On 11/24/22 11:25, Jonas Nyrup via tz wrote:
On last Saturday in October 2023 when DST ends America/Nuuk will switch from -03/-02 to -02/-01
Thanks for the heads-up. Somehow I missed your email at first, and in response to Jürgen Appel's later email <https://mm.icann.org/pipermail/tz/2022-November/032343.html>, three days ago I installed a patch <https://mm.icann.org/pipermail/tz/2022-November/032344.html> guessing that the Nuuk and Ittoqqortoormiit areas will both switch to "permanent DST" (i.e., change of standard time, and no DST) in March. However, my guess about Ittoqqortoormiit seems to have jumped the gun, as the last two paragraphs of the URL that you gave:
https://sermitsiaq.ag/groenland-skifte-tidszone-trods-bekymringer
says that the intent is that Nuuk will not to back to winter time in fall 2023, and that other Greenland regions are unaffected (though this may change).
I assume the official document will be published on https://naalakkersuisut.gl/kundgoerelser/2022?sc_lang=da
I found a copy of that document here: https://naalakkersuisut.gl/-/media/naalakkersuisut/filer/kundgoerelser/2022/... It says that standard time becomes -02 on March 25 (when DST would have otherwise switched clocks to -02 anyway), and that Naalakkersuisut can decide DST rules as well as time zone rules for some areas. It sounds like they're still thinking about exactly what this all means, that they don't like Nuuk's switching back and forth but haven't codified this yet, and that they don't yet know what Ittoqqortoormiit will prefer. So for now I think it's better to back out the change to Ittoqqortoormiit that I guessed three days ago. Proposed patch attached and installed into the development database.