On Thu, Apr 7, 2022 at 11:34 AM Derick Rethans <der...@php.net> wrote:
> Hi! > > As you might be aware, I maintain the date time support in PHP. As part > of that I regularly have to update the rules that timezones employ - > changes in Daylight Saving Time rules, or other changes to rules due to > political foibles. > > In the last few years, the maintainer of the Iana TZ Data project has > diverged somewhat from the consensus of the community, and degraded some > data by no longer having an entry for each country and merged timezones > where data does not differ since 1970. (Removing transitions from these > regions where data **does** differ before 1970, even if these were > available). > > Java's date/time maintainer has created a fork based on the original > Iana TZ data to put back some of the removed/deprecated data to better > serve their users, and I would think that this is also best suited as a > data set for PHP. > > If you want to read about the intricacies, see: > https://github.com/JodaOrg/global-tz#rationale > > But this does mean a divergence from the "official" TZ data, although > Joda's data is arguably better. My recommendation is that from the 2022b > release we switch to Joda's version. (I will today merge in the 2022a > data from the Iana source.) > > Comments? > > If you want to discuss this live, come find me in "Room 11": > https://chat.stackoverflow.com/rooms/11/php > > cheers, > Derick > Keeping in mind that people deploying PHP on Linux usually end up using OS-provided zoneinfo, do you know which source distros base that on? I think we should follow the distro-consensus here, whatever that may be. Regards, Nikita
