EU BST-->GMT issue

Peter Ilieve peter at
Thu Aug 30 15:42:36 UTC 2007

> Is there a difference between the way EU runs vs how the US DST  
> runs (revision, wise, not date and time wise). I ask this only  
> because my US DST tests all worked appropriately, along with  
> outlying areas (Virgin Islands, Guam, America Samoa, etc), and the  
> EU one is the only one that acted in this behavior.

The EU rule in the tz data is unusual in specifying UTC transition  
This reflects the way the European Union politicians legislated. They
don't much care which timezone a member state is in (and the EU is
too big east to west all to be in one) but they do insist that all
member states change their clocks, and all at the same time.

If you have been used to working with the US rules, which specify
wall clock times for the transitions, then this may be what has
caused problems with your tests.

		Peter Ilieve		peter at

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