Op 5-11-2015 om 00:06 schreef Kevin Kofler:
Welbourne Edward wrote:
I'm looking into QTBUG-49008 and need to work out how diverse
implementations of mktime handle DST transitions: at one end of the year
there's a gap (where 1:59 is followed by 3:00), at the other end there's
a duplicated hour (where 2:59 is followed by a reprise of 2:00 in
Europe, or 1:59 by 1:00 in the USA, IIUC). While we still need to work
out what behaviour *we* want to give, implementing it is going to depend
on knowing what the platform mktime gives us to work with.
The EU actually defines the switchover time in UTC, so which hour is
duplicated depends on the actual time zone. It's the 3:mm hour in CET/CEST.
Nonsense*. I live in the CET (Netherlands), I am 100% sure that the hour
duplicated is the 2:mm range, not the 3:mm range. At 03:00, the time is
reset to 02:00 entering winter time again. That happened last October
25. Going to summer time, the hour skipped is the 2:mm range also.
André
*) At least in so far the actual clock time in the country is concerned.
Perhaps for other purposes the EU defines a single switchover moment for
the whole of the EU? That is pure speculation though.
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