Is more detailed timezone history desired?
autarch at urth.org
Thu Mar 10 22:38:01 UTC 2005
On Thu, 10 Mar 2005, Paul Eggert wrote:
> Alois Treindl <alois at astro.ch> writes:
>> Because I read in the docu that the focus of tzdata is the post-1970
>> time range, I have asked my question.
> My focus has been on the post-1970 time range mainly because I didn't
> have the resources to go back before that. POSIX specifies a 1970
> cutoff but it's pretty arbitrary. In practice the vast majority of
> POSIX systems support negative time stamps (for times before 1970), so
> it would be nice to get things "right" on such hosts (for people who
> prefer such things).
Plus the data can be used for other projects. For the Perl DateTime code
I maintain, I use the Olson DB files to generate TZ change data as Perl
modules. Since I'm not using an epoch-based time representation, the
min/max limits on date ranges are much, much bigger than a 32-bit epoch
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