is expected to be true'
+);
+
+assert(
+  !Date.prototype.toDateString.hasOwnProperty('length'),
+  'The value of !Date.prototype.toDateString.hasOwnProperty(\'length\') is expected to be true'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toDateString/S15.9.5.3_A3_T3.js b/js/src/tests/test262/built-ins/Date/prototype/toDateString/S15.9.5.3_A3_T3.js
new file mode 100644
index 0000000000..fd89a02806
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toDateString/S15.9.5.3_A3_T3.js
@@ -0,0 +1,22 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype.toDateString property "length" has { ReadOnly,
+    DontDelete, DontEnum } attributes
+esid: sec-date.prototype.todatestring
+description: Checking DontEnum attribute
+---*/
+assert(
+  !Date.prototype.toDateString.propertyIsEnumerable('length'),
+  'The value of !Date.prototype.toDateString.propertyIsEnumerable(\'length\') is expected to be true'
+);
+
+for (var x in Date.prototype.toDateString) {
+  assert.notSameValue(x, "length", 'The value of x is not "length"');
+}
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toDateString/browser.js b/js/src/tests/test262/built-ins/Date/prototype/toDateString/browser.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toDateString/browser.js
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toDateString/format.js b/js/src/tests/test262/built-ins/Date/prototype/toDateString/format.js
new file mode 100644
index 0000000000..3963baa981
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toDateString/format.js
@@ -0,0 +1,21 @@
+// Copyright (C) 2017 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.prototype.todatestring
+description: Test the format of the date from toDateString
+info: |
+  Date.prototype.toDateString ( )
+
+  5. Return DateString(_t_).
+---*/
+
+let dateRegExp = /^(Sun|Mon|Tue|Wed|Thu|Fri|Sat) (Jan|Feb|Mar|Apr|May|Jun|Jul|Aug|Sep|Oct|Nov|Dec) [0-9]{2} [0-9]{4}$/
+let match = dateRegExp.exec(new Date().toDateString());
+assert.notSameValue(null, match);
+
+// Years are padded to the left with zeroes
+match = dateRegExp.exec(new Date('0020-01-01T00:00:00Z').toDateString());
+assert.notSameValue(null, match);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toDateString/invalid-date.js b/js/src/tests/test262/built-ins/Date/prototype/toDateString/invalid-date.js
new file mode 100644
index 0000000000..8a86c80abb
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toDateString/invalid-date.js
@@ -0,0 +1,17 @@
+// Copyright (C) 2017 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.prototype.todatestring
+description: Invalid Dates are rendered as "Invalid Date"
+info: |
+  Date.prototype.toDateString ( )
+
+  ...
+  3. If tv is NaN, return "Invalid Date".
+  ...
+---*/
+
+assert.sameValue(new Date(NaN).toDateString(), "Invalid Date");
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toDateString/name.js b/js/src/tests/test262/built-ins/Date/prototype/toDateString/name.js
new file mode 100644
index 0000000000..3cd99649b7
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toDateString/name.js
@@ -0,0 +1,28 @@
+// Copyright (C) 2015 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.prototype.todatestring
+description: >
+  Date.prototype.toDateString.name is "toDateString".
+info: |
+  Date.prototype.toDateString ( )
+
+  17 ECMAScript Standard Built-in Objects:
+    Every built-in Function object, including constructors, that is not
+    identified as an anonymous function has a name property whose value
+    is a String.
+
+    Unless otherwise specified, the name property of a built-in Function
+    object, if it exists, has the attributes { [[Writable]]: false,
+    [[Enumerable]]: false, [[Configurable]]: true }.
+includes: [propertyHelper.js]
+---*/
+
+assert.sameValue(Date.prototype.toDateString.name, "toDateString");
+
+verifyNotEnumerable(Date.prototype.toDateString, "name");
+verifyNotWritable(Date.prototype.toDateString, "name");
+verifyConfigurable(Date.prototype.toDateString, "name");
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toDateString/negative-year.js b/js/src/tests/test262/built-ins/Date/prototype/toDateString/negative-year.js
new file mode 100644
index 0000000000..dfd228a582
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toDateString/negative-year.js
@@ -0,0 +1,35 @@
+// Copyright (C) 2018 Richard Gibson. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+description: >
+    Negative years must be serialized with at least four digits
+esid: sec-date.prototype.todatestring
+info: |
+    Date.prototype.toDateString ( )
+
+    5. Return DateString(_t_).
+---*/
+
+var negative1DigitYearDateString = (new Date('-000001-07-01T00:00Z')).toDateString();
+var negative2DigitYearDateString = (new Date('-000012-07-01T00:00Z')).toDateString();
+var negative3DigitYearDateString = (new Date('-000123-07-01T00:00Z')).toDateString();
+var negative4DigitYearDateString = (new Date('-001234-07-01T00:00Z')).toDateString();
+var negative5DigitYearDateString = (new Date('-012345-07-01T00:00Z')).toDateString();
+var negative6DigitYearDateString = (new Date('-123456-07-01T00:00Z')).toDateString();
+
+// Date.prototype.toDateString emits values like "Fri Mar 28 2019".
+// Extract and verify just the year.
+assert.sameValue(negative1DigitYearDateString.split(' ')[3], '-0001',
+    'Date.prototype.toDateString serializes year -1 to "-0001"');
+assert.sameValue(negative2DigitYearDateString.split(' ')[3], '-0012',
+    'Date.prototype.toDateString serializes year -12 to "-0012"');
+assert.sameValue(negative3DigitYearDateString.split(' ')[3], '-0123',
+    'Date.prototype.toDateString serializes year -123 to "-0123"');
+assert.sameValue(negative4DigitYearDateString.split(' ')[3], '-1234',
+    'Date.prototype.toDateString serializes year -1234 to "-1234"');
+assert.sameValue(negative5DigitYearDateString.split(' ')[3], '-12345',
+    'Date.prototype.toDateString serializes year -12345 to "-12345"');
+assert.sameValue(negative6DigitYearDateString.split(' ')[3], '-123456',
+    'Date.prototype.toDateString serializes year -123456 to "-123456"');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toDateString/not-a-constructor.js b/js/src/tests/test262/built-ins/Date/prototype/toDateString/not-a-constructor.js
new file mode 100644
index 0000000000..b70807dc68
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toDateString/not-a-constructor.js
@@ -0,0 +1,35 @@
+// Copyright (C) 2020 Rick Waldron. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-ecmascript-standard-built-in-objects
+description: >
+  Date.prototype.toDateString does not implement [[Construct]], is not new-able
+info: |
+  ECMAScript Function Objects
+
+  Built-in function objects that are not identified as constructors do not
+  implement the [[Construct]] internal method unless otherwise specified in
+  the description of a particular function.
+
+  sec-evaluatenew
+
+  ...
+  7. If IsConstructor(constructor) is false, throw a TypeError exception.
+  ...
+includes: [isConstructor.js]
+features: [Reflect.construct, arrow-function]
+---*/
+
+assert.sameValue(
+  isConstructor(Date.prototype.toDateString),
+  false,
+  'isConstructor(Date.prototype.toDateString) must return false'
+);
+
+assert.throws(TypeError, () => {
+  let date = new Date(Date.now()); new date.toDateString();
+}, '`let date = new Date(Date.now()); new date.toDateString()` throws TypeError');
+
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toDateString/shell.js b/js/src/tests/test262/built-ins/Date/prototype/toDateString/shell.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toDateString/shell.js
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toISOString/15.9.5.43-0-10.js b/js/src/tests/test262/built-ins/Date/prototype/toISOString/15.9.5.43-0-10.js
new file mode 100644
index 0000000000..44733d6b40
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toISOString/15.9.5.43-0-10.js
@@ -0,0 +1,29 @@
+// Copyright (c) 2012 Ecma International.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.prototype.toisostring
+description: >
+    Date.prototype.toISOString - RangeError is not thrown when value
+    of date is Date(1970, 0, -99999999, 0, 0, 0, 1), the time zone is
+    UTC(0)
+---*/
+
+var timeZoneMinutes = new Date().getTimezoneOffset() * (-1);
+var date, dateStr;
+
+if (timeZoneMinutes > 0) {
+  date = new Date(1970, 0, -99999999, 0, 0, 0, 1);
+
+  assert.throws(RangeError, function() {
+    date.toISOString();
+  });
+} else {
+  date = new Date(1970, 0, -99999999, 0, 0 + timeZoneMinutes + 60, 0, 1);
+
+  dateStr = date.toISOString();
+
+  assert.sameValue(dateStr[dateStr.length - 1], "Z");
+}
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toISOString/15.9.5.43-0-11.js b/js/src/tests/test262/built-ins/Date/prototype/toISOString/15.9.5.43-0-11.js
new file mode 100644
index 0000000000..46cf645f0b
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toISOString/15.9.5.43-0-11.js
@@ -0,0 +1,20 @@
+// Copyright (c) 2012 Ecma International.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.prototype.toisostring
+description: >
+    Date.prototype.toISOString - RangeError is not thrown when value
+    of date is Date(1970, 0, 100000001, 0, 0, 0, -1), the time zone is
+    UTC(0)
+---*/
+
+var timeZoneMinutes = new Date().getTimezoneOffset() * (-1);
+var date, dateStr;
+
+date = new Date(1970, 0, 100000001, 0, 0 + timeZoneMinutes - 60, 0, -1);
+dateStr = date.toISOString();
+
+assert.sameValue(dateStr[dateStr.length - 1], "Z", 'dateStr[dateStr.length - 1]');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toISOString/15.9.5.43-0-12.js b/js/src/tests/test262/built-ins/Date/prototype/toISOString/15.9.5.43-0-12.js
new file mode 100644
index 0000000000..68a07d2130
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toISOString/15.9.5.43-0-12.js
@@ -0,0 +1,20 @@
+// Copyright (c) 2012 Ecma International.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.prototype.toisostring
+description: >
+    Date.prototype.toISOString - RangeError is not thrown when value
+    of date is Date(1970, 0, 100000001, 0, 0, 0, 0), the time zone is
+    UTC(0)
+---*/
+
+var timeZoneMinutes = new Date().getTimezoneOffset() * (-1);
+var date, dateStr;
+
+date = new Date(1970, 0, 100000001, 0, 0 + timeZoneMinutes - 60, 0, 0);
+dateStr = date.toISOString();
+
+assert.sameValue(dateStr[dateStr.length - 1], "Z", 'dateStr[dateStr.length - 1]');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toISOString/15.9.5.43-0-13.js b/js/src/tests/test262/built-ins/Date/prototype/toISOString/15.9.5.43-0-13.js
new file mode 100644
index 0000000000..c2a7c4b128
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toISOString/15.9.5.43-0-13.js
@@ -0,0 +1,17 @@
+// Copyright (c) 2012 Ecma International.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.prototype.toisostring
+description: >
+    Date.prototype.toISOString - RangeError is thrown when value of
+    date is outside the valid range of time.
+---*/
+
+// As specified in ES5 15.9.1.14, time > 8.64e15 is not in the valid range.
+var date = new Date(8.64e15 + 1);
+assert.throws(RangeError, function() {
+  date.toISOString();
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toISOString/15.9.5.43-0-14.js b/js/src/tests/test262/built-ins/Date/prototype/toISOString/15.9.5.43-0-14.js
new file mode 100644
index 0000000000..14e06ce204
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toISOString/15.9.5.43-0-14.js
@@ -0,0 +1,16 @@
+// Copyright (c) 2012 Ecma International.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.prototype.toisostring
+description: >
+    Date.prototype.toISOString - when value of year is -Infinity
+    Date.prototype.toISOString throw the RangeError
+---*/
+
+var date = new Date(-Infinity, 1, 70, 0, 0, 0);
+assert.throws(RangeError, function() {
+  date.toISOString();
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toISOString/15.9.5.43-0-15.js b/js/src/tests/test262/built-ins/Date/prototype/toISOString/15.9.5.43-0-15.js
new file mode 100644
index 0000000000..2c35e8eb5f
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toISOString/15.9.5.43-0-15.js
@@ -0,0 +1,16 @@
+// Copyright (c) 2012 Ecma International.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.prototype.toisostring
+description: >
+    Date.prototype.toISOString - value of year is Infinity
+    Date.prototype.toISOString throw the RangeError
+---*/
+
+var date = new Date(Infinity, 1, 70, 0, 0, 0);
+assert.throws(RangeError, function() {
+  date.toISOString();
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toISOString/15.9.5.43-0-16.js b/js/src/tests/test262/built-ins/Date/prototype/toISOString/15.9.5.43-0-16.js
new file mode 100644
index 0000000000..57d3077101
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toISOString/15.9.5.43-0-16.js
@@ -0,0 +1,17 @@
+// Copyright (c) 2012 Ecma International.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.prototype.toisostring
+description: >
+    Date.prototype.toISOString - when this is a String object that
+    value format is 'YYYY-MM-DDTHH:mm:ss.sssZ'
+    Date.prototype.toISOString throw the TypeError
+---*/
+
+var date = new String("1970-01-00000:00:00.000Z");
+assert.throws(TypeError, function() {
+  Date.prototype.toISOString.call(date);
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toISOString/15.9.5.43-0-2.js b/js/src/tests/test262/built-ins/Date/prototype/toISOString/15.9.5.43-0-2.js
new file mode 100644
index 0000000000..796769d5eb
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toISOString/15.9.5.43-0-2.js
@@ -0,0 +1,13 @@
+// Copyright (c) 2012 Ecma International.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.prototype.toisostring
+description: >
+    Date.prototype.toISOString must exist as a function taking 0
+    parameters
+---*/
+
+assert.sameValue(Date.prototype.toISOString.length, 0, 'Date.prototype.toISOString.length');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toISOString/15.9.5.43-0-3.js b/js/src/tests/test262/built-ins/Date/prototype/toISOString/15.9.5.43-0-3.js
new file mode 100644
index 0000000000..d14ec10718
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toISOString/15.9.5.43-0-3.js
@@ -0,0 +1,11 @@
+// Copyright (c) 2012 Ecma International.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.prototype.toisostring
+description: Date.prototype.toISOString must exist as a function
+---*/
+
+assert.sameValue(typeof(Date.prototype.toISOString), "function", 'typeof (Date.prototype.toISOString)');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toISOString/15.9.5.43-0-4.js b/js/src/tests/test262/built-ins/Date/prototype/toISOString/15.9.5.43-0-4.js
new file mode 100644
index 0000000000..14262310a7
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toISOString/15.9.5.43-0-4.js
@@ -0,0 +1,16 @@
+// Copyright (c) 2012 Ecma International.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.prototype.toisostring
+description: >
+    Date.prototype.toISOString - format of returned string is
+    'YYYY-MM-DDTHH:mm:ss.sssZ', the time zone is UTC(0)
+---*/
+
+var date = new Date(1999, 9, 10, 10, 10, 10, 10);
+var localDate = new Date(date.getTime() - date.getTimezoneOffset() * 60000);
+
+assert.sameValue(localDate.toISOString(), "1999-10-10T10:10:10.010Z", 'localDate.toISOString()');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toISOString/15.9.5.43-0-5.js b/js/src/tests/test262/built-ins/Date/prototype/toISOString/15.9.5.43-0-5.js
new file mode 100644
index 0000000000..e8aa9da25a
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toISOString/15.9.5.43-0-5.js
@@ -0,0 +1,15 @@
+// Copyright (c) 2012 Ecma International.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.prototype.toisostring
+description: >
+    Date.prototype.toISOString - The returned string is the UTC time
+    zone(0)
+---*/
+
+var dateStr = (new Date()).toISOString();
+
+assert.sameValue(dateStr[dateStr.length - 1], "Z", 'dateStr[dateStr.length - 1]');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toISOString/15.9.5.43-0-6.js b/js/src/tests/test262/built-ins/Date/prototype/toISOString/15.9.5.43-0-6.js
new file mode 100644
index 0000000000..45a331da2d
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toISOString/15.9.5.43-0-6.js
@@ -0,0 +1,16 @@
+// Copyright (c) 2012 Ecma International.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.prototype.toisostring
+description: >
+    Date.prototype.toISOString - TypeError is thrown when this is any
+    other objects instead of Date object
+---*/
+
+
+assert.throws(TypeError, function() {
+  Date.prototype.toISOString.call([]);
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toISOString/15.9.5.43-0-7.js b/js/src/tests/test262/built-ins/Date/prototype/toISOString/15.9.5.43-0-7.js
new file mode 100644
index 0000000000..ca39dde06a
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toISOString/15.9.5.43-0-7.js
@@ -0,0 +1,16 @@
+// Copyright (c) 2012 Ecma International.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.prototype.toisostring
+description: >
+    Date.prototype.toISOString - TypeError is thrown when this is any
+    primitive values
+---*/
+
+
+assert.throws(TypeError, function() {
+  Date.prototype.toISOString.call(15);
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toISOString/15.9.5.43-0-8.js b/js/src/tests/test262/built-ins/Date/prototype/toISOString/15.9.5.43-0-8.js
new file mode 100644
index 0000000000..9ee9f39c9a
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toISOString/15.9.5.43-0-8.js
@@ -0,0 +1,24 @@
+// Copyright (c) 2012 Ecma International.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.prototype.toisostring
+description: >
+    Date.prototype.toISOString - RangeError is thrown when value of
+    date is Date(1970, 0, -99999999, 0, 0, 0, -1), the time zone is
+    UTC(0)
+---*/
+
+var timeZoneMinutes = new Date().getTimezoneOffset() * (-1);
+var date, dateStr;
+assert.throws(RangeError, function() {
+  if (timeZoneMinutes > 0) {
+    date = new Date(1970, 0, -99999999, 0, 0, 0, -1);
+  } else {
+    date = new Date(1970, 0, -99999999, 0, 0 + timeZoneMinutes - 60, 0, -1);
+  }
+
+  dateStr = date.toISOString();
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toISOString/15.9.5.43-0-9.js b/js/src/tests/test262/built-ins/Date/prototype/toISOString/15.9.5.43-0-9.js
new file mode 100644
index 0000000000..1dd2bd9875
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toISOString/15.9.5.43-0-9.js
@@ -0,0 +1,29 @@
+// Copyright (c) 2012 Ecma International.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.prototype.toisostring
+description: >
+    Date.prototype.toISOString - RangeError is not thrown when value
+    of date is Date(1970, 0, -99999999, 0, 0, 0, 0), the time zone is
+    UTC(0)
+---*/
+
+var timeZoneMinutes = new Date().getTimezoneOffset() * (-1);
+var date, dateStr;
+
+if (timeZoneMinutes > 0) {
+  date = new Date(1970, 0, -99999999, 0, 0, 0, 0);
+
+  assert.throws(RangeError, function() {
+    date.toISOString();
+  });
+} else {
+  date = new Date(1970, 0, -99999999, 0, 0 + timeZoneMinutes + 60, 0, 0);
+
+  dateStr = date.toISOString();
+
+  assert.sameValue(dateStr[dateStr.length - 1], "Z");
+}
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toISOString/browser.js b/js/src/tests/test262/built-ins/Date/prototype/toISOString/browser.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toISOString/browser.js
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toISOString/name.js b/js/src/tests/test262/built-ins/Date/prototype/toISOString/name.js
new file mode 100644
index 0000000000..1abb089310
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toISOString/name.js
@@ -0,0 +1,28 @@
+// Copyright (C) 2015 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.prototype.toisostring
+description: >
+  Date.prototype.toISOString.name is "toISOString".
