Tools for the Daylight Saving Time?
in [Matlab]
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From: Ashley on 4 May 2010 17:39 Unfortunately, this is not as easy as it seems. It is pretty easy to get the dates where you spring forward or backward (http://www.timeanddate.com/worldclock/timezone.html?n=234&syear=1970) but there is no way to know if 1:00:00 AM through 1:59:59AM on the Fall back day is Standard Time or Daylight Saving Time. The times overlap. Example: Local time DST? Zone Event/details Sunday, October 25, 1970 at 1:59:59 AM Yes,+1hr PDT Sunday, October 25, 1970 at 1:00:00 AM No PST DST ends so you will have two October 25, 1970 at 1:00:00 AM if you were working with a time series then you could somehow account for this overlap but for a date out of context, it is impossible to tell. At least this is only a problem for that one hour on Fall back day. What a pain. Ashley nospam(a)no.spam.jkk.nl (Koen Kok) wrote in message <923FA8636jkoknospamecnnl(a)130.112.1.5>... > Hi, > > I'm looking for a function that determines whether a given datenum is in > the summertime period or in the wintertime period of the Daylight Saving > Time. > > Anyone? > > Thanks for reading. > > Koen. |