from datetime import datetime, timezone, timedelta
dt = datetime.strptime("01/01/2018 13:00:40", "%d/%m/%Y %H:%M:%S")
dt = dt.astimezone(timezone(timedelta(hours=0), 'Z'))
print(dt.strftime("%Y-%m-%dT%H:%M:%S%Z"))
ZnJvbSBkYXRldGltZSBpbXBvcnQgZGF0ZXRpbWUsIHRpbWV6b25lLCB0aW1lZGVsdGEKCmR0ID0gZGF0ZXRpbWUuc3RycHRpbWUoIjAxLzAxLzIwMTggMTM6MDA6NDAiLCAiJWQvJW0vJVkgJUg6JU06JVMiKQpkdCA9IGR0LmFzdGltZXpvbmUodGltZXpvbmUodGltZWRlbHRhKGhvdXJzPTApLCAnWicpKQpwcmludChkdC5zdHJmdGltZSgiJVktJW0tJWRUJUg6JU06JVMlWiIpKQo=