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doc: remove mention of UT1 in representing time

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UT1 was incorrectly specified as our time representation.  (UT1 is
astronomical time.)  We are not actually UTC either because we ignore
leap seconds.

Reported-by: Thomas Munro

Discussion: CAEepm=3-TW9PLwGZhqjSSiEQ9UzJEKE-HELQDzRE0QUSCp8dgw@mail.gmail.com
This commit is contained in:
Bruce Momjian 2016-06-28 13:49:37 -04:00
parent c12f02ffc9
commit 675684fc23
2 changed files with 3 additions and 3 deletions
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4
doc/src/sgml/catalogs.sgml
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@ -9804,8 +9804,8 @@ SELECT * FROM pg_locks pl LEFT JOIN pg_prepared_xacts ppx
of time zone names that are recognized by <command>SET TIMEZONE</>, of time zone names that are recognized by <command>SET TIMEZONE</>,
along with their associated abbreviations, UTC offsets, along with their associated abbreviations, UTC offsets,
and daylight-savings status. (Technically, and daylight-savings status. (Technically,
<productname>PostgreSQL</productname> uses <acronym>UT1</> rather <productname>PostgreSQL</productname> does not use UTC because leap
than UTC because leap seconds are not handled.) seconds are not handled.)
Unlike the abbreviations shown in <link Unlike the abbreviations shown in <link
linkend="view-pg-timezone-abbrevs"><structname>pg_timezone_abbrevs</structname></link>, many of these names imply a set of daylight-savings transition linkend="view-pg-timezone-abbrevs"><structname>pg_timezone_abbrevs</structname></link>, many of these names imply a set of daylight-savings transition
date rules. Therefore, the associated information changes across local DST date rules. Therefore, the associated information changes across local DST

2
doc/src/sgml/func.sgml
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@ -7578,7 +7578,7 @@ SELECT EXTRACT(SECOND FROM TIME '17:12:28.5');
The time zone offset from UTC, measured in seconds. Positive values The time zone offset from UTC, measured in seconds. Positive values
correspond to time zones east of UTC, negative values to correspond to time zones east of UTC, negative values to
zones west of UTC. (Technically, zones west of UTC. (Technically,
<productname>PostgreSQL</productname> uses <acronym>UT1</> because <productname>PostgreSQL</productname> does not use UTC because
leap seconds are not handled.) leap seconds are not handled.)
</para> </para>
</listitem> </listitem>