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Date:	Sun, 30 Apr 2017 16:19:08 -0700 (PDT)
From:	Steven Penny <svnpenn AT gmail DOT com>
X-Google-Original-From:	Steven Penny
To:	cygwin AT cygwin DOT com
Subject:	Re: Time zone bug
References:	<31d25ae6-b4f1-54cf-5582-810eeedcd8d3 AT cornell DOT edu>
User-Agent:	Tryst/2.0.1 (github.com/svnpenn/tryst)

On Sun, 30 Apr 2017 17:37:00, Ken Brown wrote:
> As a result of a failing emacs test, I came across the following:
> 
> $ TZ='NZST-12NZDT,M9.5.0,M4.1.0/3' date -d AT 0 +'%Y-%m-%d %H:%M:%S %z (%Z)'
> 1970-01-01 12:00:00 +1200 (NZST)
> 
> The same command on Linux yields "1970-01-01 13:00:00 +1300 (NZDT)", which is
> correct according to Paul Eggert
> (https://lists.gnu.org/archive/html/emacs-devel/2017-04/msg00881.html).

I concur, here is non-esoteric example Linux:

    $ TZ=Pacific/Auckland date +%Z
    NZST

    $ TZ=NZST date +%Z
    NZST

    $ TZ=NZDT date +%Z
    NZDT

Cygwin:

    $ TZ=Pacific/Auckland date +%Z
    NZST

    $ TZ=NZST date +%Z
    GMT

    $ TZ=NZDT date +%Z
    GMT


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