OK, so it's been 12 hours with no further discussion, so I'll make an attempt to summarize what I think is the consensus changes before updating the PEP. 1. Python will include a timezone database both in the source distribution and the Windows installer (although I suspect that binary packages for Linux distributions may skip this, but that's OK). 2. The timezone module becomes datetime.timezone, meaning datetime.py is moved to datetime/__init__.py 3. get_timezone() will be just timezone() as no voices was raised to defend get_timezone() 4. The db parameter in timezone() will be renamed db_path 5. is_dst will default to False 6. The UnknownTimeZoneError exception will be just a ValueError 7. The two errors raised when converting timezones will both inherit from a base exception. 8. A better name for the timezone data package. "tzdata-override" was suggested, I prefer "tzdata-update" as it is clearer. //Lennart