Changing the date & time on a GPT PKS2
  1. Lift handset
  2. Press Save and Clock
  3. Dial the Year i.e. 2003 followed by the *
  4. Dial the Month and Day i.e. 0401 then *
  5. Dial the day i.e. 1 for Monday then *
  6. Dial the time HH MM (in 24 hour clock) i.e. 0715
  7. Dial * then replace the handset