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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>51.91. pg_timezone_abbrevs</title><link rel="stylesheet" type="text/css" href="stylesheet.css" /><link rev="made" href="pgsql-docs@lists.postgresql.org" /><meta name="generator" content="DocBook XSL Stylesheets V1.79.1" /><link rel="prev" href="view-pg-tables.html" title="51.90. pg_tables" /><link rel="next" href="view-pg-timezone-names.html" title="51.92. pg_timezone_names" /></head><body id="docContent" class="container-fluid col-10"><div xmlns="http://www.w3.org/TR/xhtml1/transitional" class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="5" align="center">51.91. <code xmlns="http://www.w3.org/1999/xhtml" class="structname">pg_timezone_abbrevs</code></th></tr><tr><td width="10%" align="left"><a accesskey="p" href="view-pg-tables.html" title="51.90. pg_tables">Prev</a> </td><td width="10%" align="left"><a accesskey="u" href="catalogs.html" title="Chapter 51. System Catalogs">Up</a></td><th width="60%" align="center">Chapter 51. System Catalogs</th><td width="10%" align="right"><a accesskey="h" href="index.html" title="PostgreSQL 13.4 Documentation">Home</a></td><td width="10%" align="right"> <a accesskey="n" href="view-pg-timezone-names.html" title="51.92. pg_timezone_names">Next</a></td></tr></table><hr></hr></div><div class="sect1" id="VIEW-PG-TIMEZONE-ABBREVS"><div class="titlepage"><div><div><h2 class="title" style="clear: both">51.91. <code class="structname">pg_timezone_abbrevs</code></h2></div></div></div><a id="id-1.10.4.93.2" class="indexterm"></a><p>
The view <code class="structname">pg_timezone_abbrevs</code> provides a list
of time zone abbreviations that are currently recognized by the datetime
input routines. The contents of this view change when the
<a class="xref" href="runtime-config-client.html#GUC-TIMEZONE-ABBREVIATIONS">timezone_abbreviations</a> run-time parameter is modified.
</p><div class="table" id="id-1.10.4.93.4"><p class="title"><strong>Table 51.92. <code class="structname">pg_timezone_abbrevs</code> Columns</strong></p><div class="table-contents"><table class="table" summary="pg_timezone_abbrevs Columns" border="1"><colgroup><col /></colgroup><thead><tr><th class="catalog_table_entry"><p class="column_definition">
Column Type
</p>
<p>
Description
</p></th></tr></thead><tbody><tr><td class="catalog_table_entry"><p class="column_definition">
<code class="structfield">abbrev</code> <code class="type">text</code>
</p>
<p>
Time zone abbreviation
</p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
<code class="structfield">utc_offset</code> <code class="type">interval</code>
</p>
<p>
Offset from UTC (positive means east of Greenwich)
</p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
<code class="structfield">is_dst</code> <code class="type">bool</code>
</p>
<p>
True if this is a daylight-savings abbreviation
</p></td></tr></tbody></table></div></div><br class="table-break" /><p>
While most timezone abbreviations represent fixed offsets from UTC,
there are some that have historically varied in value
(see <a class="xref" href="datetime-config-files.html" title="B.4. Date/Time Configuration Files">Section B.4</a> for more information).
In such cases this view presents their current meaning.
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