Setting military time - Casio G-Shock G-Rescue Tide Graph Watch

https://www.google.com suggests several web sites with suggestions.

http://tv.manualsonline.com/support/armitron/watch/i-cannot-get-my-watch-off-military-time-5752670

Quoting: "David posted an answer 3 years ago
Press the MODE button (B) three times to enter the time setting mode. Press the RESET button (A) to tab through seconds, minutes, hour. The ST/STP button (C) scrolls through the number choices. When selecting the hour, if you want 12hr time format make sure the AM or PM is displayed next to the number you deszire. There are 48 possible selections for the hour - 12 for AM, 12 for PM, and 24 for military time. Keep cycling through until the correct hour comes around. Once you have the correct choice, press the MODE button once more to exit time setting mode."

Try this and report back whether it works for you or not:

Press the MODE button (B) three times to enter the time setting mode. Press the RESET button (A) to tab through seconds, minutes, hour. The ST/STP button (C) scrolls through the number choices. When selecting the hour, if you want 12hr time format make sure the AM or PM is displayed next to the number you desir. There are 48 possible selections for the hour - 12 for AM, 12 for PM, and 24 for military time. Keep cycling through until the correct hour comes around. Once you have the correct choice, press the MODE button once more to exit time setting mode.


http://fitness.manualsonline.com/support/armitron/watch/i-cannot-get-my-watch-off-military-time-5752670

use the mode setting to change from 24 hr to 12hr

could not turn off military time, you can change time mode by setting the time format.

go into the time setting mode and you will have an opportunity to select "12" or "24". 24 is military and 12 is civilian time.

Actually all the hours are military time. They are the same for the first twelve hours of the day. If you go through the setting procedure it will ask you if you want "12" or "24" hour time. Select 12. "24" is military

military time:
1. When setting the time on your watch, IF you watch can change to Military time(and most can)
2. when you are adjusting the hours go through a full 24 hour cycle. You'll notice that the 2nd time through it is on military time.. 3rd time through back to 12 hour day AM/PM cycle .. 4th time back to Military.
So you can do this as many times as it takes to get to the right time ..
In 24 hour time you will see an "H" displayed where you normally see and "A" for AM and "P" for pm.

Hold "Set"
use "mode" to browse
when you get to time setting the 24h/12h setting should be first thing you can do. press "St/Sp" button when you see the "24h" icon flash it should switch to "12h"
Press "Set" You are done!

Possibly you can change it back by pushing the hour-setting button through a 24 hour cycle--you can see if you are on military time during the PM part of setting it. If it's on military, just keep pushing till you start over at 12 am again (hint: that's 0:00 in military.) At least, that's how it is on my watch.

I have a G Shock DW-004 made in 1997. I had this same problem, and I tried everything to change TO military time and back to standard time. I just read the bit to try and was about to do it. I pressed the top left button to get the time to flash, and hit the light button by accident (the one with the big G on it) and VIOLA! It changed to military time. So in my model, anyway, the G light button (under the display on the edge of the watch body) changed the time to military from standard and back again, when the time is flashing.

Good luck!