GNU bug report logs - #43828
invalid date converting from UTC, near DST

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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#43828: closed (invalid date converting from UTC, near DST)
Date: Tue, 06 Oct 2020 17:29:02 +0000

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Your message dated Tue, 6 Oct 2020 10:28:07 -0700
with message-id <b344c07f-dd7c-247c-e454-8227236df1e1 <at> cs.ucla.edu>
and subject line Re: bug#43828: invalid date converting from UTC, near DST
has caused the debbugs.gnu.org bug report #43828,
regarding invalid date converting from UTC, near DST
to be marked as done.

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


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From: "Martin Fido" <mart <at> fidolab.org>
To: bug-coreutils <at> gnu.org
Subject: invalid date converting from UTC, near DST
Date: Tue, 06 Oct 2020 22:24:03 +1100

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Hi,

I seem to have found a bug in the date utility, converting from UTC to Sydney time. It returns invalid date for what should be perfectly valid:

    $ TZ='Australia/Sydney' date -d '2020-10-04T02:00:00Z'
    date: invalid date ‘2020-10-04T02:00:00Z’

    $ TZ='Australia/Sydney' date -d '2020-10-04T02:59:59Z'
    date: invalid date ‘2020-10-04T02:59:59Z’

Note DST in Sydney changed 10 hours earlier:

    $ TZ='Australia/Sydney' date -d '2020-10-03T15:59:59Z'
    Sunday 4 October  01:59:59 AEST 2020

    $ TZ='Australia/Sydney' date -d '2020-10-03T16:00:00Z'
    Sunday 4 October  03:00:00 AEDT 2020

I have version 8.25:

    $ date --version
    date (GNU coreutils) 8.25
    Copyright (C) 2016 Free Software Foundation, Inc.
    License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.
    This is free software: you are free to change and redistribute it.
    There is NO WARRANTY, to the extent permitted by law.

    Written by David MacKenzie.

Thanks,

Martin.

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From: Paul Eggert <eggert <at> cs.ucla.edu>
To: Martin Fido <mart <at> fidolab.org>
Cc: 43828-done <at> debbugs.gnu.org
Subject: Re: bug#43828: invalid date converting from UTC, near DST
Date: Tue, 6 Oct 2020 10:28:07 -0700

On 10/6/20 4:24 AM, Martin Fido wrote:
> I have version 8.25:

Seems to have been fixed by coreutils 8.30:

$ TZ='Australia/Sydney' date -d '2020-10-04T02:00:00Z'
Sun 04 Oct 2020 01:00:00 PM AEDT

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