Take the 2-minute tour ×  In an JS app, I receive timestamp (eq.
1270544790922) from server (Ajax).  Basing on that timestamp I
create Date object using:  var _date = new Date();  Now, _date
decoded timestamp in current user locale time zone. I don't want
that.  I would like _date to convert this timestamp to current
time in city of Helsinki in Europe (disregarding current time
zone of the user).  How can I do that?  share|improve this
question I know that time zone offset in Helsinki is +2 in
winter and +3 in DST. But who knows when is DST? Only some
locale mechanism that is not available in JS –  warpech May 5
'10 at 9:09 It is possible, but not using native methods of
Javascript, because javascript has no method to determine a
timezone transition history of other timezone than user's
system's current timezone (and it is by the way browser
dependent at least when we go to 80's dates). But this way it is
possible: stackoverflow.com/a/12814213/1691517 and I think that
my answer gives you the correct result. –