+info: |
+  Date.prototype.toISOString ( )
+
+  17 ECMAScript Standard Built-in Objects:
+    Every built-in Function object, including constructors, that is not
+    identified as an anonymous function has a name property whose value
+    is a String.
+
+    Unless otherwise specified, the name property of a built-in Function
+    object, if it exists, has the attributes { [[Writable]]: false,
+    [[Enumerable]]: false, [[Configurable]]: true }.
+includes: [propertyHelper.js]
+---*/
+
+assert.sameValue(Date.prototype.toISOString.name, "toISOString");
+
+verifyNotEnumerable(Date.prototype.toISOString, "name");
+verifyNotWritable(Date.prototype.toISOString, "name");
+verifyConfigurable(Date.prototype.toISOString, "name");
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toISOString/not-a-constructor.js b/js/src/tests/test262/built-ins/Date/prototype/toISOString/not-a-constructor.js
new file mode 100644
index 0000000000..a3dd9891ec
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toISOString/not-a-constructor.js
@@ -0,0 +1,35 @@
+// Copyright (C) 2020 Rick Waldron. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-ecmascript-standard-built-in-objects
+description: >
+  Date.prototype.toISOString does not implement [[Construct]], is not new-able
+info: |
+  ECMAScript Function Objects
+
+  Built-in function objects that are not identified as constructors do not
+  implement the [[Construct]] internal method unless otherwise specified in
+  the description of a particular function.
+
+  sec-evaluatenew
+
+  ...
+  7. If IsConstructor(constructor) is false, throw a TypeError exception.
+  ...
+includes: [isConstructor.js]
+features: [Reflect.construct, arrow-function]
+---*/
+
+assert.sameValue(
+  isConstructor(Date.prototype.toISOString),
+  false,
+  'isConstructor(Date.prototype.toISOString) must return false'
+);
+
+assert.throws(TypeError, () => {
+  let date = new Date(Date.now()); new date.toISOString();
+}, '`let date = new Date(Date.now()); new date.toISOString()` throws TypeError');
+
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toISOString/shell.js b/js/src/tests/test262/built-ins/Date/prototype/toISOString/shell.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toISOString/shell.js
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toJSON/browser.js b/js/src/tests/test262/built-ins/Date/prototype/toJSON/browser.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toJSON/browser.js
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toJSON/builtin.js b/js/src/tests/test262/built-ins/Date/prototype/toJSON/builtin.js
new file mode 100644
index 0000000000..cccb5c7e2e
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toJSON/builtin.js
@@ -0,0 +1,26 @@
+// Copyright (C) 2019 Aleksey Shvayka. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.tojson
+description: >
+  Tests that Date.prototype.toJSON meets the requirements
+  for built-in objects defined by the introduction of chapter 17 of
+  the ECMAScript Language Specification.
+features: [Reflect.construct]
+---*/
+
+assert(Object.isExtensible(Date.prototype.toJSON), 'Object.isExtensible(Date.prototype.toJSON) must return true');
+assert.sameValue(typeof Date.prototype.toJSON, 'function', 'The value of `typeof Date.prototype.toJSON` is "function"');
+assert.sameValue(
+  Object.prototype.toString.call(Date.prototype.toJSON),
+  '[object Function]',
+  'Object.prototype.toString.call(Date.prototype.toJSON) must return "[object Function]"'
+);
+assert.sameValue(
+  Object.getPrototypeOf(Date.prototype.toJSON),
+  Function.prototype,
+  'Object.getPrototypeOf(Date.prototype.toJSON) must return the value of Function.prototype'
+);
+assert.sameValue(Date.prototype.toJSON.hasOwnProperty('prototype'), false, 'Date.prototype.toJSON.hasOwnProperty("prototype") must return false');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toJSON/called-as-function.js b/js/src/tests/test262/built-ins/Date/prototype/toJSON/called-as-function.js
new file mode 100644
index 0000000000..06e9775c6c
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toJSON/called-as-function.js
@@ -0,0 +1,34 @@
+// Copyright (C) 2020 Alexey Shvayka. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.prototype.tojson
+description: >
+    `this` value is resolved using strict mode semantics,
+    throwing TypeError if called as top-level function.
+info: |
+    Date.prototype.toJSON ( key )
+
+    1. Let O be ? ToObject(this value).
+
+    ToObject ( argument )
+
+    Argument Type: Undefined
+    Result: Throw a TypeError exception.
+features: [Symbol, Symbol.toPrimitive]
+---*/
+
+[Symbol.toPrimitive, "toString", "valueOf", "toISOString"].forEach(function(key) {
+    Object.defineProperty(this, key, {
+        get: function() {
+            throw new Test262Error(String(key) + " lookup should not be performed");
+        },
+    });
+}, this);
+
+var toJSON = Date.prototype.toJSON;
+assert.throws(TypeError, function() {
+    toJSON();
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toJSON/invoke-abrupt.js b/js/src/tests/test262/built-ins/Date/prototype/toJSON/invoke-abrupt.js
new file mode 100644
index 0000000000..0fba650fa8
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toJSON/invoke-abrupt.js
@@ -0,0 +1,40 @@
+// Copyright (C) 2019 Aleksey Shvayka. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.tojson
+description: >
+  Abrupt completion from GetV or Call.
+info: |
+  Date.prototype.toJSON ( key )
+
+  [...]
+  4. Return ? Invoke(O, "toISOString").
+
+  Invoke ( V, P [ , argumentsList ] )
+
+  [...]
+  3. Let func be ? GetV(V, P).
+  4. Return ? Call(func, V, argumentsList).
+---*/
+
+var abruptGet = {
+  get toISOString() {
+    throw new Test262Error();
+  },
+};
+
+assert.throws(Test262Error, function() {
+  Date.prototype.toJSON.call(abruptGet);
+});
+
+var abruptCall = {
+  toISOString() {
+    throw new Test262Error();
+  },
+};
+
+assert.throws(Test262Error, function() {
+  Date.prototype.toJSON.call(abruptCall);
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toJSON/invoke-arguments.js b/js/src/tests/test262/built-ins/Date/prototype/toJSON/invoke-arguments.js
new file mode 100644
index 0000000000..59638976cc
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toJSON/invoke-arguments.js
@@ -0,0 +1,44 @@
+// Copyright (C) 2019 Aleksey Shvayka. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.tojson
+description: >
+  toISOString is called with correct context and without arguments.
+info: |
+  Date.prototype.toJSON ( key )
+
+  [...]
+  4. Return ? Invoke(O, "toISOString").
+
+  Invoke ( V, P [ , argumentsList ] )
+
+  [...]
+  3. Let func be ? GetV(V, P).
+  4. Return ? Call(func, V, argumentsList).
+---*/
+
+var getCount = 0, getContext;
+var callCount = 0, callContext, callArguments;
+var obj = {
+  get toISOString() {
+    getCount += 1;
+    getContext = this;
+
+    return function() {
+      callCount += 1;
+      callContext = this;
+      callArguments = arguments;
+    };
+  },
+};
+
+Date.prototype.toJSON.call(obj);
+
+assert.sameValue(getCount, 1);
+assert.sameValue(getContext, obj);
+
+assert.sameValue(callCount, 1);
+assert.sameValue(callContext, obj);
+assert.sameValue(callArguments.length, 0);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toJSON/invoke-result.js b/js/src/tests/test262/built-ins/Date/prototype/toJSON/invoke-result.js
new file mode 100644
index 0000000000..2f98510e64
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toJSON/invoke-result.js
@@ -0,0 +1,31 @@
+// Copyright (C) 2019 Aleksey Shvayka. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.tojson
+description: >
+  Result of toISOString call is returned.
+info: |
+  Date.prototype.toJSON ( key )
+
+  [...]
+  4. Return ? Invoke(O, "toISOString").
+
+  Invoke ( V, P [ , argumentsList ] )
+
+  [...]
+  3. Let func be ? GetV(V, P).
+  4. Return ? Call(func, V, argumentsList).
+---*/
+
+var date = new Date();
+assert.sameValue(date.toJSON(), date.toISOString());
+
+var result = {};
+assert.sameValue(
+  Date.prototype.toJSON.call({
+    toISOString: function() { return result; },  
+  }),
+  result
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toJSON/length.js b/js/src/tests/test262/built-ins/Date/prototype/toJSON/length.js
new file mode 100644
index 0000000000..a4186d87dc
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toJSON/length.js
@@ -0,0 +1,25 @@
+// Copyright (C) 2012 Ecma International.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.tojson
+description: >
+  Date.prototype.toJSON.length is 1.
+info: |
+  Date.prototype.toJSON ( key )
+
+  ECMAScript Standard Built-in Objects
+
+  Unless otherwise specified, the length property of a built-in Function
+  object has the attributes { [[Writable]]: false, [[Enumerable]]: false,
+  [[Configurable]]: true }.
+includes: [propertyHelper.js]
+---*/
+
+verifyProperty(Date.prototype.toJSON, 'length', {
+  value: 1,
+  writable: false,
+  enumerable: false,
+  configurable: true,
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toJSON/name.js b/js/src/tests/test262/built-ins/Date/prototype/toJSON/name.js
new file mode 100644
index 0000000000..ca4abc27f7
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toJSON/name.js
@@ -0,0 +1,29 @@
+// Copyright (C) 2015 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.prototype.tojson
+description: >
+  Date.prototype.toJSON.name is "toJSON".
+info: |
+  Date.prototype.toJSON ( key )
+
+  17 ECMAScript Standard Built-in Objects:
+    Every built-in Function object, including constructors, that is not
+    identified as an anonymous function has a name property whose value
+    is a String.
+
+    Unless otherwise specified, the name property of a built-in Function
+    object, if it exists, has the attributes { [[Writable]]: false,
+    [[Enumerable]]: false, [[Configurable]]: true }.
+includes: [propertyHelper.js]
+---*/
+
+verifyProperty(Date.prototype.toJSON, 'name', {
+  value: 'toJSON',
+  writable: false,
+  enumerable: false,
+  configurable: true,
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toJSON/non-finite.js b/js/src/tests/test262/built-ins/Date/prototype/toJSON/non-finite.js
new file mode 100644
index 0000000000..f3f6753a04
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toJSON/non-finite.js
@@ -0,0 +1,29 @@
+// Copyright (C) 2019 Aleksey Shvayka. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.tojson
+description: >
+  If this value coerces to non-finite number, null is returned.
+info: |
+  Date.prototype.toJSON ( key )
+
+  [...]
+  2. Let tv be ? ToPrimitive(O, hint Number).
+  3. If Type(tv) is Number and tv is not finite, return null.
+---*/
+
+var toJSON = Date.prototype.toJSON;
+
+assert.sameValue(
+  toJSON.call({
+    get toISOString() { throw new Test262Error();  },
+    valueOf: function() { return NaN; },
+  }),
+  null
+);
+
+var num = new Number(-Infinity);
+num.toISOString = function() { throw new Test262Error(); };
+assert.sameValue(toJSON.call(num), null);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toJSON/not-a-constructor.js b/js/src/tests/test262/built-ins/Date/prototype/toJSON/not-a-constructor.js
new file mode 100644
index 0000000000..df5faff002
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toJSON/not-a-constructor.js
@@ -0,0 +1,35 @@
+// Copyright (C) 2020 Rick Waldron. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-ecmascript-standard-built-in-objects
+description: >
+  Date.prototype.toJSON does not implement [[Construct]], is not new-able
+info: |
+  ECMAScript Function Objects
+
+  Built-in function objects that are not identified as constructors do not
+  implement the [[Construct]] internal method unless otherwise specified in
+  the description of a particular function.
+
+  sec-evaluatenew
+
+  ...
+  7. If IsConstructor(constructor) is false, throw a TypeError exception.
+  ...
+includes: [isConstructor.js]
+features: [Reflect.construct, arrow-function]
+---*/
+
+assert.sameValue(
+  isConstructor(Date.prototype.toJSON),
+  false,
+  'isConstructor(Date.prototype.toJSON) must return false'
+);
+
+assert.throws(TypeError, () => {
+  let date = new Date(Date.now()); new date.toJSON();
+}, '`let date = new Date(Date.now()); new date.toJSON()` throws TypeError');
+
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toJSON/shell.js b/js/src/tests/test262/built-ins/Date/prototype/toJSON/shell.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toJSON/shell.js
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toJSON/to-object.js b/js/src/tests/test262/built-ins/Date/prototype/toJSON/to-object.js
new file mode 100644
index 0000000000..579cc102a6
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toJSON/to-object.js
@@ -0,0 +1,31 @@
+// Copyright (C) 2019 Aleksey Shvayka. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.tojson
+description: >
+  This value is coerced to an object.
+info: |
+  Date.prototype.toJSON ( key )
+
+  1. Let O be ? ToObject(this value).
+features: [Symbol]
+---*/
+
+var toJSON = Date.prototype.toJSON;
+this.toISOString = function() { return 'global'; };
+
+assert.throws(TypeError, function() {
+  toJSON.call(undefined);
+});
+
+assert.throws(TypeError, function() {
+  toJSON.call(null);
+});
+
+Number.prototype.toISOString = function() { return 'str'; };
+assert.sameValue(toJSON.call(10), 'str');
+
+Symbol.prototype.toISOString = function() { return 10; };
+assert.sameValue(toJSON.call(Symbol()), 10);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toJSON/to-primitive-abrupt.js b/js/src/tests/test262/built-ins/Date/prototype/toJSON/to-primitive-abrupt.js
new file mode 100644
index 0000000000..767d8b8240
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toJSON/to-primitive-abrupt.js
@@ -0,0 +1,58 @@
+// Copyright (C) 2019 Aleksey Shvayka. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.tojson
+description: >
+  Abrupt completion from ToPrimitive.
+info: |
+  Date.prototype.toJSON ( key )
+
+  [...]
+  2. Let tv be ? ToPrimitive(O, hint Number).
+
+  ToPrimitive ( input [ , PreferredType ] )
+
+  1. Assert: input is an ECMAScript language value.
+  2. If Type(input) is Object, then
+    [...]
+    g. Return ? OrdinaryToPrimitive(input, hint).
+
+  OrdinaryToPrimitive ( O, hint )
+
+  [...]
+  5. For each name in methodNames in List order, do
+    a. Let method be ? Get(O, name).
+    b. If IsCallable(method) is true, then
+      i. Let result be ? Call(method, O).
+      ii. If Type(result) is not Object, return result.
+  6. Throw a TypeError exception.
+---*/
+
+var toJSON = Date.prototype.toJSON;
+var getAbrupt = {
+  get valueOf() {
+    throw new Test262Error();
+  },
+};
+
+assert.throws(Test262Error, function() {
+  toJSON.call(getAbrupt);
+});
+
+var callAbrupt = {
+  toString: function() {
+    throw new Test262Error();
+  },
+};
+
+assert.throws(Test262Error, function() {
+  toJSON.call(callAbrupt);
+});
+
+var notCoercible = Object.create(null);
+
+assert.throws(TypeError, function() {
+  toJSON.call(notCoercible);
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toJSON/to-primitive-symbol.js b/js/src/tests/test262/built-ins/Date/prototype/toJSON/to-primitive-symbol.js
new file mode 100644
index 0000000000..7cf18d9060
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toJSON/to-primitive-symbol.js
@@ -0,0 +1,47 @@
+// Copyright (C) 2019 Aleksey Shvayka. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.tojson
+description: >
+  This value is coerced to primitive with Number hint (exotic @@toPrimitive).
