Greetings! Last year at the Language Summit, I proposed to add additional concrete time zones to the standard library <https://pyfound.blogspot.com/2019/05/paul-ganssle-time-zones-in-standard.htm...> . After much work and much more procrastination, I now have now put together my first proposal: support for the IANA time zone database <https://www.iana.org/time-zones> (also called tz, zoneinfo or the Olson database; Wikipedia <https://en.wikipedia.org/wiki/Tz_database> ). Last week, I submitted it for consideration as PEP 615 <https://www.python.org/dev/peps/pep-0615/>. I originally posted it on the discourse last week, and advertised the discussion on some interest-group-specific fora (tz mailing list, datetime-SIG mailing list), but I think it is ready to be advertised to a wider forum, so I am posting it here for your consideration. Please direct comments to the discourse thread, so that the discussion can be as centralized as possible: https://discuss.python.org/t/3468 <https://discuss.python.org/t/pep-615-support-for-the-iana-time-zone-database...>. Links for easy access: PEP 615: https://www.python.org/dev/peps/pep-0615/ Reference implementation: https://github.com/pganssle/zoneinfo tzdata repo: https://github.com/pganssle/tzdata Thanks! Paul