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

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Package: coreutils;

Reported by: Thomas Güttinger <Guettinger <at> igel.com>

Date: Tue, 11 May 2021 15:02:02 UTC

Severity: normal

Done: Paul Eggert <eggert <at> cs.ucla.edu>

Bug is archived. No further changes may be made.

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Report forwarded to bug-coreutils <at> gnu.org:
bug#48353; Package coreutils. (Tue, 11 May 2021 15:02:02 GMT) Full text and rfc822 format available.
Acknowledgement sent to Thomas Güttinger <Guettinger <at> igel.com>:
New bug report received and forwarded. Copy sent to bug-coreutils <at> gnu.org. (Tue, 11 May 2021 15:02:02 GMT) Full text and rfc822 format available.

Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

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

[Message part 1 (text/plain, inline)]
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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[Message part 2 (text/html, inline)]
Reply sent to Paul Eggert <eggert <at> cs.ucla.edu>:
You have taken responsibility. (Tue, 11 May 2021 19:09:02 GMT) Full text and rfc822 format available.
Notification sent to Thomas Güttinger <Guettinger <at> igel.com>:
bug acknowledged by developer. (Tue, 11 May 2021 19:09:02 GMT) Full text and rfc822 format available.

Message #10 received at 48353-done <at> debbugs.gnu.org (full text, mbox):

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
bug archived. Request was from Debbugs Internal Request <help-debbugs <at> gnu.org> to internal_control <at> debbugs.gnu.org. (Wed, 09 Jun 2021 11:24:06 GMT) Full text and rfc822 format available.
This bug report was last modified 4 years and 9 days ago.

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