+info: |
+  Date.prototype.toJSON ( key )
+
+  [...]
+  2. Let tv be ? ToPrimitive(O, hint Number).
+
+  ToPrimitive ( input [ , PreferredType ] )
+
+  1. Assert: input is an ECMAScript language value.
+  2. If Type(input) is Object, then
+    [...]
+    d. Let exoticToPrim be ? GetMethod(input, @@toPrimitive).
+    e. If exoticToPrim is not undefined, then
+      i. Let result be ? Call(exoticToPrim, input, « hint »).
+      ii. If Type(result) is not Object, return result.
+features: [Symbol, Symbol.toPrimitive]
+---*/
+
+var callCount = 0, _this, _arguments;
+var result = new Boolean(false);
+
+var obj = {
+  toISOString: function() { return result; },
+  toString: function() { throw new Test262Error('should not be called'); },
+  valueOf: function() { throw new Test262Error('should not be called'); },
+};
+
+obj[Symbol.toPrimitive] = function() {
+  callCount += 1;
+  _this = this;
+  _arguments = arguments;
+  return 3.14;
+};
+
+assert.sameValue(Date.prototype.toJSON.call(obj), result);
+assert.sameValue(callCount, 1);
+assert.sameValue(_this, obj);
+assert.sameValue(_arguments[0], 'number');
+assert.sameValue(_arguments.length, 1);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toJSON/to-primitive-value-of.js b/js/src/tests/test262/built-ins/Date/prototype/toJSON/to-primitive-value-of.js
new file mode 100644
index 0000000000..f8cf0c5f19
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toJSON/to-primitive-value-of.js
@@ -0,0 +1,48 @@
+// Copyright (C) 2019 Aleksey Shvayka. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date.prototype.tojson
+description: >
+  This value is coerced to primitive with Number hint (OrdinaryToPrimitive).
+info: |
+  Date.prototype.toJSON ( key )
+
+  [...]
+  2. Let tv be ? ToPrimitive(O, hint Number).
+
+  ToPrimitive ( input [ , PreferredType ] )
+
+  1. Assert: input is an ECMAScript language value.
+  2. If Type(input) is Object, then
+    [...]
+    g. Return ? OrdinaryToPrimitive(input, hint).
+
+  OrdinaryToPrimitive ( O, hint )
+
+  [...]
+  5. For each name in methodNames in List order, do
+    a. Let method be ? Get(O, name).
+    b. If IsCallable(method) is true, then
+      i. Let result be ? Call(method, O).
+      ii. If Type(result) is not Object, return result.
+---*/
+
+var callCount = 0, _this, _arguments;
+var result = [];
+var obj = {
+  toISOString: function() { return result; },
+  toString: function() { throw new Test262Error('should not be called'); },
+  valueOf: function() {
+    callCount += 1;
+    _this = this;
+    _arguments = arguments;
+    return 'NaN';
+  },
+};
+
+assert.sameValue(Date.prototype.toJSON.call(obj), result);
+assert.sameValue(callCount, 1);
+assert.sameValue(_this, obj);
+assert.sameValue(_arguments.length, 0);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toLocaleDateString/S15.9.5.6_A1_T1.js b/js/src/tests/test262/built-ins/Date/prototype/toLocaleDateString/S15.9.5.6_A1_T1.js
new file mode 100644
index 0000000000..4ecf0d3029
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toLocaleDateString/S15.9.5.6_A1_T1.js
@@ -0,0 +1,27 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype property "toLocaleDateString" has { DontEnum }
+    attributes
+esid: sec-date.prototype.tolocaledatestring
+description: Checking absence of ReadOnly attribute
+---*/
+
+var x = Date.prototype.toLocaleDateString;
+if (x === 1) {
+  Date.prototype.toLocaleDateString = 2;
+} else {
+  Date.prototype.toLocaleDateString = 1;
+}
+
+assert.notSameValue(
+  Date.prototype.toLocaleDateString,
+  x,
+  'The value of Date.prototype.toLocaleDateString is expected to not equal the value of `x`'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toLocaleDateString/S15.9.5.6_A1_T2.js b/js/src/tests/test262/built-ins/Date/prototype/toLocaleDateString/S15.9.5.6_A1_T2.js
new file mode 100644
index 0000000000..99ff7abca0
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toLocaleDateString/S15.9.5.6_A1_T2.js
@@ -0,0 +1,24 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype property "toLocaleDateString" has { DontEnum }
+    attributes
+esid: sec-date.prototype.tolocaledatestring
+description: Checking absence of DontDelete attribute
+---*/
+assert.notSameValue(
+  delete Date.prototype.toLocaleDateString,
+  false,
+  'The value of delete Date.prototype.toLocaleDateString is not false'
+);
+
+assert(
+  !Date.prototype.hasOwnProperty('toLocaleDateString'),
+  'The value of !Date.prototype.hasOwnProperty(\'toLocaleDateString\') is expected to be true'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toLocaleDateString/S15.9.5.6_A1_T3.js b/js/src/tests/test262/built-ins/Date/prototype/toLocaleDateString/S15.9.5.6_A1_T3.js
new file mode 100644
index 0000000000..20a586e47f
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toLocaleDateString/S15.9.5.6_A1_T3.js
@@ -0,0 +1,22 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype property "toLocaleDateString" has { DontEnum }
+    attributes
+esid: sec-date.prototype.tolocaledatestring
+description: Checking DontEnum attribute
+---*/
+assert(
+  !Date.prototype.propertyIsEnumerable('toLocaleDateString'),
+  'The value of !Date.prototype.propertyIsEnumerable(\'toLocaleDateString\') is expected to be true'
+);
+
+for (var x in Date.prototype) {
+  assert.notSameValue(x, "toLocaleDateString", 'The value of x is not "toLocaleDateString"');
+}
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toLocaleDateString/S15.9.5.6_A2_T1.js b/js/src/tests/test262/built-ins/Date/prototype/toLocaleDateString/S15.9.5.6_A2_T1.js
new file mode 100644
index 0000000000..283d863bf4
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toLocaleDateString/S15.9.5.6_A2_T1.js
@@ -0,0 +1,21 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The "length" property of the "toLocaleDateString" is 0
+esid: sec-date.prototype.tolocaledatestring
+description: The "length" property of the "toLocaleDateString" is 0
+---*/
+assert.sameValue(
+  Date.prototype.toLocaleDateString.hasOwnProperty("length"),
+  true,
+  'Date.prototype.toLocaleDateString.hasOwnProperty("length") must return true'
+);
+
+assert.sameValue(
+  Date.prototype.toLocaleDateString.length,
+  0,
+  'The value of Date.prototype.toLocaleDateString.length is expected to be 0'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toLocaleDateString/S15.9.5.6_A3_T1.js b/js/src/tests/test262/built-ins/Date/prototype/toLocaleDateString/S15.9.5.6_A3_T1.js
new file mode 100644
index 0000000000..3df27ab673
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toLocaleDateString/S15.9.5.6_A3_T1.js
@@ -0,0 +1,24 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype.toLocaleDateString property "length" has { ReadOnly,
+    DontDelete, DontEnum } attributes
+esid: sec-date.prototype.tolocaledatestring
+description: Checking ReadOnly attribute
+includes: [propertyHelper.js]
+---*/
+
+var x = Date.prototype.toLocaleDateString.length;
+verifyNotWritable(Date.prototype.toLocaleDateString, "length", null, 1);
+
+assert.sameValue(
+  Date.prototype.toLocaleDateString.length,
+  x,
+  'The value of Date.prototype.toLocaleDateString.length is expected to equal the value of x'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toLocaleDateString/S15.9.5.6_A3_T2.js b/js/src/tests/test262/built-ins/Date/prototype/toLocaleDateString/S15.9.5.6_A3_T2.js
new file mode 100644
index 0000000000..5339b513a2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toLocaleDateString/S15.9.5.6_A3_T2.js
@@ -0,0 +1,24 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype.toLocaleDateString property "length" has { ReadOnly, !
+    DontDelete, DontEnum } attributes
+esid: sec-date.prototype.tolocaledatestring
+description: Checking DontDelete attribute
+---*/
+assert.sameValue(
+  delete Date.prototype.toLocaleDateString.length,
+  true,
+  'The value of `delete Date.prototype.toLocaleDateString.length` is expected to be true'
+);
+
+assert(
+  !Date.prototype.toLocaleDateString.hasOwnProperty('length'),
+  'The value of !Date.prototype.toLocaleDateString.hasOwnProperty(\'length\') is expected to be true'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toLocaleDateString/S15.9.5.6_A3_T3.js b/js/src/tests/test262/built-ins/Date/prototype/toLocaleDateString/S15.9.5.6_A3_T3.js
new file mode 100644
index 0000000000..23f2fe919d
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toLocaleDateString/S15.9.5.6_A3_T3.js
@@ -0,0 +1,22 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype.toLocaleDateString property "length" has { ReadOnly,
+    DontDelete, DontEnum } attributes
+esid: sec-date.prototype.tolocaledatestring
+description: Checking DontEnum attribute
+---*/
+assert(
+  !Date.prototype.toLocaleDateString.propertyIsEnumerable('length'),
+  'The value of !Date.prototype.toLocaleDateString.propertyIsEnumerable(\'length\') is expected to be true'
+);
+
+for (var x in Date.prototype.toLocaleDateString) {
+  assert.notSameValue(x, "length", 'The value of x is not "length"');
+}
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toLocaleDateString/browser.js b/js/src/tests/test262/built-ins/Date/prototype/toLocaleDateString/browser.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toLocaleDateString/browser.js
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toLocaleDateString/name.js b/js/src/tests/test262/built-ins/Date/prototype/toLocaleDateString/name.js
new file mode 100644
index 0000000000..0f3981a565
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toLocaleDateString/name.js
@@ -0,0 +1,28 @@
+// Copyright (C) 2015 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.prototype.tolocaledatestring
+description: >
+  Date.prototype.toLocaleDateString.name is "toLocaleDateString".
+info: |
+  Date.prototype.toLocaleDateString ( [ reserved1 [ , reserved2 ] ] )
+
+  17 ECMAScript Standard Built-in Objects:
+    Every built-in Function object, including constructors, that is not
+    identified as an anonymous function has a name property whose value
+    is a String.
+
+    Unless otherwise specified, the name property of a built-in Function
+    object, if it exists, has the attributes { [[Writable]]: false,
+    [[Enumerable]]: false, [[Configurable]]: true }.
+includes: [propertyHelper.js]
+---*/
+
+assert.sameValue(Date.prototype.toLocaleDateString.name, "toLocaleDateString");
+
+verifyNotEnumerable(Date.prototype.toLocaleDateString, "name");
+verifyNotWritable(Date.prototype.toLocaleDateString, "name");
+verifyConfigurable(Date.prototype.toLocaleDateString, "name");
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toLocaleDateString/not-a-constructor.js b/js/src/tests/test262/built-ins/Date/prototype/toLocaleDateString/not-a-constructor.js
new file mode 100644
index 0000000000..45b56d70ed
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toLocaleDateString/not-a-constructor.js
@@ -0,0 +1,35 @@
+// Copyright (C) 2020 Rick Waldron. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-ecmascript-standard-built-in-objects
+description: >
+  Date.prototype.toLocaleDateString does not implement [[Construct]], is not new-able
+info: |
+  ECMAScript Function Objects
+
+  Built-in function objects that are not identified as constructors do not
+  implement the [[Construct]] internal method unless otherwise specified in
+  the description of a particular function.
+
+  sec-evaluatenew
+
+  ...
+  7. If IsConstructor(constructor) is false, throw a TypeError exception.
+  ...
+includes: [isConstructor.js]
+features: [Reflect.construct, arrow-function]
+---*/
+
+assert.sameValue(
+  isConstructor(Date.prototype.toLocaleDateString),
+  false,
+  'isConstructor(Date.prototype.toLocaleDateString) must return false'
+);
+
+assert.throws(TypeError, () => {
+  let date = new Date(Date.now()); new date.toLocaleDateString();
+}, '`let date = new Date(Date.now()); new date.toLocaleDateString()` throws TypeError');
+
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toLocaleDateString/shell.js b/js/src/tests/test262/built-ins/Date/prototype/toLocaleDateString/shell.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toLocaleDateString/shell.js
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toLocaleString/S15.9.5.5_A1_T1.js b/js/src/tests/test262/built-ins/Date/prototype/toLocaleString/S15.9.5.5_A1_T1.js
new file mode 100644
index 0000000000..462d53f26b
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toLocaleString/S15.9.5.5_A1_T1.js
@@ -0,0 +1,25 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype property "toLocaleString" has { DontEnum } attributes
+esid: sec-date.prototype.tolocalestring
+description: Checking absence of ReadOnly attribute
+---*/
+
+var x = Date.prototype.toLocaleString;
+if (x === 1) {
+  Date.prototype.toLocaleString = 2;
+} else {
+  Date.prototype.toLocaleString = 1;
+}
+
+assert.notSameValue(
+  Date.prototype.toLocaleString,
+  x,
+  'The value of Date.prototype.toLocaleString is expected to not equal the value of `x`'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toLocaleString/S15.9.5.5_A1_T2.js b/js/src/tests/test262/built-ins/Date/prototype/toLocaleString/S15.9.5.5_A1_T2.js
new file mode 100644
index 0000000000..7048a1c8c4
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toLocaleString/S15.9.5.5_A1_T2.js
@@ -0,0 +1,23 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype property "toLocaleString" has { DontEnum } attributes
+esid: sec-date.prototype.tolocalestring
+description: Checking absence of DontDelete attribute
+---*/
+
+assert.notSameValue(
+  delete Date.prototype.toLocaleString,
+  false,
+  'The value of delete Date.prototype.toLocaleString is not false'
+);
+
+assert(
+  !Date.prototype.hasOwnProperty('toLocaleString'),
+  'The value of !Date.prototype.hasOwnProperty(\'toLocaleString\') is expected to be true'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toLocaleString/S15.9.5.5_A1_T3.js b/js/src/tests/test262/built-ins/Date/prototype/toLocaleString/S15.9.5.5_A1_T3.js
new file mode 100644
index 0000000000..8cd0d560cc
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toLocaleString/S15.9.5.5_A1_T3.js
@@ -0,0 +1,20 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype property "toLocaleString" has { DontEnum } attributes
+esid: sec-date.prototype.tolocalestring
+description: Checking DontEnum attribute
+---*/
+assert(
+  !Date.prototype.propertyIsEnumerable('toLocaleString'),
+  'The value of !Date.prototype.propertyIsEnumerable(\'toLocaleString\') is expected to be true'
+);
+
+for (var x in Date.prototype) {
+  assert.notSameValue(x, "toLocaleString", 'The value of x is not "toLocaleString"');
+}
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toLocaleString/S15.9.5.5_A2_T1.js b/js/src/tests/test262/built-ins/Date/prototype/toLocaleString/S15.9.5.5_A2_T1.js
new file mode 100644
index 0000000000..a99ec98052
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toLocaleString/S15.9.5.5_A2_T1.js
@@ -0,0 +1,22 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The "length" property of the "toLocaleString" is 0
+esid: sec-date.prototype.tolocalestring
+description: The "length" property of the "toLocaleString" is 0
+---*/
+
+assert.sameValue(
+  Date.prototype.toLocaleString.hasOwnProperty("length"),
+  true,
+  'Date.prototype.toLocaleString.hasOwnProperty("length") must return true'
+);
+
+assert.sameValue(
+  Date.prototype.toLocaleString.length,
+  0,
+  'The value of Date.prototype.toLocaleString.length is expected to be 0'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toLocaleString/S15.9.5.5_A3_T1.js b/js/src/tests/test262/built-ins/Date/prototype/toLocaleString/S15.9.5.5_A3_T1.js
new file mode 100644
index 0000000000..4537937e8b
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toLocaleString/S15.9.5.5_A3_T1.js
@@ -0,0 +1,24 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype.toLocaleString property "length" has { ReadOnly,
+    DontDelete, DontEnum } attributes
+esid: sec-date.prototype.tolocalestring
+description: Checking ReadOnly attribute
+includes: [propertyHelper.js]
+---*/
+
+var x = Date.prototype.toLocaleString.length;
+verifyNotWritable(Date.prototype.toLocaleString, "length", null, 1);
+
+assert.sameValue(
+  Date.prototype.toLocaleString.length,
+  x,
+  'The value of Date.prototype.toLocaleString.length is expected to equal the value of x'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toLocaleString/S15.9.5.5_A3_T2.js b/js/src/tests/test262/built-ins/Date/prototype/toLocaleString/S15.9.5.5_A3_T2.js
new file mode 100644
index 0000000000..29166bae06
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toLocaleString/S15.9.5.5_A3_T2.js
@@ -0,0 +1,25 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype.toLocaleString property "length" has { ReadOnly, !
