Download SETTZ.ZIP, and unzip SETTZ.EXE to a folder in your PATH.
SETTZ.EXE - TimeZone configuration Utility : By Steven Wettberg Syntax: SETTZ \[TIMEZONE #\] \[UNC\] SETTZ sets the timezone of the computer. The time is automatically adjusted according to the timezone bias for the selected timezone (see below). You may optionally specify a UNC of a Windows NT machine, if this parameter is specified the local date & time are set using this machine as the source. The UNC specified does not need to reside in the same timezone as the local machine. Note: The computer is reset for automatic adjustment to Daylight Savings time. 0 = Display current settings 4 = Mountain Time 1 = Eastern Time 5 = Mountain Time (Arizona) 2 = Eastern Time (Indiana) 6 = Pacific Time 3 = Central Time Example: SetTz 3 \\SomeServer The example sets the local machine's timezone to Central Time and then sets the time & date using \\SomeServer as the source.