How To Change Casio Watch To 24 Hour. For instance Casio watches can be solar-powered shock resistant water resistant and some models give you the ability to display the time in a military or standard format. Changing it to 12 hour time takes a few seconds.

You may also switch between the 12- and 24-hour modes when using this button. For a typical modern solar-powered watch 3 minutes of direct sunlight or 35 hours of artificial light exposure will provide a 24-hour charge for the watch although this varies by model. Tap the button on the bottom left corner of your G-Shock watch until the current time appears.
SET Hold will appear and the time offset value will flash.
Press the C or stopstart button to increase a selected number or the B button to decrease it. All time and date functions are set this way. Solar-powered Casio watches can be either digital watches or analogue timepieces. You can switch your watch to display the time in 24 hour mode instead of military mode by adjusting its settings.
