Audio Systems: Clock Operation on GM delco radio, cutlass supreme brougham, oldsmobile cutlass supreme

Question
I have a 1986 Oldsmobile Cutlass Supreme Brougham with a factory installed GM delco radio/caset player with clock.  Because we are missing the auxillary audio manual, we do not know how to set the clock.  We would be very grateful if you could help.

Answer
hi
wow this car is 20 years old i don't remember
if there is a SET BUTTON HOLD IT WITH ONE HAND AND WITH THE OTHER PRESS THE FIRST PRESSET FOR HOURS AND THE SECOND PRESSET FOR MINUTES
if no SET button use the volume button press down and hold it  
please let me know if any work
thank you
sorry i can not help you more