On Thu, 10 Mar 2005, Paul Eggert wrote:
Alois Treindl <alois@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 allows. -dave /*=================================================== VegGuide.Org www.BookIRead.com Your guide to all that's veg. My book blog ===================================================*/