TIMEZONE names

From: PG Doc comments form <noreply(at)postgresql(dot)org>
To: pgsql-docs(at)lists(dot)postgresql(dot)org
Cc: nat(at)makarevitch(dot)org
Subject: TIMEZONE names
Date: 2021-06-12 15:21:31
Message-ID: 162351129153.14472.70810183330436056@wrigleys.postgresql.org
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The following documentation comment has been logged on the website:

Page: https://www.postgresql.org/docs/13/datatype-datetime.html
Description:

The documentation states that some timezone names are recognized. As far as
I understand others aren't.

This seems to be true:
$psql postgres -c "set TIMEZONE='bug' ; show timezone;"
ERROR: invalid value for parameter "TimeZone": "bug"
$ echo $?
1

However adding a correct numerical offset leads Postgresql to accept a
non-existing timezone name:
$ psql postgres -c "set TIMEZONE='bug-1' ; show timezone;"
$ echo $?
0

Thank you.

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