>> is there a standardized way to determine one's offset from gmt for a
>> given timezone?  or do i have to do it this way?
>
>I've seen code similar to yours used. Although UNIX98 defines timezone.
>I've opened a PR related to this: standards/11807.
>
>http://www.NetBSD.org/cgi-bin/query-pr-single.pl?number=11807

unix98's timezone seems infinitely more usable than the current
timezone() implementation, given that timezone() can find multiple
answers.  unix98 seems to be the answer to my question, although i
can't say i like the idea of the implementation as an "extern long
int".  hmm...research shows that struct tm contains what i'm looking
for, but perl doesn't.  *ARGH* thpt.

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