<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <HTML ><HEAD ><TITLE >pg_timezone_names</TITLE ><META NAME="GENERATOR" CONTENT="Modular DocBook HTML Stylesheet Version 1.79"><LINK REV="MADE" HREF="mailto:pgsql-docs@postgresql.org"><LINK REL="HOME" TITLE="PostgreSQL 8.4.12 Documentation" HREF="index.html"><LINK REL="UP" TITLE="System Catalogs" HREF="catalogs.html"><LINK REL="PREVIOUS" TITLE="pg_timezone_abbrevs" HREF="view-pg-timezone-abbrevs.html"><LINK REL="NEXT" TITLE="pg_user" HREF="view-pg-user.html"><LINK REL="STYLESHEET" TYPE="text/css" HREF="stylesheet.css"><META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=ISO-8859-1"><META NAME="creation" CONTENT="2012-05-31T23:30:11"></HEAD ><BODY CLASS="SECT1" ><DIV CLASS="NAVHEADER" ><TABLE SUMMARY="Header navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TH COLSPAN="5" ALIGN="center" VALIGN="bottom" >PostgreSQL 8.4.12 Documentation</TH ></TR ><TR ><TD WIDTH="10%" ALIGN="left" VALIGN="top" ><A HREF="view-pg-timezone-abbrevs.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="10%" ALIGN="left" VALIGN="top" ><A HREF="catalogs.html" >Fast Backward</A ></TD ><TD WIDTH="60%" ALIGN="center" VALIGN="bottom" >Chapter 44. System Catalogs</TD ><TD WIDTH="10%" ALIGN="right" VALIGN="top" ><A HREF="catalogs.html" >Fast Forward</A ></TD ><TD WIDTH="10%" ALIGN="right" VALIGN="top" ><A HREF="view-pg-user.html" ACCESSKEY="N" >Next</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><DIV CLASS="SECT1" ><H1 CLASS="SECT1" ><A NAME="VIEW-PG-TIMEZONE-NAMES" >44.58. <TT CLASS="STRUCTNAME" >pg_timezone_names</TT ></A ></H1 ><A NAME="AEN79670" ></A ><P > The view <TT CLASS="STRUCTNAME" >pg_timezone_names</TT > provides a list of time zone names that are recognized by <TT CLASS="COMMAND" >SET TIMEZONE</TT >, along with their associated abbreviations, UTC offsets, and daylight-savings status. Unlike the abbreviations shown in <A HREF="view-pg-timezone-abbrevs.html" ><TT CLASS="STRUCTNAME" >pg_timezone_abbrevs</TT ></A >, many of these names imply a set of daylight-savings transition date rules. Therefore, the associated information changes across local DST boundaries. The displayed information is computed based on the current value of <CODE CLASS="FUNCTION" >CURRENT_TIMESTAMP</CODE >. </P ><DIV CLASS="TABLE" ><A NAME="AEN79678" ></A ><P ><B >Table 44-59. <TT CLASS="STRUCTNAME" >pg_timezone_names</TT > Columns</B ></P ><TABLE BORDER="1" CLASS="CALSTABLE" ><COL><COL><COL><THEAD ><TR ><TH >Name</TH ><TH >Type</TH ><TH >Description</TH ></TR ></THEAD ><TBODY ><TR ><TD ><TT CLASS="STRUCTFIELD" >name</TT ></TD ><TD ><TT CLASS="TYPE" >text</TT ></TD ><TD >Time zone name</TD ></TR ><TR ><TD ><TT CLASS="STRUCTFIELD" >abbrev</TT ></TD ><TD ><TT CLASS="TYPE" >text</TT ></TD ><TD >Time zone abbreviation</TD ></TR ><TR ><TD ><TT CLASS="STRUCTFIELD" >utc_offset</TT ></TD ><TD ><TT CLASS="TYPE" >interval</TT ></TD ><TD >Offset from UTC (positive means east of Greenwich)</TD ></TR ><TR ><TD ><TT CLASS="STRUCTFIELD" >is_dst</TT ></TD ><TD ><TT CLASS="TYPE" >boolean</TT ></TD ><TD >True if currently observing daylight savings</TD ></TR ></TBODY ></TABLE ></DIV ></DIV ><DIV CLASS="NAVFOOTER" ><HR ALIGN="LEFT" WIDTH="100%"><TABLE SUMMARY="Footer navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" ><A HREF="view-pg-timezone-abbrevs.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="index.html" ACCESSKEY="H" >Home</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" ><A HREF="view-pg-user.html" ACCESSKEY="N" >Next</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" ><TT CLASS="STRUCTNAME" >pg_timezone_abbrevs</TT ></TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="catalogs.html" ACCESSKEY="U" >Up</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" ><TT CLASS="STRUCTNAME" >pg_user</TT ></TD ></TR ></TABLE ></DIV ></BODY ></HTML >