Set the time and date
- In the Timekeeping Mode, hold A until the seconds flash.
- Press C to step through the settings: seconds, hour, minutes, 12/24-hour format, year, month, day.
- On the seconds, press D to reset them to 00.
- On the other settings, press D to go up and B to go down (hold for fast); on the 12/24-hour format, D or B switches it.
- Press A to return to the Timekeeping Mode.
Good to know
Resetting the seconds between 30 and 59 adds one minute.
In 12-hour format, P marks p.m. times.
From Casio's guide, page E-6