Description

Sets the base time zone to use 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 you would use one of the following constants to define which is being used (by default this is local time):

Constant	Description
timezone_local	use the local time zone as set by the system
timezone_utc	use Coordinated Universal Time

Syntax:

date_set_timezone(timezone);

Returns:

N/A

Example:

if date_get_timezone() != timezone_utc
    {
    date_set_timezone(timezone_utc);
    }

This code checks the base time zone setting for the game and if it is not UTC it then changes it.