From: "Geo." 

"Antti Kurenniemi"  wrote in
message news:45eaf894{at}w3.nls.net...

> No but calculations. Say you have a plane that leaves place X today at 9
> PM, and the flight takes 3 and a half hours. Now if the flight happens at
> the date when DST is applied, then it can mean the difference wether the
> plane arrives at the same night or the next day. None of this is anything
> special, but typically you use the OS provided functions for calculations
> with time and date. Now the point here is that if the OS provided
> functions do not match with reality, you may end up with incorrect results
> (plane arrival date is wrong).

Doesn't windows do all calculations in UTC? I thought everything was UTC
and only display was converted using the timezone?

Geo.

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