Hi Pandas devs, If you are not already aware, I proposed PEP 615 <https://www.python.org/dev/peps/pep-0615/>, which adds IANA time zone support to the standard library, almost two months ago. I know that pandas makes very heavy use of time zones, so I probably should have explicitly requested comments earlier in this process, but I suppose it's better late than never. The discussion is mostly centralized to the Python discourse <https://discuss.python.org/t/pep-615-support-for-the-iana-time-zone-database...>. You are welcome to comment on any aspect of the PEP, though one of the few remaining "open questions" is the question of equality and hash semantics <https://discuss.python.org/t/pep-615-support-for-the-iana-time-zone-database...>, which I figured may be relevant for this crowd, since I know you have to do some funky footwork to in some ways normalize time zones and adapt the time zone information to your own time model. Thanks! Paul