1. Enter your 4 digit MASTER code
2. Press [#] then  then 
3. Press [*] when the time/date is displayed. A cursor will appear in the first digit of the hour
To move ahead, press [*], backwards [#]
4. Enter the 2 Digit hours setting, 2 digit minute setting. Press  for PM or  for AM. Enter the last two digits of the current year. Enter the 2 digit month, Enter the 2 digit day.
5. To exit, press [*] when the cursor is at the last digit or, or wait 30 seconds.