>>> from datetime import timedelta, datetime
>>> some_date = datetime.strptime('Jun 03 01:15 PM', '%b %d %I:%M %p')
>>> some_date
datetime.datetime(1900, 6, 3, 1, 15)
new_date = (some_date + timedelta(hours=7)).strftime('%e %b %H:%M')
>>> new_date
' 3 Jun 20:15'