Sanyo FXD 780GD uses a 24-hour display system only. Without having a manual, it's difficult to set the time.
1. Pres the DISP button for more than 2 seconds.
2. Press the following buttons to set the clock.
VOL dial: Adjust the hour and minutes.
^: To achivate Hour blink
\/: To activate Minute blink
BAND button: Adjust the minutes to zero.
(Example) 12:29 -> 12:00
12:30 -> 13:00
3. Press the DISP button to activate the clock.
Gurdian Angel, November 2012