Set the time and date
- In the Timekeeping Mode, hold A for at least two seconds to open the setting screen.
- Move the pointer to TIME ADJUSTMENT with A and D, press C, then select MANUAL and press C; the hour is selected.
- Change the hour with A and D, then press C to move to the minute.
- Set the minute, year, month and day the same way, pressing C after each.
- Select YES with A and D and press C to save.
- Press E twice to leave the setting screen.
Good to know
Use this only when GPS reception or the phone connection is not possible; the watch normally sets itself.
12/24-hour format is under TIME ADJUSTMENT too, as 12/24H.
From Casio's guide, page 14