Timezones

Paul Ganssle is a python-dateutil maintainer and PEP 615’s author, and here he shares stories of all the complicating factors involved with timezone management.

• Multiple timezone systems and governing bodies
• Vary across location, transitions/year, country, time, and even ethnic group
• Variable amount of timezone releases per year (not synced with Python releases)

This talk explains decisions made within Python’s zoneinfo library.