Hi Benny, Do you have the touch-control screen fitted ? if not: On your Radio. Press and hold the MODE button until TA VOLUME is displayed. Repeatedly press and release the MODE button until CLOCK SET is displayed. While the hour format is flashing, use the seek up/seek down keys to select either 12 or 24 hour format. Press and release the MODE button. If the 12 hour format has been selected, use the # key to select AM or PM as appropriate. Using the keypad, enter the correct time. It should be noted that clock time must be entered as four digits e.g. 0325 or 1525, when in 12 or 24 hour format. To exit clock setting procedure, press and hold the MODE key until the display reverts to audio mode. Hope this helps a little :D Regards, Keith