+    DontDelete, DontEnum } attributes
+esid: sec-date.prototype.tolocalestring
+description: Checking DontDelete attribute
+---*/
+
+assert.sameValue(
+  delete Date.prototype.toLocaleString.length,
+  true,
+  'The value of `delete Date.prototype.toLocaleString.length` is expected to be true'
+);
+
+assert(
+  !Date.prototype.toLocaleString.hasOwnProperty('length'),
+  'The value of !Date.prototype.toLocaleString.hasOwnProperty(\'length\') is expected to be true'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toLocaleString/S15.9.5.5_A3_T3.js b/js/src/tests/test262/built-ins/Date/prototype/toLocaleString/S15.9.5.5_A3_T3.js
new file mode 100644
index 0000000000..af48b9388e
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toLocaleString/S15.9.5.5_A3_T3.js
@@ -0,0 +1,22 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype.toLocaleString property "length" has { ReadOnly,
+    DontDelete, DontEnum } attributes
+esid: sec-date.prototype.tolocalestring
+description: Checking DontEnum attribute
+---*/
+assert(
+  !Date.prototype.toLocaleString.propertyIsEnumerable('length'),
+  'The value of !Date.prototype.toLocaleString.propertyIsEnumerable(\'length\') is expected to be true'
+);
+
+for (var x in Date.prototype.toLocaleString) {
+  assert.notSameValue(x, "length", 'The value of x is not "length"');
+}
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toLocaleString/browser.js b/js/src/tests/test262/built-ins/Date/prototype/toLocaleString/browser.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toLocaleString/browser.js
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toLocaleString/name.js b/js/src/tests/test262/built-ins/Date/prototype/toLocaleString/name.js
new file mode 100644
index 0000000000..1c2d1ad584
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toLocaleString/name.js
@@ -0,0 +1,28 @@
+// Copyright (C) 2015 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.prototype.tolocalestring
+description: >
+  Date.prototype.toLocaleString.name is "toLocaleString".
+info: |
+  Date.prototype.toLocaleString ( [ reserved1 [ , reserved2 ] ] )
+
+  17 ECMAScript Standard Built-in Objects:
+    Every built-in Function object, including constructors, that is not
+    identified as an anonymous function has a name property whose value
+    is a String.
+
+    Unless otherwise specified, the name property of a built-in Function
+    object, if it exists, has the attributes { [[Writable]]: false,
+    [[Enumerable]]: false, [[Configurable]]: true }.
+includes: [propertyHelper.js]
+---*/
+
+assert.sameValue(Date.prototype.toLocaleString.name, "toLocaleString");
+
+verifyNotEnumerable(Date.prototype.toLocaleString, "name");
+verifyNotWritable(Date.prototype.toLocaleString, "name");
+verifyConfigurable(Date.prototype.toLocaleString, "name");
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toLocaleString/not-a-constructor.js b/js/src/tests/test262/built-ins/Date/prototype/toLocaleString/not-a-constructor.js
new file mode 100644
index 0000000000..4af86cd1e6
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toLocaleString/not-a-constructor.js
@@ -0,0 +1,35 @@
+// Copyright (C) 2020 Rick Waldron. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-ecmascript-standard-built-in-objects
+description: >
+  Date.prototype.toLocaleString does not implement [[Construct]], is not new-able
+info: |
+  ECMAScript Function Objects
+
+  Built-in function objects that are not identified as constructors do not
+  implement the [[Construct]] internal method unless otherwise specified in
+  the description of a particular function.
+
+  sec-evaluatenew
+
+  ...
+  7. If IsConstructor(constructor) is false, throw a TypeError exception.
+  ...
+includes: [isConstructor.js]
+features: [Reflect.construct, arrow-function]
+---*/
+
+assert.sameValue(
+  isConstructor(Date.prototype.toLocaleString),
+  false,
+  'isConstructor(Date.prototype.toLocaleString) must return false'
+);
+
+assert.throws(TypeError, () => {
+  let date = new Date(Date.now()); new date.toLocaleString();
+}, '`let date = new Date(Date.now()); new date.toLocaleString()` throws TypeError');
+
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toLocaleString/shell.js b/js/src/tests/test262/built-ins/Date/prototype/toLocaleString/shell.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toLocaleString/shell.js
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toLocaleTimeString/S15.9.5.7_A1_T1.js b/js/src/tests/test262/built-ins/Date/prototype/toLocaleTimeString/S15.9.5.7_A1_T1.js
new file mode 100644
index 0000000000..21dd5d4411
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toLocaleTimeString/S15.9.5.7_A1_T1.js
@@ -0,0 +1,27 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype property "toLocaleTimeString" has { DontEnum }
+    attributes
+esid: sec-date.prototype.tolocaletimestring
+description: Checking absence of ReadOnly attribute
+---*/
+
+var x = Date.prototype.toLocaleTimeString;
+if (x === 1) {
+  Date.prototype.toLocaleTimeString = 2;
+} else {
+  Date.prototype.toLocaleTimeString = 1;
+}
+
+assert.notSameValue(
+  Date.prototype.toLocaleTimeString,
+  x,
+  'The value of Date.prototype.toLocaleTimeString is expected to not equal the value of `x`'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toLocaleTimeString/S15.9.5.7_A1_T2.js b/js/src/tests/test262/built-ins/Date/prototype/toLocaleTimeString/S15.9.5.7_A1_T2.js
new file mode 100644
index 0000000000..3069df6de6
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toLocaleTimeString/S15.9.5.7_A1_T2.js
@@ -0,0 +1,25 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype property "toLocaleTimeString" has { DontEnum }
+    attributes
+esid: sec-date.prototype.tolocaletimestring
+description: Checking absence of DontDelete attribute
+---*/
+
+assert.notSameValue(
+  delete Date.prototype.toLocaleTimeString,
+  false,
+  'The value of delete Date.prototype.toLocaleTimeString is not false'
+);
+
+assert(
+  !Date.prototype.hasOwnProperty('toLocaleTimeString'),
+  'The value of !Date.prototype.hasOwnProperty(\'toLocaleTimeString\') is expected to be true'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toLocaleTimeString/S15.9.5.7_A1_T3.js b/js/src/tests/test262/built-ins/Date/prototype/toLocaleTimeString/S15.9.5.7_A1_T3.js
new file mode 100644
index 0000000000..ece77abd00
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toLocaleTimeString/S15.9.5.7_A1_T3.js
@@ -0,0 +1,22 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype property "toLocaleTimeString" has { DontEnum }
+    attributes
+esid: sec-date.prototype.tolocaletimestring
+description: Checking DontEnum attribute
+---*/
+assert(
+  !Date.prototype.propertyIsEnumerable('toLocaleTimeString'),
+  'The value of !Date.prototype.propertyIsEnumerable(\'toLocaleTimeString\') is expected to be true'
+);
+
+for (var x in Date.prototype) {
+  assert.notSameValue(x, "toLocaleTimeString", 'The value of x is not "toLocaleTimeString"');
+}
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toLocaleTimeString/S15.9.5.7_A2_T1.js b/js/src/tests/test262/built-ins/Date/prototype/toLocaleTimeString/S15.9.5.7_A2_T1.js
new file mode 100644
index 0000000000..9db46eb034
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toLocaleTimeString/S15.9.5.7_A2_T1.js
@@ -0,0 +1,22 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The "length" property of the "toLocaleTimeString" is 0
+esid: sec-date.prototype.tolocaletimestring
+description: The "length" property of the "toLocaleTimeString" is 0
+---*/
+
+assert.sameValue(
+  Date.prototype.toLocaleTimeString.hasOwnProperty("length"),
+  true,
+  'Date.prototype.toLocaleTimeString.hasOwnProperty("length") must return true'
+);
+
+assert.sameValue(
+  Date.prototype.toLocaleTimeString.length,
+  0,
+  'The value of Date.prototype.toLocaleTimeString.length is expected to be 0'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toLocaleTimeString/S15.9.5.7_A3_T1.js b/js/src/tests/test262/built-ins/Date/prototype/toLocaleTimeString/S15.9.5.7_A3_T1.js
new file mode 100644
index 0000000000..d0f4fbabc3
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toLocaleTimeString/S15.9.5.7_A3_T1.js
@@ -0,0 +1,24 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype.toLocaleTimeString property "length" has { ReadOnly,
+    DontDelete, DontEnum } attributes
+esid: sec-date.prototype.tolocaletimestring
+description: Checking ReadOnly attribute
+includes: [propertyHelper.js]
+---*/
+
+var x = Date.prototype.toLocaleTimeString.length;
+verifyNotWritable(Date.prototype.toLocaleTimeString, "length", null, 1);
+
+assert.sameValue(
+  Date.prototype.toLocaleTimeString.length,
+  x,
+  'The value of Date.prototype.toLocaleTimeString.length is expected to equal the value of x'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toLocaleTimeString/S15.9.5.7_A3_T2.js b/js/src/tests/test262/built-ins/Date/prototype/toLocaleTimeString/S15.9.5.7_A3_T2.js
new file mode 100644
index 0000000000..5137a41104
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toLocaleTimeString/S15.9.5.7_A3_T2.js
@@ -0,0 +1,25 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype.toLocaleTimeString property "length" has { ReadOnly, !
+    DontDelete, DontEnum } attributes
+esid: sec-date.prototype.tolocaletimestring
+description: Checking DontDelete attribute
+---*/
+
+assert.sameValue(
+  delete Date.prototype.toLocaleTimeString.length,
+  true,
+  'The value of `delete Date.prototype.toLocaleTimeString.length` is expected to be true'
+);
+
+assert(
+  !Date.prototype.toLocaleTimeString.hasOwnProperty('length'),
+  'The value of !Date.prototype.toLocaleTimeString.hasOwnProperty(\'length\') is expected to be true'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toLocaleTimeString/S15.9.5.7_A3_T3.js b/js/src/tests/test262/built-ins/Date/prototype/toLocaleTimeString/S15.9.5.7_A3_T3.js
new file mode 100644
index 0000000000..8e03eff9be
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toLocaleTimeString/S15.9.5.7_A3_T3.js
@@ -0,0 +1,22 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype.toLocaleTimeString property "length" has { ReadOnly,
+    DontDelete, DontEnum } attributes
+esid: sec-date.prototype.tolocaletimestring
+description: Checking DontEnum attribute
+---*/
+assert(
+  !Date.prototype.toLocaleTimeString.propertyIsEnumerable('length'),
+  'The value of !Date.prototype.toLocaleTimeString.propertyIsEnumerable(\'length\') is expected to be true'
+);
+
+for (var x in Date.prototype.toLocaleTimeString) {
+  assert.notSameValue(x, "length", 'The value of x is not "length"');
+}
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toLocaleTimeString/browser.js b/js/src/tests/test262/built-ins/Date/prototype/toLocaleTimeString/browser.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toLocaleTimeString/browser.js
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toLocaleTimeString/name.js b/js/src/tests/test262/built-ins/Date/prototype/toLocaleTimeString/name.js
new file mode 100644
index 0000000000..260baf8b5d
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toLocaleTimeString/name.js
@@ -0,0 +1,28 @@
+// Copyright (C) 2015 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.prototype.tolocaletimestring
+description: >
+  Date.prototype.toLocaleTimeString.name is "toLocaleTimeString".
+info: |
+  Date.prototype.toLocaleTimeString ( [ reserved1 [ , reserved2 ] ] )
+
+  17 ECMAScript Standard Built-in Objects:
+    Every built-in Function object, including constructors, that is not
+    identified as an anonymous function has a name property whose value
+    is a String.
+
+    Unless otherwise specified, the name property of a built-in Function
+    object, if it exists, has the attributes { [[Writable]]: false,
+    [[Enumerable]]: false, [[Configurable]]: true }.
+includes: [propertyHelper.js]
+---*/
+
+assert.sameValue(Date.prototype.toLocaleTimeString.name, "toLocaleTimeString");
+
+verifyNotEnumerable(Date.prototype.toLocaleTimeString, "name");
+verifyNotWritable(Date.prototype.toLocaleTimeString, "name");
+verifyConfigurable(Date.prototype.toLocaleTimeString, "name");
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toLocaleTimeString/not-a-constructor.js b/js/src/tests/test262/built-ins/Date/prototype/toLocaleTimeString/not-a-constructor.js
new file mode 100644
index 0000000000..6f648bb789
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toLocaleTimeString/not-a-constructor.js
@@ -0,0 +1,35 @@
+// Copyright (C) 2020 Rick Waldron. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-ecmascript-standard-built-in-objects
+description: >
+  Date.prototype.toLocaleTimeString does not implement [[Construct]], is not new-able
+info: |
+  ECMAScript Function Objects
+
+  Built-in function objects that are not identified as constructors do not
+  implement the [[Construct]] internal method unless otherwise specified in
+  the description of a particular function.
+
+  sec-evaluatenew
+
+  ...
+  7. If IsConstructor(constructor) is false, throw a TypeError exception.
+  ...
+includes: [isConstructor.js]
+features: [Reflect.construct, arrow-function]
+---*/
+
+assert.sameValue(
+  isConstructor(Date.prototype.toLocaleTimeString),
+  false,
+  'isConstructor(Date.prototype.toLocaleTimeString) must return false'
+);
+
+assert.throws(TypeError, () => {
+  let date = new Date(Date.now()); new date.toLocaleTimeString();
+}, '`let date = new Date(Date.now()); new date.toLocaleTimeString()` throws TypeError');
+
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toLocaleTimeString/shell.js b/js/src/tests/test262/built-ins/Date/prototype/toLocaleTimeString/shell.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toLocaleTimeString/shell.js
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toString/S15.9.5.2_A1_T1.js b/js/src/tests/test262/built-ins/Date/prototype/toString/S15.9.5.2_A1_T1.js
new file mode 100644
index 0000000000..6612e3a747
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toString/S15.9.5.2_A1_T1.js
@@ -0,0 +1,25 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype property "toString" has { DontEnum } attributes
+esid: sec-date.prototype.tostring
+description: Checking absence of ReadOnly attribute
+---*/
+
+var x = Date.prototype.toString;
+if (x === 1) {
+  Date.prototype.toString = 2;
+} else {
+  Date.prototype.toString = 1;
+}
+
+assert.notSameValue(
+  Date.prototype.toString,
+  x,
+  'The value of Date.prototype.toString is expected to not equal the value of `x`'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toString/S15.9.5.2_A1_T2.js b/js/src/tests/test262/built-ins/Date/prototype/toString/S15.9.5.2_A1_T2.js
new file mode 100644
index 0000000000..0395c2e111
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toString/S15.9.5.2_A1_T2.js
@@ -0,0 +1,18 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype property "toString" has { DontEnum } attributes
+esid: sec-date.prototype.tostring
+description: Checking absence of DontDelete attribute
+---*/
+
+assert.notSameValue(delete Date.prototype.toString, false, 'The value of delete Date.prototype.toString is not false');
+assert(
+  !Date.prototype.hasOwnProperty('toString'),
+  'The value of !Date.prototype.hasOwnProperty(\'toString\') is expected to be true'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toString/S15.9.5.2_A1_T3.js b/js/src/tests/test262/built-ins/Date/prototype/toString/S15.9.5.2_A1_T3.js
new file mode 100644
index 0000000000..494bbdb2ac
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toString/S15.9.5.2_A1_T3.js
@@ -0,0 +1,20 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype property "toString" has { DontEnum } attributes
+esid: sec-date.prototype.tostring
+description: Checking DontEnum attribute
+---*/
+assert(
+  !Date.prototype.propertyIsEnumerable('toString'),
+  'The value of !Date.prototype.propertyIsEnumerable(\'toString\') is expected to be true'
+);
+
+for (var x in Date.prototype) {
+  assert.notSameValue(x, "toString", 'The value of x is not "toString"');
+}
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toString/S15.9.5.2_A2_T1.js b/js/src/tests/test262/built-ins/Date/prototype/toString/S15.9.5.2_A2_T1.js
new file mode 100644
index 0000000000..6139039893
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toString/S15.9.5.2_A2_T1.js
@@ -0,0 +1,18 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The "length" property of the "toString" is 0
+esid: sec-date.prototype.tostring
+description: The "length" property of the "toString" is 0
+---*/
+
+assert.sameValue(
+  Date.prototype.toString.hasOwnProperty("length"),
+  true,
+  'Date.prototype.toString.hasOwnProperty("length") must return true'
+);
+
+assert.sameValue(Date.prototype.toString.length, 0, 'The value of Date.prototype.toString.length is expected to be 0');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toString/S15.9.5.2_A3_T1.js b/js/src/tests/test262/built-ins/Date/prototype/toString/S15.9.5.2_A3_T1.js
new file mode 100644
index 0000000000..f8505716f7
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toString/S15.9.5.2_A3_T1.js
@@ -0,0 +1,24 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype.toString property "length" has { ReadOnly, DontDelete,
+    DontEnum } attributes
+esid: sec-date.prototype.tostring
+description: Checking ReadOnly attribute
+includes: [propertyHelper.js]
+---*/
+
+var x = Date.prototype.toString.length;
+verifyNotWritable(Date.prototype.toString, "length", null, 1);
+
+assert.sameValue(
+  Date.prototype.toString.length,
+  x,
+  'The value of Date.prototype.toString.length is expected to equal the value of x'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toString/S15.9.5.2_A3_T2.js b/js/src/tests/test262/built-ins/Date/prototype/toString/S15.9.5.2_A3_T2.js
new file mode 100644
index 0000000000..d265d9f4c3
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toString/S15.9.5.2_A3_T2.js
@@ -0,0 +1,25 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype.toString property "length" has { ReadOnly, !
