Gets the base time zone being used for all the rest of the date and time functions. This time zone can either be local (as set by the system) or UTC, and the function will return one of the following constants:
Constant Description timezone_local use the local time zone as set by the system timezone_utc use Coordinated Universal Time
if date_get_timezone() != timezone_utc
This code checks the base time zone setting for the game and if it is not UTC it then changes it.