Re: CET timezone
[email protected] (Dave Rolsky)
| Newsgroups | perl.datetime |
|---|---|
| Message-ID | <[email protected]> |
On Mon, 18 Aug 2008, Ton Voon wrote: > I can understand the arguments about EST, but if there's no ambiguity about > CET, would it be correct to add that in? I note that EST, MST and HST are > supported timezones: http://search.cpan.org/dist/DateTime-TimeZone/. > > If it is just a case of adding CET in, I'll happily spend the time to do it, > provide a patch and document the steps required. But I'm just trying to > understand the arguments against this first. The EST, MST, and HST aliases all come from the Olson database. I have added a few aliases myself in the DT::TZ distro, but in this case I'd be a little leary. The problem is that CET could map to many, many different time zones including Europe/Paris, Europe/Vienna, Europe/Tirane, and many more. At the present time, all of these time zones follow the same rules, but they did not do so in the past, and there's no guarantee that they will in the future. What's weird is that there is a CET zone in the Olson database. Unfortunately, it maps to the C-Eur rules, not the EU rules, and I think they're just slightly different for modern time zones. Apparently I'd been excluding them for some reason. I wish I remembered why. I guess I could add them back. Whatever this Solaris box returns for CET comes from the Olson database, so the sysadmin shouldn't be surprised by what DT::TZ does either. -dave /*========================== VegGuide.Org Your guide to all that's veg ==========================*/