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Subject:	Re: 64-bit Heimdal/Cygwin, clock, daylight savings conundrum
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From:	ht AT inf DOT ed DOT ac DOT uk (Henry S. Thompson)
Date:	Wed, 09 Apr 2014 15:20:27 +0100
In-Reply-To:	<1142907573.20140409172230@yandex.ru> (Andrey Repin's message of "Wed\, 9 Apr 2014 17\:22\:30 +0400")
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Andrey Repin writes:

>> I'm in the UK, where summer time started 10 days ago.
>
>> My Windows 8.1 laptop correctly gained an hour at that time.
>
>> Yesterday it gained _another_ hour :-(.
>
> This is suspicious. I hope, there was no changes to DST dates in UK recently?

No, moved by one day from 31/3 in 2013 to 30/3 just now.

> How does it appear to you?
> I.e. if your time zone in Windows set correctly, what time the system clock
> show, and how it is converted to UTC?

Windows thinks I'm in (UTC) Dublin, Edinburgh, Lisbon, London, which
is correct.  Windows shows the correct time, as does Cygwin 'date' 

> Do you have real time synchronization set up?

Yes, that's how I got the time fixed.  I'm running ntpd from the
Meinberg distribution.

> Could it be a server issue at this point? Is it in the same timezone, as
> yourself?

No -- same timezone, we're all in the same city, Edinburgh.  I'm not
aware of anyone else with this problem.

>> So I went to work on what I thought was the underlying problem, the
>> mistaken time.  Fixed that, eventually, by fiddling with BIOS clock
>> and its relation to the system clock.
>
>> But the kinit problem didn't go away.
>
>> However, _if_ I set the time one hour forward again, kinit succeeds.
>
>> True weirdness follows.  I have 32-bit install as well (for xemacs)
>> (Cygcheck attached to previous message).  Problem does _not_ manifest
>> itself there.  kinit works _regardless_ of what the windows clock
>> says.

Note that I can't reproduce this anymore :-(.  That is, 32-bit and
64-bit now both require the time to be one hour forward of the correct
time for kinit to work.

ht
-- 
       Henry S. Thompson, School of Informatics, University of Edinburgh
      10 Crichton Street, Edinburgh EH8 9AB, SCOTLAND -- (44) 131 650-4440
                Fax: (44) 131 650-4587, e-mail: ht AT inf DOT ed DOT ac DOT uk
                       URL: http://www.ltg.ed.ac.uk/~ht/
 [mail from me _always_ has a .sig like this -- mail without it is forged spam]

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