+    DontDelete, DontEnum } attributes
+esid: sec-date.prototype.tostring
+description: Checking DontDelete attribute
+---*/
+
+assert.sameValue(
+  delete Date.prototype.toString.length,
+  true,
+  'The value of `delete Date.prototype.toString.length` is expected to be true'
+);
+
+assert(
+  !Date.prototype.toString.hasOwnProperty('length'),
+  'The value of !Date.prototype.toString.hasOwnProperty(\'length\') is expected to be true'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toString/S15.9.5.2_A3_T3.js b/js/src/tests/test262/built-ins/Date/prototype/toString/S15.9.5.2_A3_T3.js
new file mode 100644
index 0000000000..d4b54c6f79
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toString/S15.9.5.2_A3_T3.js
@@ -0,0 +1,22 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype.toString property "length" has { ReadOnly, DontDelete,
+    DontEnum } attributes
+esid: sec-date.prototype.tostring
+description: Checking DontEnum attribute
+---*/
+assert(
+  !Date.prototype.toString.propertyIsEnumerable('length'),
+  'The value of !Date.prototype.toString.propertyIsEnumerable(\'length\') is expected to be true'
+);
+
+for (var x in Date.prototype.toString) {
+  assert.notSameValue(x, "length", 'The value of x is not "length"');
+}
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toString/browser.js b/js/src/tests/test262/built-ins/Date/prototype/toString/browser.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toString/browser.js
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toString/format.js b/js/src/tests/test262/built-ins/Date/prototype/toString/format.js
new file mode 100644
index 0000000000..70aa3efe27
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toString/format.js
@@ -0,0 +1,22 @@
+// Copyright (C) 2017 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.prototype.tostring
+description: Test the format of the time from toString
+info: |
+  Runtime Semantics: ToDateString( _tv_ )
+
+  4. Return the String value formed by concatenating DateString(_t_), `" "`, TimeString(_t_), and TimeZoneString(_tv_).
+
+---*/
+
+let stringRegExp = /^(Sun|Mon|Tue|Wed|Thu|Fri|Sat) (Jan|Feb|Mar|Apr|May|Jun|Jul|Aug|Sep|Oct|Nov|Dec) [0-9]{2} [0-9]{4} [0-9]{2}:[0-9]{2}:[0-9]{2} GMT[+-][0-9]{4}( \(.+\))?$/
+let match = stringRegExp.exec(new Date().toString());
+assert.notSameValue(null, match);
+
+// Years are padded to the left with zeroes
+match = stringRegExp.exec(new Date('0020-01-01T00:00:00Z').toString());
+assert.notSameValue(null, match);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toString/invalid-date.js b/js/src/tests/test262/built-ins/Date/prototype/toString/invalid-date.js
new file mode 100644
index 0000000000..9d0373a571
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toString/invalid-date.js
@@ -0,0 +1,17 @@
+// Copyright (C) 2017 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-todatestring
+description: Invalid Dates are rendered as "Invalid Date"
+info: |
+  ToDateString ( tv )
+
+  ...
+  2. If tv is NaN, return "Invalid Date".
+  ...
+---*/
+
+assert.sameValue(new Date(NaN).toString(), "Invalid Date");
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toString/name.js b/js/src/tests/test262/built-ins/Date/prototype/toString/name.js
new file mode 100644
index 0000000000..9bfd383b55
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toString/name.js
@@ -0,0 +1,28 @@
+// Copyright (C) 2015 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.prototype.tostring
+description: >
+  Date.prototype.toString.name is "toString".
+info: |
+  Date.prototype.toString ( )
+
+  17 ECMAScript Standard Built-in Objects:
+    Every built-in Function object, including constructors, that is not
+    identified as an anonymous function has a name property whose value
+    is a String.
+
+    Unless otherwise specified, the name property of a built-in Function
+    object, if it exists, has the attributes { [[Writable]]: false,
+    [[Enumerable]]: false, [[Configurable]]: true }.
+includes: [propertyHelper.js]
+---*/
+
+assert.sameValue(Date.prototype.toString.name, "toString");
+
+verifyNotEnumerable(Date.prototype.toString, "name");
+verifyNotWritable(Date.prototype.toString, "name");
+verifyConfigurable(Date.prototype.toString, "name");
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toString/negative-year.js b/js/src/tests/test262/built-ins/Date/prototype/toString/negative-year.js
new file mode 100644
index 0000000000..b1cd8d2d2c
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toString/negative-year.js
@@ -0,0 +1,36 @@
+// Copyright (C) 2018 Richard Gibson. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+description: >
+    Negative years must be serialized with at least four digits
+esid: sec-date.prototype.tostring
+info: |
+    Date.prototype.toString ( )
+
+    2. Return ToDateString(_tv_).
+---*/
+
+var negative1DigitYearToString = (new Date('-000001-07-01T00:00Z')).toString();
+var negative2DigitYearToString = (new Date('-000012-07-01T00:00Z')).toString();
+var negative3DigitYearToString = (new Date('-000123-07-01T00:00Z')).toString();
+var negative4DigitYearToString = (new Date('-001234-07-01T00:00Z')).toString();
+var negative5DigitYearToString = (new Date('-012345-07-01T00:00Z')).toString();
+var negative6DigitYearToString = (new Date('-123456-07-01T00:00Z')).toString();
+
+// Date.prototype.toString emits values like
+// "Fri Mar 28 2019 10:23:42 GMT-0400 (Eastern Daylight Time)".
+// Extract and verify just the year.
+assert.sameValue(negative1DigitYearToString.split(' ')[3], '-0001',
+    'Date.prototype.toString serializes year -1 to "-0001"');
+assert.sameValue(negative2DigitYearToString.split(' ')[3], '-0012',
+    'Date.prototype.toString serializes year -12 to "-0012"');
+assert.sameValue(negative3DigitYearToString.split(' ')[3], '-0123',
+    'Date.prototype.toString serializes year -123 to "-0123"');
+assert.sameValue(negative4DigitYearToString.split(' ')[3], '-1234',
+    'Date.prototype.toString serializes year -1234 to "-1234"');
+assert.sameValue(negative5DigitYearToString.split(' ')[3], '-12345',
+    'Date.prototype.toString serializes year -12345 to "-12345"');
+assert.sameValue(negative6DigitYearToString.split(' ')[3], '-123456',
+    'Date.prototype.toString serializes year -123456 to "-123456"');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toString/non-date-receiver.js b/js/src/tests/test262/built-ins/Date/prototype/toString/non-date-receiver.js
new file mode 100644
index 0000000000..02ce03a839
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toString/non-date-receiver.js
@@ -0,0 +1,22 @@
+// Copyright (C) 2017 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.prototype.tostring
+description: Date.prototype.toString throws a TypeError on non-Date receivers
+info: |
+  Date.prototype.toString ( )
+
+  1. Let tv be ? thisTimeValue(this value).
+---*/
+
+assert.throws(TypeError, () => Date.prototype.toString());
+assert.throws(TypeError, () => Date.prototype.toString.call(undefined));
+assert.throws(TypeError, () => Date.prototype.toString.call(0));
+assert.throws(TypeError, () => Date.prototype.toString.call({}));
+assert.throws(TypeError, () =>
+  Date.prototype.toString.call("Tue Mar 21 2017 12:16:43 GMT-0400 (EDT)"));
+assert.throws(TypeError, () =>
+  Date.prototype.toString.call(1490113011493));
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toString/not-a-constructor.js b/js/src/tests/test262/built-ins/Date/prototype/toString/not-a-constructor.js
new file mode 100644
index 0000000000..29da7f63b2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toString/not-a-constructor.js
@@ -0,0 +1,35 @@
+// Copyright (C) 2020 Rick Waldron. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-ecmascript-standard-built-in-objects
+description: >
+  Date.prototype.toString does not implement [[Construct]], is not new-able
+info: |
+  ECMAScript Function Objects
+
+  Built-in function objects that are not identified as constructors do not
+  implement the [[Construct]] internal method unless otherwise specified in
+  the description of a particular function.
+
+  sec-evaluatenew
+
+  ...
+  7. If IsConstructor(constructor) is false, throw a TypeError exception.
+  ...
+includes: [isConstructor.js]
+features: [Reflect.construct, arrow-function]
+---*/
+
+assert.sameValue(
+  isConstructor(Date.prototype.toString),
+  false,
+  'isConstructor(Date.prototype.toString) must return false'
+);
+
+assert.throws(TypeError, () => {
+  let date = new Date(Date.now()); new date.toString();
+}, '`let date = new Date(Date.now()); new date.toString()` throws TypeError');
+
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toString/shell.js b/js/src/tests/test262/built-ins/Date/prototype/toString/shell.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toString/shell.js
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toTimeString/S15.9.5.4_A1_T1.js b/js/src/tests/test262/built-ins/Date/prototype/toTimeString/S15.9.5.4_A1_T1.js
new file mode 100644
index 0000000000..4b2913c51f
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toTimeString/S15.9.5.4_A1_T1.js
@@ -0,0 +1,25 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype property "toTimeString" has { DontEnum } attributes
+esid: sec-date.prototype.totimestring
+description: Checking absence of ReadOnly attribute
+---*/
+
+var x = Date.prototype.toTimeString;
+if (x === 1) {
+  Date.prototype.toTimeString = 2;
+} else {
+  Date.prototype.toTimeString = 1;
+}
+
+assert.notSameValue(
+  Date.prototype.toTimeString,
+  x,
+  'The value of Date.prototype.toTimeString is expected to not equal the value of `x`'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toTimeString/S15.9.5.4_A1_T2.js b/js/src/tests/test262/built-ins/Date/prototype/toTimeString/S15.9.5.4_A1_T2.js
new file mode 100644
index 0000000000..8a9830dd56
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toTimeString/S15.9.5.4_A1_T2.js
@@ -0,0 +1,23 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype property "toTimeString" has { DontEnum } attributes
+esid: sec-date.prototype.totimestring
+description: Checking absence of DontDelete attribute
+---*/
+
+assert.notSameValue(
+  delete Date.prototype.toTimeString,
+  false,
+  'The value of delete Date.prototype.toTimeString is not false'
+);
+
+assert(
+  !Date.prototype.hasOwnProperty('toTimeString'),
+  'The value of !Date.prototype.hasOwnProperty(\'toTimeString\') is expected to be true'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toTimeString/S15.9.5.4_A1_T3.js b/js/src/tests/test262/built-ins/Date/prototype/toTimeString/S15.9.5.4_A1_T3.js
new file mode 100644
index 0000000000..c6a0aa0e02
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toTimeString/S15.9.5.4_A1_T3.js
@@ -0,0 +1,20 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype property "toTimeString" has { DontEnum } attributes
+esid: sec-date.prototype.totimestring
+description: Checking DontEnum attribute
+---*/
+assert(
+  !Date.prototype.propertyIsEnumerable('toTimeString'),
+  'The value of !Date.prototype.propertyIsEnumerable(\'toTimeString\') is expected to be true'
+);
+
+for (var x in Date.prototype) {
+  assert.notSameValue(x, "toTimeString", 'The value of x is not "toTimeString"');
+}
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toTimeString/S15.9.5.4_A2_T1.js b/js/src/tests/test262/built-ins/Date/prototype/toTimeString/S15.9.5.4_A2_T1.js
new file mode 100644
index 0000000000..2d8c9676f3
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toTimeString/S15.9.5.4_A2_T1.js
@@ -0,0 +1,22 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+info: The "length" property of the "toTimeString" is 0
+esid: sec-date.prototype.totimestring
+description: The "length" property of the "toTimeString" is 0
+---*/
+
+assert.sameValue(
+  Date.prototype.toTimeString.hasOwnProperty("length"),
+  true,
+  'Date.prototype.toTimeString.hasOwnProperty("length") must return true'
+);
+
+
+assert.sameValue(
+  Date.prototype.toTimeString.length,
+  0,
+  'The value of Date.prototype.toTimeString.length is expected to be 0'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toTimeString/S15.9.5.4_A3_T1.js b/js/src/tests/test262/built-ins/Date/prototype/toTimeString/S15.9.5.4_A3_T1.js
new file mode 100644
index 0000000000..8337e86cbf
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toTimeString/S15.9.5.4_A3_T1.js
@@ -0,0 +1,24 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype.toTimeString property "length" has { ReadOnly,
+    DontDelete, DontEnum } attributes
+esid: sec-date.prototype.totimestring
+description: Checking ReadOnly attribute
+includes: [propertyHelper.js]
+---*/
+
+var x = Date.prototype.toTimeString.length;
+verifyNotWritable(Date.prototype.toTimeString, "length", null, 1);
+
+assert.sameValue(
+  Date.prototype.toTimeString.length,
+  x,
+  'The value of Date.prototype.toTimeString.length is expected to equal the value of x'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toTimeString/S15.9.5.4_A3_T2.js b/js/src/tests/test262/built-ins/Date/prototype/toTimeString/S15.9.5.4_A3_T2.js
new file mode 100644
index 0000000000..27c8d06ee0
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toTimeString/S15.9.5.4_A3_T2.js
@@ -0,0 +1,24 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype.toTimeString property "length" has { ReadOnly, !
+    DontDelete, DontEnum } attributes
+esid: sec-date.prototype.totimestring
+description: Checking DontDelete attribute
+---*/
+assert.sameValue(
+  delete Date.prototype.toTimeString.length,
+  true,
+  'The value of `delete Date.prototype.toTimeString.length` is expected to be true'
+);
+
+assert(
+  !Date.prototype.toTimeString.hasOwnProperty('length'),
+  'The value of !Date.prototype.toTimeString.hasOwnProperty(\'length\') is expected to be true'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toTimeString/S15.9.5.4_A3_T3.js b/js/src/tests/test262/built-ins/Date/prototype/toTimeString/S15.9.5.4_A3_T3.js
new file mode 100644
index 0000000000..ef6033fcc8
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toTimeString/S15.9.5.4_A3_T3.js
@@ -0,0 +1,22 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype.toTimeString property "length" has { ReadOnly,
+    DontDelete, DontEnum } attributes
+esid: sec-date.prototype.totimestring
+description: Checking DontEnum attribute
+---*/
+assert(
+  !Date.prototype.toTimeString.propertyIsEnumerable('length'),
+  'The value of !Date.prototype.toTimeString.propertyIsEnumerable(\'length\') is expected to be true'
+);
+
+for (var x in Date.prototype.toTimeString) {
+  assert.notSameValue(x, "length", 'The value of x is not "length"');
+}
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toTimeString/browser.js b/js/src/tests/test262/built-ins/Date/prototype/toTimeString/browser.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toTimeString/browser.js
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toTimeString/format.js b/js/src/tests/test262/built-ins/Date/prototype/toTimeString/format.js
new file mode 100644
index 0000000000..a00923a27a
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toTimeString/format.js
@@ -0,0 +1,17 @@
+// Copyright (C) 2017 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.prototype.totimestring
+description: Test the format of the time from toTimeString
+info: |
+  Date.prototype.toTimeString ( )
+
+  5. Return the String value formed by concatenating TimeString(_t_) and TimeZoneString(_tv_).
+---*/
+
+let timeRegExp = /^[0-9]{2}:[0-9]{2}:[0-9]{2} GMT[+-][0-9]{4}( \(.+\))?$/
+let match = timeRegExp.exec(new Date().toTimeString());
+assert.notSameValue(null, match);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toTimeString/invalid-date.js b/js/src/tests/test262/built-ins/Date/prototype/toTimeString/invalid-date.js
new file mode 100644
index 0000000000..58e9ebd515
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toTimeString/invalid-date.js
@@ -0,0 +1,17 @@
+// Copyright (C) 2017 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.prototype.totimestring
+description: Invalid Dates are rendered as "Invalid Date"
+info: |
+  Date.prototype.toTimeString ( )
+
+  ...
+  3. If tv is NaN, return "Invalid Date".
+  ...
+---*/
+
+assert.sameValue(new Date(NaN).toTimeString(), "Invalid Date");
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toTimeString/name.js b/js/src/tests/test262/built-ins/Date/prototype/toTimeString/name.js
new file mode 100644
index 0000000000..4616efbad2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toTimeString/name.js
@@ -0,0 +1,28 @@
+// Copyright (C) 2015 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.prototype.totimestring
+description: >
+  Date.prototype.toTimeString.name is "toTimeString".
+info: |
+  Date.prototype.toTimeString ( )
+
+  17 ECMAScript Standard Built-in Objects:
+    Every built-in Function object, including constructors, that is not
+    identified as an anonymous function has a name property whose value
+    is a String.
+
+    Unless otherwise specified, the name property of a built-in Function
+    object, if it exists, has the attributes { [[Writable]]: false,
+    [[Enumerable]]: false, [[Configurable]]: true }.
+includes: [propertyHelper.js]
+---*/
+
+assert.sameValue(Date.prototype.toTimeString.name, "toTimeString");
+
+verifyNotEnumerable(Date.prototype.toTimeString, "name");
+verifyNotWritable(Date.prototype.toTimeString, "name");
+verifyConfigurable(Date.prototype.toTimeString, "name");
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toTimeString/not-a-constructor.js b/js/src/tests/test262/built-ins/Date/prototype/toTimeString/not-a-constructor.js
new file mode 100644
index 0000000000..7191049f7c
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toTimeString/not-a-constructor.js
@@ -0,0 +1,35 @@
+// Copyright (C) 2020 Rick Waldron. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-ecmascript-standard-built-in-objects
+description: >
+  Date.prototype.toTimeString does not implement [[Construct]], is not new-able
+info: |
+  ECMAScript Function Objects
+
+  Built-in function objects that are not identified as constructors do not
+  implement the [[Construct]] internal method unless otherwise specified in
+  the description of a particular function.
