pytzsub 2026.7

World timezone definitions by country subdivision (e.g., provinces or states)

pytzsub

World timezone definitions by country subdivision (e.g., provinces or states).

Given an ISO 3166 country or subdivision code, pytzsub returns the matching IANA time zone name.

Accuracy of the database

The database is not authoritative, and it surely has errors. Corrections are welcome and encouraged.

Installation

As per usual:

pip install pytzsub

pytzsub has no runtime dependencies and supports Python 3.9+.

Examples

>>> from pytzsub import sub_timezone
>>> sub_timezone('US-CA')
'America/Los_Angeles'

>>> from pytzsub import all_code
>>> 'US-CA' in all_code()
True

Combine it with the standard-library zoneinfo module (Python 3.9+) to build a real timezone object:

>>> from zoneinfo import ZoneInfo
>>> from pytzsub import sub_timezone
>>> tz = ZoneInfo(sub_timezone('CA-QC'))
>>> tz.key
'America/Toronto'

It also works with pytz if you prefer it:

>>> from pytz import timezone
>>> from pytzsub import sub_timezone
>>> timezone(sub_timezone('CA-QC'))
<DstTzInfo 'America/Toronto' LMT-1 day, 18:28:00 STD>

Links

• Time Zone Database - https://www.iana.org/time-zones
• ISO 3166-2 - https://en.wikipedia.org/wiki/ISO_3166-2