Django and Timezones Quick Reference Guide

gistfile1.md

Django Timezone Quick Reference

Timezones hurtz my brains

import datetime
import pytz

from django.utils import timezone

# Let's be in Perth time
perth = pytz.timezone('Australia/Perth')

# Change from a naive timezone to timezone-aware

utcnaive = datetime.datetime.utcnow()
# datetime.datetime(2014, 7, 24, 7, 13, 15, 754516)
utcaware = utcnaive.replace(tzinfo=pytz.utc)
# datetime.datetime(2014, 7, 24, 7, 13, 15, 754516, tzinfo=<UTC>)
# OR
utcaware = pytz.utc.localize(utcnaive)
# datetime.datetime(2014, 7, 24, 7, 13, 15, 754516, tzinfo=<UTC>)

# Change UTC <----> Local
perthaware = timezone.localtime(utcaware, perth)
# datetime.datetime(2014, 7, 24, 15, 13, 15, 754516, tzinfo=<DstTzInfo 'Australia/Perth' WST+8:00:00 STD>)

# Change Local <----> UTC
utcaware = timezone.localtime(perthaware, pytz.utc)
# datetime.datetime(2014, 7, 24, 7, 13, 15, 754516, tzinfo=<UTC>)

## Change to naive (non timezone-aware)
perthnaive = timezone.make_naive(perthaware, perth)
# datetime.datetime(2014, 7, 24, 15, 13, 15, 754516)

perthnaive = timezone.make_naive(utcaware, perth)
# datetime.datetime(2014, 7, 24, 15, 13, 15, 754516)

perthnaive = perthaware.replace(tzinfo=None)
# datetime.datetime(2014, 7, 24, 15, 13, 15, 754516)

utcnaive = timezone.make_naive(perthaware, pytz.utc)
# datetime.datetime(2014, 7, 24, 7, 13, 15, 754516)

References

Django 1.7 docs for timezone