To: cygwin AT cygwin DOT com
Subject: Resetting time via time server doesn't affect cygwin 'date'
From: ht AT inf DOT ed DOT ac DOT uk (Henry S. Thompson)
Date: Wed, 30 Mar 2011 14:10:37 +0100
Message-ID: <f5bpqp8wy7m.fsf@calexico.inf.ed.ac.uk>
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I'm running 1.7.9-1 on my 64-bit Windows 7 laptop.  I recently noticed
that my box was 15 seconds adrift from my Linux desktop.  After some
minor hassles, I was able to use Clock/Date and Time/Internet
Time/Change Settings/Update now to sync with a local ntp server, the
same one my desktop is using.  At this point the Windows clock on the
laptop and my desktop were in sync, but 'date' from a bash window was
_still_ 15 seconds out.

Is this a pervasive problem (to test this yourself, just use the
Windows UI to set your clock forward a minute, test the 'date' (it
should be as per Windows clock), then use the above path to resync
with a time server, and observe that 'date' is _not_ adjusted back),
or particular to Windows 7/Cygwin 1.7.9?

I found vsntp [1] which fixed the problem, but is as far as I can see
overkill as it's designed to fix a much more serious problem . . .

ht

[1] http://www.imacat.idv.tw/tech/vsntp.html
-- 
       Henry S. Thompson, School of Informatics, University of Edinburgh
      10 Crichton Street, Edinburgh EH8 9AB, SCOTLAND -- (44) 131 650-4440
                Fax: (44) 131 651-1426, 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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