GNU bug report logs - #48353
result of date is wrong if Etc/GMT is used

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Paul Eggert <eggert <at> cs.ucla.edu>
Cc: tracker <at> debbugs.gnu.org
Subject: bug#48353: closed (result of date is wrong if Etc/GMT is used)
Date: Tue, 11 May 2021 19:09:02 +0000

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Your message dated Tue, 11 May 2021 12:08:32 -0700
with message-id <2c24ee5d-7b72-7776-7ad4-0797e0f8b576 <at> cs.ucla.edu>
and subject line Re: bug#48353: result of date is wrong if Etc/GMT is used
has caused the debbugs.gnu.org bug report #48353,
regarding result of date is wrong if Etc/GMT is used
to be marked as done.

(If you believe you have received this mail in error, please contact
help-debbugs <at> gnu.org.)


-- 
48353: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=48353
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From: Thomas Güttinger <Guettinger <at> igel.com>
To: "bug-coreutils <at> gnu.org" <bug-coreutils <at> gnu.org>
Subject: result of date is wrong if Etc/GMT is used
Date: Tue, 11 May 2021 10:17:37 +0000

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The date command inverts the sign if TZ is set with Etc/GMT.

Example:
TZ=':Etc/GMT+5' date
Result:
Di 11. Mai 05:08:48 -05 2021

Tested with version coreutils-8.28 and coreutils 8.32-1.


Thomas Güttinger
Linux Developer



Guettinger <at> igel.com<http://http//mailto:%7BE-mail%7D>
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From: Paul Eggert <eggert <at> cs.ucla.edu>
To: Thomas Güttinger <Guettinger <at> igel.com>
Cc: 48353-done <at> debbugs.gnu.org
Subject: Re: bug#48353: result of date is wrong if Etc/GMT is used
Date: Tue, 11 May 2021 12:08:32 -0700

On 5/11/21 3:17 AM, Thomas Güttinger wrote:
> The date command inverts the sign if TZ is set with Etc/GMT.

That's a feature, not a bug. The Etc zones are documented to use the 
opposite sign, to be consistent with POSIX settings like TZ='<+05>-5'.

$ date -u; TZ='<+05>-5' date; TZ=Etc/GMT-5 date
Tue May 11 19:07:34 UTC 2021
Wed May 12 00:07:34 +05 2021
Wed May 12 00:07:34 +05 2021

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