[SOLVED] How to change timezone of datetime object using timezone abbreviation

How to change timezone of datetime object using timezone abbreviation

I bet this is easy, but darned if I can figure it out. Standard disclaimer that honestly, I've tried to figure this out.

How do you change the time zone of a datetime.datetime object by using the abbreviation of the time zone? For example, if I have an object that has a timezone of EST, how do I get that same datetime for PST?

How would you do something like this:

from datetime import datetime
now = datetime.now().astimezone()
pst = your_magic_function(now, 'PST)

Solution

Specify the time zone in .astimezone() using the ZoneInfo class. The default is your local time zone. The available ZoneInfo keys are listed in zoneinfo.available_timezones(). "PST" is not one of them since the Pacific zone varies between PST and PDT depending on the date.

# "pip install tzdata" for latest time zone data on Windows.
import datetime as dt
import zoneinfo as zi

# Being specific to get Eastern since I'm in PST now.
now = dt.datetime.now().astimezone(zi.ZoneInfo('US/Eastern'))
print(now)
print(now.astimezone(zi.ZoneInfo('US/Pacific')))

Output:

2024-11-04 20:38:51.401658-05:00
2024-11-04 17:38:51.401658-08:00