Unless you have an older release, where you can't adjust the DST start and stop dates; then the procedure is:
* Menu
* System Program
* Start (or Exit)
* System
* Time
* System Time (If this is one of the choices)
* The current time is displayed
* Use Backspace to delete the current time
* Dial the correct time, using 2 digits for the Hour and 2 digits
for the Minute, 24-Hour Military format
* Enter
* Exit (or Home)