[ntp:questions] Window XP - ntp / GMT not working

David J Taylor david-taylor at blueyonder.not-this-part.nor-this.co.uk.invalid
Wed May 6 09:31:39 UTC 2009

randy wilson wrote:
> Hi,
> This has to have been solved somewhere but apparently
> my searchfu is not working well.
> I have some windows xp computers which we are syncing
> to a time server via ntp. I can see the time server
> has the correct UTC time on it and the the PCs are
> syncing to the server. I have the time zones set to
> GMT on all the PC. The problem is the time is off by
> an hour on all the PCs and I can't figure out why.
> Any pointers would be appreciated. I would really like
> to just set the PC clocks to UTC but it does not appear
> XP has that as an option but GMT should be equivalent
> I thought.
> thx
> Randy


Windows, like UNIX, works in UTC internally, as does NTP.  There is no 
need to adjust anything for NTP.  Programs can read the UTC time if they 
wish, and use UTC if they need.

Windows displays the time you choose in the Control Panel, Regional 
settings.  If you want UTC displayed, just choose a time-zone without any 
summer-time adjustment, for example:

  (GMT) Monrovia, Reykjavik

If you have the PCs set to:

  (GMT) London, Dublin, Edinburgh, Lisbon

then during the summer, they will display one hour ahead of UTC, just as 
wall-clocks would.


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