postgres.git / summary / log / commit / refs
commit 824df1cccb74f5f634439ecf6c9828fea6ecc3ef
Author: Tom Lane <tgl@sss.pgh.pa.us>
Date: Wed Apr 28 14:03:28 2021 +0000
First released in: 14.0, 9.6.22, 10.17, 11.12, 12.7, 13.3
Doc: fix discussion of how to get real Julian Dates.
Somehow I'd convinced myself that rotating to UTC-12 was the way
to do this, but upon further review, it's definitely UTC+12.
Discussion: https://postgr.es/m/1197050.1619123213@sss.pgh.pa.us
doc/src/sgml/datetime.sgml | 14 +++++++-------
1 file changed, 7 insertions(+), 7 deletions(-)
diff --git a/doc/src/sgml/datetime.sgml b/doc/src/sgml/datetime.sgml
index b543f64b651..b2f29e62284 100644
--- a/doc/src/sgml/datetime.sgml
+++ b/doc/src/sgml/datetime.sgml
@@ -930,22 +930,22 @@ $ <userinput>cal 9 1752</userinput>
<para>
This definition does, however, provide a way to obtain the astronomical
definition when you need it: do the arithmetic in time
- zone <literal>UTC-12</literal>. For example,
+ zone <literal>UTC+12</literal>. For example,
<programlisting>
-=> SELECT extract(julian from '2021-06-23 7:00:00-04'::timestamptz at time zone 'UTC-12');
+=> SELECT extract(julian from '2021-06-23 7:00:00-04'::timestamptz at time zone 'UTC+12');
date_part
--------------------
- 2459389.9583333335
+ 2459388.9583333335
(1 row)
-=> SELECT extract(julian from '2021-06-23 8:00:00-04'::timestamptz at time zone 'UTC-12');
+=> SELECT extract(julian from '2021-06-23 8:00:00-04'::timestamptz at time zone 'UTC+12');
date_part
-----------
- 2459390
+ 2459389
(1 row)
-=> SELECT extract(julian from date '2021-06-24');
+=> SELECT extract(julian from date '2021-06-23');
date_part
-----------
- 2459390
+ 2459389
(1 row)
</programlisting>
</para>
[parent: 85a3e0be1e94]