+
+  sec-evaluatenew
+
+  ...
+  7. If IsConstructor(constructor) is false, throw a TypeError exception.
+  ...
+includes: [isConstructor.js]
+features: [Reflect.construct, arrow-function]
+---*/
+
+assert.sameValue(
+  isConstructor(Date.prototype.toTimeString),
+  false,
+  'isConstructor(Date.prototype.toTimeString) must return false'
+);
+
+assert.throws(TypeError, () => {
+  let date = new Date(Date.now()); new date.toTimeString();
+}, '`let date = new Date(Date.now()); new date.toTimeString()` throws TypeError');
+
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toTimeString/shell.js b/js/src/tests/test262/built-ins/Date/prototype/toTimeString/shell.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toTimeString/shell.js
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toUTCString/S15.9.5.42_A1_T1.js b/js/src/tests/test262/built-ins/Date/prototype/toUTCString/S15.9.5.42_A1_T1.js
new file mode 100644
index 0000000000..8112c69a00
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toUTCString/S15.9.5.42_A1_T1.js
@@ -0,0 +1,25 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype property "toUTCString" has { DontEnum } attributes
+esid: sec-date.prototype.toutcstring
+description: Checking absence of ReadOnly attribute
+---*/
+
+var x = Date.prototype.toUTCString;
+if (x === 1) {
+  Date.prototype.toUTCString = 2;
+} else {
+  Date.prototype.toUTCString = 1;
+}
+
+assert.notSameValue(
+  Date.prototype.toUTCString,
+  x,
+  'The value of Date.prototype.toUTCString is expected to not equal the value of `x`'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toUTCString/S15.9.5.42_A1_T2.js b/js/src/tests/test262/built-ins/Date/prototype/toUTCString/S15.9.5.42_A1_T2.js
new file mode 100644
index 0000000000..381863eb75
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toUTCString/S15.9.5.42_A1_T2.js
@@ -0,0 +1,23 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype property "toUTCString" has { DontEnum } attributes
+esid: sec-date.prototype.toutcstring
+description: Checking absence of DontDelete attribute
+---*/
+
+assert.notSameValue(
+  delete Date.prototype.toUTCString,
+  false,
+  'The value of delete Date.prototype.toUTCString is not false'
+);
+
+assert(
+  !Date.prototype.hasOwnProperty('toUTCString'),
+  'The value of !Date.prototype.hasOwnProperty(\'toUTCString\') is expected to be true'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toUTCString/S15.9.5.42_A1_T3.js b/js/src/tests/test262/built-ins/Date/prototype/toUTCString/S15.9.5.42_A1_T3.js
new file mode 100644
index 0000000000..9f6547954c
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toUTCString/S15.9.5.42_A1_T3.js
@@ -0,0 +1,20 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype property "toUTCString" has { DontEnum } attributes
+esid: sec-date.prototype.toutcstring
+description: Checking DontEnum attribute
+---*/
+assert(
+  !Date.prototype.propertyIsEnumerable('toUTCString'),
+  'The value of !Date.prototype.propertyIsEnumerable(\'toUTCString\') is expected to be true'
+);
+
+for (var x in Date.prototype) {
+  assert.notSameValue(x, "toUTCString", 'The value of x is not "toUTCString"');
+}
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toUTCString/S15.9.5.42_A2_T1.js b/js/src/tests/test262/built-ins/Date/prototype/toUTCString/S15.9.5.42_A2_T1.js
new file mode 100644
index 0000000000..b7e15d69ae
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toUTCString/S15.9.5.42_A2_T1.js
@@ -0,0 +1,22 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The "length" property of the "toUTCString" is 0
+esid: sec-date.prototype.toutcstring
+description: The "length" property of the "toUTCString" is 0
+---*/
+
+assert.sameValue(
+  Date.prototype.toUTCString.hasOwnProperty("length"),
+  true,
+  'Date.prototype.toUTCString.hasOwnProperty("length") must return true'
+);
+
+assert.sameValue(
+  Date.prototype.toUTCString.length,
+  0,
+  'The value of Date.prototype.toUTCString.length is expected to be 0'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toUTCString/S15.9.5.42_A3_T1.js b/js/src/tests/test262/built-ins/Date/prototype/toUTCString/S15.9.5.42_A3_T1.js
new file mode 100644
index 0000000000..37634bdfe6
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toUTCString/S15.9.5.42_A3_T1.js
@@ -0,0 +1,24 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype.toUTCString property "length" has { ReadOnly,
+    DontDelete, DontEnum } attributes
+esid: sec-date.prototype.toutcstring
+description: Checking ReadOnly attribute
+includes: [propertyHelper.js]
+---*/
+
+var x = Date.prototype.toUTCString.length;
+verifyNotWritable(Date.prototype.toUTCString, "length", null, 1);
+
+assert.sameValue(
+  Date.prototype.toUTCString.length,
+  x,
+  'The value of Date.prototype.toUTCString.length is expected to equal the value of x'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toUTCString/S15.9.5.42_A3_T2.js b/js/src/tests/test262/built-ins/Date/prototype/toUTCString/S15.9.5.42_A3_T2.js
new file mode 100644
index 0000000000..23528c870d
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toUTCString/S15.9.5.42_A3_T2.js
@@ -0,0 +1,25 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype.toUTCString property "length" has { ReadOnly, !
+    DontDelete, DontEnum } attributes
+esid: sec-date.prototype.toutcstring
+description: Checking DontDelete attribute
+---*/
+
+assert.sameValue(
+  delete Date.prototype.toUTCString.length,
+  true,
+  'The value of `delete Date.prototype.toUTCString.length` is expected to be true'
+);
+
+assert(
+  !Date.prototype.toUTCString.hasOwnProperty('length'),
+  'The value of !Date.prototype.toUTCString.hasOwnProperty(\'length\') is expected to be true'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toUTCString/S15.9.5.42_A3_T3.js b/js/src/tests/test262/built-ins/Date/prototype/toUTCString/S15.9.5.42_A3_T3.js
new file mode 100644
index 0000000000..b15da4c994
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toUTCString/S15.9.5.42_A3_T3.js
@@ -0,0 +1,22 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype.toUTCString property "length" has { ReadOnly,
+    DontDelete, DontEnum } attributes
+esid: sec-date.prototype.toutcstring
+description: Checking DontEnum attribute
+---*/
+assert(
+  !Date.prototype.toUTCString.propertyIsEnumerable('length'),
+  'The value of !Date.prototype.toUTCString.propertyIsEnumerable(\'length\') is expected to be true'
+);
+
+for (var x in Date.prototype.toUTCString) {
+  assert.notSameValue(x, "length", 'The value of x is not "length"');
+}
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toUTCString/browser.js b/js/src/tests/test262/built-ins/Date/prototype/toUTCString/browser.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toUTCString/browser.js
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toUTCString/day-names.js b/js/src/tests/test262/built-ins/Date/prototype/toUTCString/day-names.js
new file mode 100644
index 0000000000..89af6499ab
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toUTCString/day-names.js
@@ -0,0 +1,24 @@
+// Copyright (C) 2017 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-todatestring-day-names
+description: Test the names of days
+---*/
+
+assert.sameValue("Sun, 23 Mar 2014 00:00:00 GMT",
+                 (new Date("2014-03-23T00:00:00Z")).toUTCString());
+assert.sameValue("Mon, 24 Mar 2014 00:00:00 GMT",
+                 (new Date("2014-03-24T00:00:00Z")).toUTCString());
+assert.sameValue("Tue, 25 Mar 2014 00:00:00 GMT",
+                 (new Date("2014-03-25T00:00:00Z")).toUTCString());
+assert.sameValue("Wed, 26 Mar 2014 00:00:00 GMT",
+                 (new Date("2014-03-26T00:00:00Z")).toUTCString());
+assert.sameValue("Thu, 27 Mar 2014 00:00:00 GMT",
+                 (new Date("2014-03-27T00:00:00Z")).toUTCString());
+assert.sameValue("Fri, 28 Mar 2014 00:00:00 GMT",
+                 (new Date("2014-03-28T00:00:00Z")).toUTCString());
+assert.sameValue("Sat, 29 Mar 2014 00:00:00 GMT",
+                 (new Date("2014-03-29T00:00:00Z")).toUTCString());
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toUTCString/format.js b/js/src/tests/test262/built-ins/Date/prototype/toUTCString/format.js
new file mode 100644
index 0000000000..54d3c07b1b
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toUTCString/format.js
@@ -0,0 +1,20 @@
+// Copyright (C) 2017 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.prototype.toutcstring
+description: Test the format of the date from toUTCString
+info: |
+  Date.prototype.toUTCString ( )
+
+  4. Return the String value formed by concatenating DateString(_tv_, `", "`), `" "`, and TimeString(_tv_).
+---*/
+
+let utcRegExp = /^(Sun|Mon|Tue|Wed|Thu|Fri|Sat), [0-9]{2} (Jan|Feb|Mar|Apr|May|Jun|Jul|Aug|Sep|Oct|Nov|Dec) [0-9]{4} [0-9]{2}:[0-9]{2}:[0-9]{2} GMT$/
+let match = utcRegExp.exec(new Date().toUTCString());
+assert.notSameValue(null, match);
+
+// Years are padded to the left with zeroes
+assert.sameValue('Wed, 01 Jan 0020 00:00:00 GMT', new Date('0020-01-01T00:00:00Z').toUTCString());
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toUTCString/invalid-date.js b/js/src/tests/test262/built-ins/Date/prototype/toUTCString/invalid-date.js
new file mode 100644
index 0000000000..8e2e433952
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toUTCString/invalid-date.js
@@ -0,0 +1,17 @@
+// Copyright (C) 2017 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.prototype.toutcstring
+description: Invalid Dates are rendered as "Invalid Date"
+info: |
+  Date.prototype.toUTCString ( )
+
+  ...
+  3. If tv is NaN, return "Invalid Date".
+  ...
+---*/
+
+assert.sameValue(new Date(NaN).toUTCString(), "Invalid Date");
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toUTCString/month-names.js b/js/src/tests/test262/built-ins/Date/prototype/toUTCString/month-names.js
new file mode 100644
index 0000000000..e6689d109a
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toUTCString/month-names.js
@@ -0,0 +1,34 @@
+// Copyright (C) 2017 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-todatestring-month-names
+description: Test the names of months
+---*/
+
+assert.sameValue("Wed, 01 Jan 2014 00:00:00 GMT",
+                 (new Date("2014-01-01T00:00:00Z")).toUTCString());
+assert.sameValue("Sat, 01 Feb 2014 00:00:00 GMT",
+                 (new Date("2014-02-01T00:00:00Z")).toUTCString());
+assert.sameValue("Sat, 01 Mar 2014 00:00:00 GMT",
+                 (new Date("2014-03-01T00:00:00Z")).toUTCString());
+assert.sameValue("Tue, 01 Apr 2014 00:00:00 GMT",
+                 (new Date("2014-04-01T00:00:00Z")).toUTCString());
+assert.sameValue("Thu, 01 May 2014 00:00:00 GMT",
+                 (new Date("2014-05-01T00:00:00Z")).toUTCString());
+assert.sameValue("Sun, 01 Jun 2014 00:00:00 GMT",
+                 (new Date("2014-06-01T00:00:00Z")).toUTCString());
+assert.sameValue("Tue, 01 Jul 2014 00:00:00 GMT",
+                 (new Date("2014-07-01T00:00:00Z")).toUTCString());
+assert.sameValue("Fri, 01 Aug 2014 00:00:00 GMT",
+                 (new Date("2014-08-01T00:00:00Z")).toUTCString());
+assert.sameValue("Mon, 01 Sep 2014 00:00:00 GMT",
+                 (new Date("2014-09-01T00:00:00Z")).toUTCString());
+assert.sameValue("Wed, 01 Oct 2014 00:00:00 GMT",
+                 (new Date("2014-10-01T00:00:00Z")).toUTCString());
+assert.sameValue("Sat, 01 Nov 2014 00:00:00 GMT",
+                 (new Date("2014-11-01T00:00:00Z")).toUTCString());
+assert.sameValue("Mon, 01 Dec 2014 00:00:00 GMT",
+                 (new Date("2014-12-01T00:00:00Z")).toUTCString());
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toUTCString/name.js b/js/src/tests/test262/built-ins/Date/prototype/toUTCString/name.js
new file mode 100644
index 0000000000..96fb0dce00
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toUTCString/name.js
@@ -0,0 +1,28 @@
+// Copyright (C) 2015 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.prototype.toutcstring
+description: >
+  Date.prototype.toUTCString.name is "toUTCString".
+info: |
+  Date.prototype.toUTCString ( )
+
+  17 ECMAScript Standard Built-in Objects:
+    Every built-in Function object, including constructors, that is not
+    identified as an anonymous function has a name property whose value
+    is a String.
+
+    Unless otherwise specified, the name property of a built-in Function
+    object, if it exists, has the attributes { [[Writable]]: false,
+    [[Enumerable]]: false, [[Configurable]]: true }.
+includes: [propertyHelper.js]
+---*/
+
+assert.sameValue(Date.prototype.toUTCString.name, "toUTCString");
+
+verifyNotEnumerable(Date.prototype.toUTCString, "name");
+verifyNotWritable(Date.prototype.toUTCString, "name");
+verifyConfigurable(Date.prototype.toUTCString, "name");
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toUTCString/negative-year.js b/js/src/tests/test262/built-ins/Date/prototype/toUTCString/negative-year.js
new file mode 100644
index 0000000000..a7bbcdf30a
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toUTCString/negative-year.js
@@ -0,0 +1,35 @@
+// Copyright (C) 2018 Richard Gibson. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+description: >
+    Negative years must be serialized with at least four digits
+esid: sec-date.prototype.toutcstring
+info: |
+    Date.prototype.toUTCString ( )
+
+    10. Return the string-concatenation of _weekday_, `","`, the code unit 0x0020 (SPACE), _day_, the code unit 0x0020 (SPACE), _month_, the code unit 0x0020 (SPACE), _yearSign_, _year_, the code unit 0x0020 (SPACE), and TimeString(_tv_).
+---*/
+
+var negative1DigitYearToUTCString = (new Date('-000001-07-01T00:00Z')).toUTCString();
+var negative2DigitYearToUTCString = (new Date('-000012-07-01T00:00Z')).toUTCString();
+var negative3DigitYearToUTCString = (new Date('-000123-07-01T00:00Z')).toUTCString();
+var negative4DigitYearToUTCString = (new Date('-001234-07-01T00:00Z')).toUTCString();
+var negative5DigitYearToUTCString = (new Date('-012345-07-01T00:00Z')).toUTCString();
+var negative6DigitYearToUTCString = (new Date('-123456-07-01T00:00Z')).toUTCString();
+
+// Date.prototype.toUTCString emits values like "Thu, 28 Mar 2019 10:23:42 GMT".
+// Extract and verify just the year.
+assert.sameValue(negative1DigitYearToUTCString.split(' ')[3], '-0001',
+    'Date.prototype.toUTCString serializes year -1 to "-0001"');
+assert.sameValue(negative2DigitYearToUTCString.split(' ')[3], '-0012',
+    'Date.prototype.toUTCString serializes year -12 to "-0012"');
+assert.sameValue(negative3DigitYearToUTCString.split(' ')[3], '-0123',
+    'Date.prototype.toUTCString serializes year -123 to "-0123"');
+assert.sameValue(negative4DigitYearToUTCString.split(' ')[3], '-1234',
+    'Date.prototype.toUTCString serializes year -1234 to "-1234"');
+assert.sameValue(negative5DigitYearToUTCString.split(' ')[3], '-12345',
+    'Date.prototype.toUTCString serializes year -12345 to "-12345"');
+assert.sameValue(negative6DigitYearToUTCString.split(' ')[3], '-123456',
+    'Date.prototype.toUTCString serializes year -123456 to "-123456"');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toUTCString/not-a-constructor.js b/js/src/tests/test262/built-ins/Date/prototype/toUTCString/not-a-constructor.js
new file mode 100644
index 0000000000..7c944cd036
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toUTCString/not-a-constructor.js
@@ -0,0 +1,35 @@
+// Copyright (C) 2020 Rick Waldron. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-ecmascript-standard-built-in-objects
+description: >
+  Date.prototype.toUTCString does not implement [[Construct]], is not new-able
+info: |
+  ECMAScript Function Objects
+
+  Built-in function objects that are not identified as constructors do not
+  implement the [[Construct]] internal method unless otherwise specified in
+  the description of a particular function.
+
+  sec-evaluatenew
+
+  ...
+  7. If IsConstructor(constructor) is false, throw a TypeError exception.
+  ...
