On Tue, 31 Oct 2006 09:24:02 +0000 (GMT),
Prof Brian Ripley <[EMAIL PROTECTED]> wrote:

[...]

> No, it should be a timezone, and the timezone specification includes
> when DST is in effect.  See ?as.POSIXct for details and references of
> timezones.  For example, EST is a timezone without DST and EST5EDT is a
> timezone with DST (and they agree in winter). It looks like Linux is
> interpreting EEST as UTC+3 throughout the year (which appears not to be
> used anywhere as an actual timezone).  So the behaviour is clear: EEST
> does not have DST, and $isdst == 0 in that 'timezone', whereas EET does
> have DST.

Thanks for this explanation.  Very important to check whether the supplied
'tz' is really interpreted as a valid time zone by the OS!


Cheers,

-- 
Seb

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