To set the time and date on your digital watch, continually push the "Mode" button to bring up the "Time and Date" display. Press the button repeatedly until the "Time" numbers begin to flash, keeping in mind that certain models require you to hold the button down to activate this function. To set the time on a Casio Illuminator watch, press the D button and pick the home time. Then, click the C button to choose between various settings, such as hours and minutes. Finally, modify the time using the B and D buttons. After you've confirmed the settings, hit the A button to leave and set the time.