Fun with Python datetime timezones.

example.py

#!/usr/bin/env python

from datetime import datetime
import timezone


def main():
	my_time = datetime(
		year = 2016,
		month = 1,
		day = 1,
		hour = 6,
		tzinfo = timezone.UTC()
	)

	print('{0} - {1}'.format(my_time,my_time.tzname()))

	to_melbourne_time = my_time.astimezone(timezone.Melbourne())
	print('{0} - {1}'.format(to_melbourne_time,to_melbourne_time.tzname()))


if (__name__ == '__main__'):
	main()

output.txt

2016-01-01 06:00:00+00:00 - UTC
2016-01-01 16:00:00+10:00 - Melbourne

timezone.py

import datetime


class BaseTimezone(datetime.tzinfo):
	TIMEDELTA_ZERO = datetime.timedelta(0)


	def __init__(self,timezone_name,offset_seconds):
		datetime.tzinfo.__init__(self)

		self.timezone_name = timezone_name
		self.offset = datetime.timedelta(seconds = offset_seconds)

	def utcoffset(self,dt):
		return self.offset

	def dst(self,dt):
		return BaseTimezone.TIMEDELTA_ZERO

	def tzname(self,dt):
		return self.timezone_name

# define timezones
class UTC(BaseTimezone):
	def __init__(self):
		BaseTimezone.__init__(self,'UTC',0)

class Melbourne(BaseTimezone):
	def __init__(self):
		BaseTimezone.__init__(self,'Melbourne',10 * 3600)