+includes: [isConstructor.js]
+features: [Reflect.construct, arrow-function]
+---*/
+
+assert.sameValue(
+  isConstructor(Date.prototype.toUTCString),
+  false,
+  'isConstructor(Date.prototype.toUTCString) must return false'
+);
+
+assert.throws(TypeError, () => {
+  let date = new Date(Date.now()); new date.toUTCString();
+}, '`let date = new Date(Date.now()); new date.toUTCString()` throws TypeError');
+
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/toUTCString/shell.js b/js/src/tests/test262/built-ins/Date/prototype/toUTCString/shell.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/toUTCString/shell.js
diff --git a/js/src/tests/test262/built-ins/Date/prototype/valueOf/S15.9.5.8_A1_T1.js b/js/src/tests/test262/built-ins/Date/prototype/valueOf/S15.9.5.8_A1_T1.js
new file mode 100644
index 0000000000..704878882a
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/valueOf/S15.9.5.8_A1_T1.js
@@ -0,0 +1,25 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype property "valueOf" has { DontEnum } attributes
+esid: sec-date.prototype.valueof
+description: Checking absence of ReadOnly attribute
+---*/
+
+var x = Date.prototype.valueOf;
+if (x === 1) {
+  Date.prototype.valueOf = 2;
+} else {
+  Date.prototype.valueOf = 1;
+}
+
+assert.notSameValue(
+  Date.prototype.valueOf,
+  x,
+  'The value of Date.prototype.valueOf is expected to not equal the value of `x`'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/valueOf/S15.9.5.8_A1_T2.js b/js/src/tests/test262/built-ins/Date/prototype/valueOf/S15.9.5.8_A1_T2.js
new file mode 100644
index 0000000000..f19351c81b
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/valueOf/S15.9.5.8_A1_T2.js
@@ -0,0 +1,19 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype property "valueOf" has { DontEnum } attributes
+esid: sec-date.prototype.valueof
+description: Checking absence of DontDelete attribute
+---*/
+
+assert.notSameValue(delete Date.prototype.valueOf, false, 'The value of delete Date.prototype.valueOf is not false');
+
+assert(
+  !Date.prototype.hasOwnProperty('valueOf'),
+  'The value of !Date.prototype.hasOwnProperty(\'valueOf\') is expected to be true'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/valueOf/S15.9.5.8_A1_T3.js b/js/src/tests/test262/built-ins/Date/prototype/valueOf/S15.9.5.8_A1_T3.js
new file mode 100644
index 0000000000..e9c3021e81
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/valueOf/S15.9.5.8_A1_T3.js
@@ -0,0 +1,20 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The Date.prototype property "valueOf" has { DontEnum } attributes
+esid: sec-date.prototype.valueof
+description: Checking DontEnum attribute
+---*/
+assert(
+  !Date.prototype.propertyIsEnumerable('valueOf'),
+  'The value of !Date.prototype.propertyIsEnumerable(\'valueOf\') is expected to be true'
+);
+
+for (var x in Date.prototype) {
+  assert.notSameValue(x, "valueOf", 'The value of x is not "valueOf"');
+}
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/valueOf/S15.9.5.8_A2_T1.js b/js/src/tests/test262/built-ins/Date/prototype/valueOf/S15.9.5.8_A2_T1.js
new file mode 100644
index 0000000000..1653792cf0
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/valueOf/S15.9.5.8_A2_T1.js
@@ -0,0 +1,18 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: The "length" property of the "valueOf" is 0
+esid: sec-date.prototype.valueof
+description: The "length" property of the "valueOf" is 0
+---*/
+
+assert.sameValue(
+  Date.prototype.valueOf.hasOwnProperty("length"),
+  true,
+  'Date.prototype.valueOf.hasOwnProperty("length") must return true'
+);
+
+assert.sameValue(Date.prototype.valueOf.length, 0, 'The value of Date.prototype.valueOf.length is expected to be 0');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/valueOf/S15.9.5.8_A3_T1.js b/js/src/tests/test262/built-ins/Date/prototype/valueOf/S15.9.5.8_A3_T1.js
new file mode 100644
index 0000000000..24e84469c9
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/valueOf/S15.9.5.8_A3_T1.js
@@ -0,0 +1,24 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype.valueOf property "length" has { ReadOnly, DontDelete,
+    DontEnum } attributes
+esid: sec-date.prototype.valueof
+description: Checking ReadOnly attribute
+includes: [propertyHelper.js]
+---*/
+
+var x = Date.prototype.valueOf.length;
+verifyNotWritable(Date.prototype.valueOf, "length", null, 1);
+
+assert.sameValue(
+  Date.prototype.valueOf.length,
+  x,
+  'The value of Date.prototype.valueOf.length is expected to equal the value of x'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/valueOf/S15.9.5.8_A3_T2.js b/js/src/tests/test262/built-ins/Date/prototype/valueOf/S15.9.5.8_A3_T2.js
new file mode 100644
index 0000000000..9cfe3eab54
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/valueOf/S15.9.5.8_A3_T2.js
@@ -0,0 +1,25 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype.valueOf property "length" has { ReadOnly, !
+    DontDelete, DontEnum } attributes
+esid: sec-date.prototype.valueof
+description: Checking DontDelete attribute
+---*/
+
+assert.sameValue(
+  delete Date.prototype.valueOf.length,
+  true,
+  'The value of `delete Date.prototype.valueOf.length` is expected to be true'
+);
+
+assert(
+  !Date.prototype.valueOf.hasOwnProperty('length'),
+  'The value of !Date.prototype.valueOf.hasOwnProperty(\'length\') is expected to be true'
+);
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/valueOf/S15.9.5.8_A3_T3.js b/js/src/tests/test262/built-ins/Date/prototype/valueOf/S15.9.5.8_A3_T3.js
new file mode 100644
index 0000000000..5d3dcf9c67
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/valueOf/S15.9.5.8_A3_T3.js
@@ -0,0 +1,22 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: |
+    The Date.prototype.valueOf property "length" has { ReadOnly, DontDelete,
+    DontEnum } attributes
+esid: sec-date.prototype.valueof
+description: Checking DontEnum attribute
+---*/
+assert(
+  !Date.prototype.valueOf.propertyIsEnumerable('length'),
+  'The value of !Date.prototype.valueOf.propertyIsEnumerable(\'length\') is expected to be true'
+);
+
+for (var x in Date.prototype.valueOf) {
+  assert.notSameValue(x, "length", 'The value of x is not "length"');
+}
+
+// TODO: Convert to verifyProperty() format.
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/valueOf/S9.4_A3_T1.js b/js/src/tests/test262/built-ins/Date/prototype/valueOf/S9.4_A3_T1.js
new file mode 100644
index 0000000000..65de790c8e
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/valueOf/S9.4_A3_T1.js
@@ -0,0 +1,61 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.prototype.valueof
+info: |
+    Result of ToInteger(value) conversion is the result of computing
+    sign(ToNumber(value)) * floor(abs(ToNumber(value)))
+es5id: 9.4_A3_T1
+description: For testing constructor Date(Number) is used
+---*/
+
+// CHECK#1
+var d1 = new Date(6.54321);
+assert.sameValue(d1.valueOf(), 6, 'd1.valueOf() must return 6');
+
+// CHECK#2
+var d2 = new Date(-6.54321);
+assert.sameValue(d2.valueOf(), -6, 'd2.valueOf() must return -6');
+
+// CHECK#3
+var d3 = new Date(6.54321e2);
+assert.sameValue(d3.valueOf(), 654, 'd3.valueOf() must return 654');
+
+// CHECK#4
+var d4 = new Date(-6.54321e2);
+assert.sameValue(d4.valueOf(), -654, 'd4.valueOf() must return -654');
+
+// CHECK#5
+var d5 = new Date(0.654321e1);
+assert.sameValue(d5.valueOf(), 6, 'd5.valueOf() must return 6');
+
+// CHECK#6
+var d6 = new Date(-0.654321e1);
+assert.sameValue(d6.valueOf(), -6, 'd6.valueOf() must return -6');
+
+// CHECK#7
+var d7 = new Date(true);
+assert.sameValue(d7.valueOf(), 1, 'd7.valueOf() must return 1');
+
+// CHECK#8
+var d8 = new Date(false);
+assert.sameValue(d8.valueOf(), 0, 'd8.valueOf() must return 0');
+
+// CHECK#9
+var d9 = new Date(1.23e15);
+assert.sameValue(d9.valueOf(), 1.23e15, 'd9.valueOf() must return 1.23e15');
+
+// CHECK#10
+var d10 = new Date(-1.23e15);
+assert.sameValue(d10.valueOf(), -1.23e15, 'd10.valueOf() must return -1.23e15');
+
+// CHECK#11
+var d11 = new Date(1.23e-15);
+assert.sameValue(d11.valueOf(), 0, 'd11.valueOf() must return 0');
+
+// CHECK#12
+var d12 = new Date(-1.23e-15);
+assert.sameValue(d12.valueOf(), 0, 'd12.valueOf() must return 0');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/valueOf/S9.4_A3_T2.js b/js/src/tests/test262/built-ins/Date/prototype/valueOf/S9.4_A3_T2.js
new file mode 100644
index 0000000000..e1747d60d6
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/valueOf/S9.4_A3_T2.js
@@ -0,0 +1,35 @@
+// Copyright 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.prototype.valueof
+info: |
+    Result of ToInteger(value) conversion is the result of computing
+    sign(ToNumber(value)) * floor(abs(ToNumber(value)))
+es5id: 9.4_A3_T2
+description: >
+    For testing constructor Date(NaN, Infinity, Infinity, +0 and -0)
+    is used
+---*/
+
+// CHECK#1
+var d1 = new Date(Number.NaN);
+assert.sameValue(d1.valueOf(), NaN, 'd1.valueOf() returns NaN');
+
+// CHECK#2
+var d2 = new Date(Infinity);
+assert.sameValue(d2.valueOf(), NaN, 'd2.valueOf() returns NaN');
+
+// CHECK#3
+var d3 = new Date(-Infinity);
+assert.sameValue(d3.valueOf(), NaN, 'd3.valueOf() returns NaN');
+
+// CHECK#4
+var d4 = new Date(0);
+assert.sameValue(d4.valueOf(), 0, 'd4.valueOf() must return 0');
+
+// CHECK#5
+var d5 = new Date(-0);
+assert.sameValue(d5.valueOf(), 0, 'd5.valueOf() must return 0');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/valueOf/browser.js b/js/src/tests/test262/built-ins/Date/prototype/valueOf/browser.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/valueOf/browser.js
diff --git a/js/src/tests/test262/built-ins/Date/prototype/valueOf/name.js b/js/src/tests/test262/built-ins/Date/prototype/valueOf/name.js
new file mode 100644
index 0000000000..e1e16eb74b
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/valueOf/name.js
@@ -0,0 +1,28 @@
+// Copyright (C) 2015 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-date.prototype.valueof
+description: >
+  Date.prototype.valueOf.name is "valueOf".
+info: |
+  Date.prototype.valueOf ( )
+
+  17 ECMAScript Standard Built-in Objects:
+    Every built-in Function object, including constructors, that is not
+    identified as an anonymous function has a name property whose value
+    is a String.
+
+    Unless otherwise specified, the name property of a built-in Function
+    object, if it exists, has the attributes { [[Writable]]: false,
+    [[Enumerable]]: false, [[Configurable]]: true }.
+includes: [propertyHelper.js]
+---*/
+
+assert.sameValue(Date.prototype.valueOf.name, "valueOf");
+
+verifyNotEnumerable(Date.prototype.valueOf, "name");
+verifyNotWritable(Date.prototype.valueOf, "name");
+verifyConfigurable(Date.prototype.valueOf, "name");
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/valueOf/not-a-constructor.js b/js/src/tests/test262/built-ins/Date/prototype/valueOf/not-a-constructor.js
new file mode 100644
index 0000000000..5e333ff19e
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/valueOf/not-a-constructor.js
@@ -0,0 +1,35 @@
+// Copyright (C) 2020 Rick Waldron. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-ecmascript-standard-built-in-objects
+description: >
+  Date.prototype.valueOf does not implement [[Construct]], is not new-able
+info: |
+  ECMAScript Function Objects
+
+  Built-in function objects that are not identified as constructors do not
+  implement the [[Construct]] internal method unless otherwise specified in
+  the description of a particular function.
+
+  sec-evaluatenew
+
+  ...
+  7. If IsConstructor(constructor) is false, throw a TypeError exception.
+  ...
+includes: [isConstructor.js]
+features: [Reflect.construct, arrow-function]
+---*/
+
+assert.sameValue(
+  isConstructor(Date.prototype.valueOf),
+  false,
+  'isConstructor(Date.prototype.valueOf) must return false'
+);
+
+assert.throws(TypeError, () => {
+  let date = new Date(Date.now()); new date.valueOf();
+}, '`let date = new Date(Date.now()); new date.valueOf()` throws TypeError');
+
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/prototype/valueOf/shell.js b/js/src/tests/test262/built-ins/Date/prototype/valueOf/shell.js
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/prototype/valueOf/shell.js
diff --git a/js/src/tests/test262/built-ins/Date/shell.js b/js/src/tests/test262/built-ins/Date/shell.js
new file mode 100644
index 0000000000..d7ea820221
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/shell.js
@@ -0,0 +1,82 @@
+// GENERATED, DO NOT EDIT
+// file: assertRelativeDateMs.js
+// Copyright (C) 2015 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+description: |
+    Verify that the given date object's Number representation describes the
+    correct number of milliseconds since the Unix epoch relative to the local
+    time zone (as interpreted at the specified date).
+defines: [assertRelativeDateMs]
+---*/
+
+/**
+ * @param {Date} date
+ * @param {Number} expectedMs
+ */
+function assertRelativeDateMs(date, expectedMs) {
+  var actualMs = date.valueOf();
+  var localOffset = date.getTimezoneOffset() * 60000;
+
+  if (actualMs - localOffset !== expectedMs) {
+    throw new Test262Error(
+      'Expected ' + date + ' to be ' + expectedMs +
+      ' milliseconds from the Unix epoch'
+    );
+  }
+}
+
+// file: dateConstants.js
+// Copyright (C) 2009 the Sputnik authors.  All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+description: |
+    Collection of date-centric values
+defines:
+  - date_1899_end
+  - date_1900_start
+  - date_1969_end
+  - date_1970_start
+  - date_1999_end
+  - date_2000_start
+  - date_2099_end
+  - date_2100_start
+  - start_of_time
+  - end_of_time
+---*/
+
+var date_1899_end = -2208988800001;
+var date_1900_start = -2208988800000;
+var date_1969_end = -1;
+var date_1970_start = 0;
+var date_1999_end = 946684799999;
+var date_2000_start = 946684800000;
+var date_2099_end = 4102444799999;
+var date_2100_start = 4102444800000;
+
+var start_of_time = -8.64e15;
+var end_of_time = 8.64e15;
+
+// file: isConstructor.js
+// Copyright (C) 2017 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+description: |
+    Test if a given function is a constructor function.
+defines: [isConstructor]
+features: [Reflect.construct]
+---*/
+
+function isConstructor(f) {
+    if (typeof f !== "function") {
+      throw new Test262Error("isConstructor invoked with a non-function value");
+    }
+
+    try {
+        Reflect.construct(function(){}, [], f);
+    } catch (e) {
+        return false;
+    }
+    return true;
+}
diff --git a/js/src/tests/test262/built-ins/Date/subclassing.js b/js/src/tests/test262/built-ins/Date/subclassing.js
new file mode 100644
index 0000000000..b7f2b7134f
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/subclassing.js
@@ -0,0 +1,56 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date-value
+description: Error retrieving `Symbol.toPrimitive` method from object value
+info: |
+  3. If NewTarget is not undefined, then
+     [...]
+     c. Let O be ? OrdinaryCreateFromConstructor(NewTarget, "%DatePrototype%",
+        « [[DateValue]] »).
+     [...]
+
+  OrdinaryCreateFromConstructor ( constructor, intrinsicDefaultProto [ ,
+  internalSlotsList ] )
+
+  [...]
+  2. Let proto be ? GetPrototypeFromConstructor(constructor,
+     intrinsicDefaultProto).
+  3. Return ObjectCreate(proto, internalSlotsList).
+features: [Reflect]
+---*/
+
+var callCount = 0;
+var Ctor = function() {
+  callCount += 1;
+};
+var instance;
+
+instance = Reflect.construct(Date, [64], Ctor);
+
+assert.sameValue(
+  Object.getPrototypeOf(instance),
+  Ctor.prototype,
+  'constructor defines an object `prototype` property'
+);
+assert.sameValue(callCount, 0, 'constructor not invoked');
+assert.sameValue(
+  Date.prototype.getTime.call(instance),
+  64,
+  'proper subclass has a [[DateValue]] slot'
+);
+
+Ctor.prototype = null;
+instance = Reflect.construct(Date, [64], Ctor);
+
+assert.sameValue(
+  Object.getPrototypeOf(instance),
+  Date.prototype,
+  'constructor does not defines an object `prototype` property'
+);
+assert.sameValue(callCount, 0, 'constructor not invoked');
+assert.sameValue(
+  instance.getTime(), 64, 'direct instance has a [[DateValue]] slot'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/value-get-symbol-to-prim-err.js b/js/src/tests/test262/built-ins/Date/value-get-symbol-to-prim-err.js
new file mode 100644
index 0000000000..bee7a320be
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/value-get-symbol-to-prim-err.js
@@ -0,0 +1,34 @@
+// Copyright (c) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date-value
+description: >
+    Behavior when error thrown while accessing `Symbol.toPrimitive` property
+info: |
+  [...]
+  3. If NewTarget is not undefined, then
+     a. If Type(value) is Object and value has a [[DateValue]] internal slot,
+        then
+        [...]
+     b. Else,
+        i. Let v be ? ToPrimitive(value).
