Basic datetime manipulation in Python.

date_manipulation.py

# -*- coding: utf-8 -*-

import datetime
from pytz import timezone
from pytz import utc

fmt = '%d/%m/%Y %H:%M:%S %Z'

date_utc_now = datetime.datetime.utcnow()

print date_utc_now.strftime(fmt)

date_string = '02/10/2015 10:05:10 BRT'

date_datetime = datetime.datetime.strptime(date_string, fmt)

america = timezone('America/Recife')

loc_datetime = america.localize(date_datetime)

print loc_datetime.strftime(fmt)

loc_utc_datetime = loc_datetime.astimezone(utc)

print loc_utc_datetime.strftime(fmt)