Create method through flag that validates different time zones

[dmtzs]

Objective

I need to create through attributes of each calss inside library something that can validate exp and all that part of functionality not only with utc but also with different time zones, so it can be modified to validate in different time zones, something like the URL of the line code to be changed, click here

Also the specific line of code to check is: now = timegm(datetime.now(tz=timezone.utc).utctimetuple())