+
+    ES6 Section 7.1.1 ToPrimitive ( input [, PreferredType] )
+
+    [...]
+    4. Let exoticToPrim be GetMethod(input, @@toPrimitive).
+    5. ReturnIfAbrupt(exoticToPrim).
+features: [Symbol.toPrimitive]
+---*/
+
+var y = Object.defineProperty({}, Symbol.toPrimitive, {
+  get: function() {
+    throw new Test262Error();
+  }
+});
+
+assert.throws(Test262Error, function() {
+  new Date(y);
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/value-symbol-to-prim-err.js b/js/src/tests/test262/built-ins/Date/value-symbol-to-prim-err.js
new file mode 100644
index 0000000000..aa944bb968
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/value-symbol-to-prim-err.js
@@ -0,0 +1,37 @@
+// Copyright (c) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date-value
+description: >
+  Behavior when error thrown by invocation of `Symbol.toPrimitive` method
+  during coercion
+info: |
+  [...]
+  3. If NewTarget is not undefined, then
+     a. If Type(value) is Object and value has a [[DateValue]] internal slot,
+        then
+        [...]
+     b. Else,
+        i. Let v be ? ToPrimitive(value).
+
+    ES6 Section 7.1.1 ToPrimitive ( input [, PreferredType] )
+
+    [...]
+    4. Let exoticToPrim be GetMethod(input, @@toPrimitive).
+    5. ReturnIfAbrupt(exoticToPrim).
+    6. If exoticToPrim is not undefined, then
+       a. Let result be Call(exoticToPrim, input, «hint»).
+       b. ReturnIfAbrupt(result).
+features: [Symbol.toPrimitive]
+---*/
+
+var y = {};
+y[Symbol.toPrimitive] = function() {
+  throw new Test262Error();
+};
+
+assert.throws(Test262Error, function() {
+  new Date(y);
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/value-symbol-to-prim-invocation.js b/js/src/tests/test262/built-ins/Date/value-symbol-to-prim-invocation.js
new file mode 100644
index 0000000000..55f8505df2
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/value-symbol-to-prim-invocation.js
@@ -0,0 +1,49 @@
+// copyright (c) 2016 the v8 project authors. all rights reserved.
+// this code is governed by the bsd license found in the license file.
+/*---
+esid: sec-date-value
+description: Invocation of `Symbol.toPrimitive` method
+info: |
+  [...]
+  3. If NewTarget is not undefined, then
+     a. If Type(value) is Object and value has a [[DateValue]] internal slot,
+        then
+        [...]
+     b. Else,
+        i. Let v be ? ToPrimitive(value).
+        [...]
+
+    ES6 Section 7.1.1 ToPrimitive ( input [, PreferredType] )
+
+    1. If PreferredType was not passed, let hint be "default".
+    [...]
+    4. Let exoticToPrim be GetMethod(input, @@toPrimitive).
+    5. ReturnIfAbrupt(exoticToPrim).
+    6. If exoticToPrim is not undefined, then
+       a. Let result be Call(exoticToPrim, input, «hint»).
+       [...]
+features: [Symbol.toPrimitive]
+---*/
+
+var y = {};
+var callCount = 0;
+var thisVal, args;
+
+y[Symbol.toPrimitive] = function() {
+  callCount += 1;
+  thisVal = this;
+  args = arguments;
+};
+
+new Date(y);
+
+assert.sameValue(callCount, 1, 'method invoked exactly once');
+assert.sameValue(thisVal, y, '`this` value is the object being compared');
+assert.sameValue(args.length, 1, 'method invoked with exactly one argument');
+assert.sameValue(
+  args[0],
+  'default',
+  'method invoked with the string "default" as the first argument'
+);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/value-symbol-to-prim-return-obj.js b/js/src/tests/test262/built-ins/Date/value-symbol-to-prim-return-obj.js
new file mode 100644
index 0000000000..68fc7443d1
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/value-symbol-to-prim-return-obj.js
@@ -0,0 +1,48 @@
+// copyright (c) 2016 the v8 project authors. all rights reserved.
+// this code is governed by the bsd license found in the license file.
+/*---
+esid: sec-date-value
+description: >
+    Behavior when coercion via `Symbol.toPrimitive` yields an Object
+info: |
+  [...]
+  3. If NewTarget is not undefined, then
+     a. If Type(value) is Object and value has a [[DateValue]] internal slot,
+        then
+        [...]
+     b. Else,
+        i. Let v be ? ToPrimitive(value).
+
+    ES6 Section 7.1.1 ToPrimitive ( input [, PreferredType] )
+
+    [...]
+    4. Let exoticToPrim be GetMethod(input, @@toPrimitive).
+    5. ReturnIfAbrupt(exoticToPrim).
+    6. If exoticToPrim is not undefined, then
+       a. Let result be Call(exoticToPrim, input, «hint»).
+       b. ReturnIfAbrupt(result).
+       c. If Type(result) is not Object, return result.
+       d. Throw a TypeError exception.
+features: [Symbol.toPrimitive]
+---*/
+
+var y = {};
+var retVal;
+
+y[Symbol.toPrimitive] = function() {
+  return retVal;
+};
+
+retVal = {};
+assert.throws(TypeError, function() {
+  new Date(y);
+}, 'ordinary object');
+
+retVal = (function() {
+  return arguments;
+}());
+assert.throws(TypeError, function() {
+  new Date(y);
+}, 'arguments exotic object');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/value-symbol-to-prim-return-prim.js b/js/src/tests/test262/built-ins/Date/value-symbol-to-prim-return-prim.js
new file mode 100644
index 0000000000..de2cf4367b
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/value-symbol-to-prim-return-prim.js
@@ -0,0 +1,46 @@
+// Copyright (c) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date-value
+description: >
+    Behavior when coercion via `Symbol.toPrimitive` yields a primitive value
+info: |
+  [...]
+  3. If NewTarget is not undefined, then
+     a. If Type(value) is Object and value has a [[DateValue]] internal slot,
+        then
+        [...]
+     b. Else,
+        i. Let v be ? ToPrimitive(value).
+
+    ES6 Section 7.1.1 ToPrimitive ( input [, PreferredType] )
+
+    [...]
+    4. Let exoticToPrim be GetMethod(input, @@toPrimitive).
+    5. ReturnIfAbrupt(exoticToPrim).
+    6. If exoticToPrim is not undefined, then
+       a. Let result be Call(exoticToPrim, input, «hint»).
+       b. ReturnIfAbrupt(result).
+       c. If Type(result) is not Object, return result.
+features: [Symbol.toPrimitive]
+---*/
+
+var y = {};
+var retVal;
+
+y[Symbol.toPrimitive] = function() {
+  return retVal;
+};
+
+retVal = 1234;
+assert.sameValue(new Date(y).valueOf(), 1234);
+
+retVal = '2016-06-03T19:03:52.872Z';
+assert.sameValue(new Date(y).valueOf(), 1464980632872);
+
+retVal = Symbol.toPrimitive;
+assert.throws(TypeError, function() {
+  new Date(y);
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/value-to-primitive-call-err.js b/js/src/tests/test262/built-ins/Date/value-to-primitive-call-err.js
new file mode 100644
index 0000000000..3a489f3860
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/value-to-primitive-call-err.js
@@ -0,0 +1,29 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date-value
+description: Error invoking `Symbol.toPrimitive` method of object value
+info: |
+  3. If NewTarget is not undefined, then
+     a. If Type(value) is Object and value has a [[DateValue]] internal slot, then
+        i. Let tv be thisTimeValue(value).
+     b. Else,
+        i. Let v be ? ToPrimitive(value).
+
+  ToPrimitive ( input [ , PreferredType ] )
+
+  [...]
+  4. Let exoticToPrim be ? GetMethod(input, @@toPrimitive).
+features: [Symbol.toPrimitive]
+---*/
+
+var badToPrimitive = {};
+badToPrimitive[Symbol.toPrimitive] = function() {
+  throw new Test262Error();
+};
+
+assert.throws(Test262Error, function() {
+  new Date(badToPrimitive);
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/value-to-primitive-call.js b/js/src/tests/test262/built-ins/Date/value-to-primitive-call.js
new file mode 100644
index 0000000000..a85d3ebd29
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/value-to-primitive-call.js
@@ -0,0 +1,43 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date-value
+description: Invocation of `Symbol.toPrimitive` method of object value
+info: |
+  3. If NewTarget is not undefined, then
+     a. If Type(value) is Object and value has a [[DateValue]] internal slot, then
+        i. Let tv be thisTimeValue(value).
+     b. Else,
+        i. Let v be ? ToPrimitive(value).
+        [...]
+
+
+  ToPrimitive ( input [ , PreferredType ] )
+
+  1. If PreferredType was not passed, let hint be "default".
+  2. Else if PreferredType is hint String, let hint be "string".
+  3. Else PreferredType is hint Number, let hint be "number".
+  4. Let exoticToPrim be ? GetMethod(input, @@toPrimitive).
+  5. If exoticToPrim is not undefined, then
+     a. Let result be ? Call(exoticToPrim, input, « hint »).
+     [...]
+features: [Symbol.toPrimitive]
+---*/
+
+var spyToPrimitive = {};
+var callCount = 0;
+var thisValue, args;
+spyToPrimitive[Symbol.toPrimitive] = function() {
+  thisValue = this;
+  args = arguments;
+  callCount += 1;
+};
+
+new Date(spyToPrimitive);
+
+assert.sameValue(callCount, 1, 'function invoked exactly once');
+assert.sameValue(thisValue, spyToPrimitive, 'function "this" value');
+assert.sameValue(args.length, 1, 'function invoked with exactly one argument');
+assert.sameValue(args[0], 'default', 'argument value');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/value-to-primitive-get-meth-err.js b/js/src/tests/test262/built-ins/Date/value-to-primitive-get-meth-err.js
new file mode 100644
index 0000000000..164ec4ba6f
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/value-to-primitive-get-meth-err.js
@@ -0,0 +1,37 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date-value
+description: Error retrieving `Symbol.toPrimitive` method from object value
+info: |
+  3. If NewTarget is not undefined, then
+     a. If Type(value) is Object and value has a [[DateValue]] internal slot, then
+        i. Let tv be thisTimeValue(value).
+     b. Else,
+        i. Let v be ? ToPrimitive(value).
+        [...]
+features: [Symbol.toPrimitive]
+---*/
+
+var poisonedObject = {};
+var poisonedDate = new Date();
+Object.defineProperty(poisonedObject, Symbol.toPrimitive, {
+  get: function() {
+    throw new Test262Error();
+  }
+});
+Object.defineProperty(poisonedDate, Symbol.toPrimitive, {
+  get: function() {
+    throw new Test262Error();
+  }
+});
+
+Date(poisonedObject);
+
+new Date(poisonedDate);
+
+assert.throws(Test262Error, function() {
+  new Date(poisonedObject);
+});
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/value-to-primitive-result-faulty.js b/js/src/tests/test262/built-ins/Date/value-to-primitive-result-faulty.js
new file mode 100644
index 0000000000..a0478b66a6
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/value-to-primitive-result-faulty.js
@@ -0,0 +1,49 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date-value
+description: Exotic `Symbol.toPrimitive` method returns a non-primitive
+info: |
+  3. If NewTarget is not undefined, then
+     a. If Type(value) is Object and value has a [[DateValue]] internal slot, then
+        i. Let tv be thisTimeValue(value).
+     b. Else,
+        i. Let v be ? ToPrimitive(value).
+
+  ToPrimitive ( input [ , PreferredType ] )
+
+  1. If PreferredType was not passed, let hint be "default".
+  2. Else if PreferredType is hint String, let hint be "string".
+  3. Else PreferredType is hint Number, let hint be "number".
+  4. Let exoticToPrim be ? GetMethod(input, @@toPrimitive).
+  5. If exoticToPrim is not undefined, then
+     a. Let result be ? Call(exoticToPrim, input, « hint »).
+     b. If Type(result) is not Object, return result.
+     c. Throw a TypeError exception.
+features: [Symbol.toPrimitive]
+---*/
+
+var faultyToPrimitive = {};
+var returnValue;
+faultyToPrimitive[Symbol.toPrimitive] = function() {
+  return returnValue;
+};
+
+returnValue = {};
+assert.throws(TypeError, function() {
+  new Date(faultyToPrimitive);
+}, 'ordinary object');
+
+returnValue = [];
+assert.throws(TypeError, function() {
+  new Date(faultyToPrimitive);
+}, 'Array exotic object');
+
+returnValue = (function() {
+  return arguments;
+}());
+assert.throws(TypeError, function() {
+  new Date(faultyToPrimitive);
+}, 'arguments exotic object');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/value-to-primitive-result-non-string-prim.js b/js/src/tests/test262/built-ins/Date/value-to-primitive-result-non-string-prim.js
new file mode 100644
index 0000000000..8be468338e
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/value-to-primitive-result-non-string-prim.js
@@ -0,0 +1,57 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date-value
+description: >
+  Exotic `Symbol.toPrimitive` method returns a primitive value other than a
+  string
+info: |
+  3. If NewTarget is not undefined, then
+     a. If Type(value) is Object and value has a [[DateValue]] internal slot, then
+        i. Let tv be thisTimeValue(value).
+     b. Else,
+        i. Let v be ? ToPrimitive(value).
+        ii. If Type(v) is String, then
+            1. Let tv be the result of parsing v as a date, in exactly the same
+               manner as for the parse method (20.3.3.2). If the parse resulted
+               in an abrupt completion, tv is the Completion Record.
+
+  ToPrimitive ( input [ , PreferredType ] )
+
+  1. If PreferredType was not passed, let hint be "default".
+  2. Else if PreferredType is hint String, let hint be "string".
+  3. Else PreferredType is hint Number, let hint be "number".
+  4. Let exoticToPrim be ? GetMethod(input, @@toPrimitive).
+  5. If exoticToPrim is not undefined, then
+     a. Let result be ? Call(exoticToPrim, input, « hint »).
+     b. If Type(result) is not Object, return result.
+features: [Symbol.toPrimitive]
+---*/
+
+var toPrimitive = {};
+var returnValue;
+toPrimitive[Symbol.toPrimitive] = function() {
+  return returnValue;
+};
+
+returnValue = 8;
+assert.sameValue(new Date(toPrimitive).getTime(), 8, 'number');
+
+returnValue = undefined;
+assert.sameValue(new Date(toPrimitive).getTime(), NaN, 'undefined');
+
+returnValue = true;
+assert.sameValue(new Date(toPrimitive).getTime(), 1, 'boolean `true`');
+
+returnValue = false;
+assert.sameValue(new Date(toPrimitive).getTime(), 0, 'boolean `false`');
+
+returnValue = null;
+assert.sameValue(new Date(toPrimitive).getTime(), 0, 'null');
+
+returnValue = Symbol.toPrimitive;
+assert.throws(TypeError, function() {
+  new Date(toPrimitive);
+}, 'symbol');
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/value-to-primitive-result-string.js b/js/src/tests/test262/built-ins/Date/value-to-primitive-result-string.js
new file mode 100644
index 0000000000..0d49d2f0d5
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/value-to-primitive-result-string.js
@@ -0,0 +1,36 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-date-value
+description: Exotic `Symbol.toPrimitive` method returns a String value
+info: |
+  3. If NewTarget is not undefined, then
+     a. If Type(value) is Object and value has a [[DateValue]] internal slot, then
+        i. Let tv be thisTimeValue(value).
+     b. Else,
+        i. Let v be ? ToPrimitive(value).
+        ii. If Type(v) is String, then
+            1. Let tv be the result of parsing v as a date, in exactly the same
+               manner as for the parse method (20.3.3.2). If the parse resulted
+               in an abrupt completion, tv is the Completion Record.
+
+  ToPrimitive ( input [ , PreferredType ] )
+
+  1. If PreferredType was not passed, let hint be "default".
+  2. Else if PreferredType is hint String, let hint be "string".
+  3. Else PreferredType is hint Number, let hint be "number".
+  4. Let exoticToPrim be ? GetMethod(input, @@toPrimitive).
+  5. If exoticToPrim is not undefined, then
+     a. Let result be ? Call(exoticToPrim, input, « hint »).
+     b. If Type(result) is not Object, return result.
+features: [Symbol.toPrimitive]
+---*/
+
+var stringToPrimitive = {};
+stringToPrimitive[Symbol.toPrimitive] = function() {
+  return '2016-06-05T18:40:00.000Z';
+};
+
+assert.sameValue(new Date(stringToPrimitive).getTime(), 1465152000000);
+
+reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Date/year-zero.js b/js/src/tests/test262/built-ins/Date/year-zero.js
new file mode 100644
index 0000000000..d00d7ceeb7
--- /dev/null
+++ b/js/src/tests/test262/built-ins/Date/year-zero.js
@@ -0,0 +1,22 @@
+// Copyright (C) 2022 Igalia, S.L. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-expanded-years
+description: Negative zero, as an extended year, is rejected
+info: |
+  The year 0 is considered positive and must be prefixed with a + sign. The
+  representation of the year 0 as -000000 is invalid.
+---*/
+
+const invalidStrings = [
+  "-000000-03-31T00:45Z",
+  "-000000-03-31T01:45",
+  "-000000-03-31T01:45:00+01:00"
+];
+
+for (const str of invalidStrings) {
+  assert.sameValue(+new Date(str), NaN, "reject minus zero as extended year");
+}
+
+reportCompare(0, 0);