If it’s several python modules, then yes, choose a license and then contact pypi and see if you can distribute your modules through them.
One very important thing is that you have to make sure everything is ready for distribution: check your project will work (possibly starting with a blank VM), what its dependencies are, that the requirements.txt file is good and operational, that automated tests are available for people to run after installing, etc.
In other words, the ideal project is not just a question of license but also all the scaffoldings you supply with it.
Thanks for opening your code!
There is a guy named Arthur David Olson who maintains a small database of all the time zones in the world, including things like leap seconds and such. It’s used by everybody and it is updated several times a year. See here:
https://en.m.wikipedia.org/wiki/Tz_database