Instructions
Changing the date/time on your DSC Control Panel:

Press [*] [6] [Enter your master code]
Press [1]
Enter the time (in military time) and date using the following format:
HH:MMDDYY
Example: for 6:00pm on June 29, 2005
Enter [18] [00] [06] [29] [05]
Press the [#] key twice to exit programming