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How to Change a G-shock to Military Time in a Second

Written by Everett Bledsoe / Fact checked by Brain Bartell

how to change a g shock to military time

Learning to set the 24-hour time on Casio G-Shock is as easy as pressing a few buttons. With most G-Shock models, you can simply adjust to military timekeeping because they allow you to flip between 12-hour and 24-hour formats.

Read on as we will show comprehensive, easy-to-follow instructions and helpful tips on how to change a G-shock to military time.

Whether you’re in the military, frequently travel internationally, or just like watches with military time, we’ve got you covered.

Detailed Steps to Switch G-shock to Military Time

Famous for their toughness, accuracy, and versatility, G-Shock watches are worn by explorers, athletes, and military people. With your own G-shock time set to military mode, there is no need to remember whether it is morning or afternoon because the 24-hour clock provides an unambiguous manner of telling time.

Here are the Casio G-Shock’s full step-by-step instructions. You may also easily change a digital watch from 24-hour to 12-hour time by following these same steps.

Step 1: Notice the four buttons on the watch, which are Adjust and Mode on the left, also Reset and Start on the right.


Step 2: First, you must push and hold down the button in the upper left corner (Adjust) until the display reveals a flashing image of your current city.


Step 3: After that, make two presses on the bottom left button (Mode) until the “12H” begins flashing on display.


Step 4: Next, change the time to 24 hours by pressing the button in the bottom right corner (Start) of your G-shock.


Step 5: Finally, to save the configuration you’ve chosen, press the button in the upper left corner (Reset). Doing this will toggle the display from showing the day and date to the current time, allowing you to verify the newly set 24-hour time.


Step 6: Your watch will now show the time in 24 hours. It’s done!

G-Shock Models With Military Time Features and How to Use Them

Casio’s G-Shock line of timepieces is known for its toughness and resilience. Displaying the clock in the 24-hour format utilized by the military and various other professions is a frequent feature on many G-Shock models. Some examples of G-Shock watches with a military time function are the following:

1. GA-100


The GA-100 line of G-Shock watches is well-known for its oversized, eye-catching appearance and its ability to display time in several time zones.

Press the “mode” button until the time display begins flashing, indicating that you have activated the military time function.

To switch between the various time zones, click the “B” button. To use military time, pick the “24H” option.

2. DW-5600


The DW-5600 series of G-Shock watches have a timeless square case and are well-known for their reliability and toughness.

This model can be set to military time by pressing the “A” button until the time display begins flashing. Then click the “B” button to switch between 12- and 24-hour time displays.

To use military time on G-shock DW 5600, pick the “24H” option.

3. DW-6900


Meanwhile, the G-shock DW-6900 is an easy-to-use model with all the standard features you’d expect from G-Shocks.

It has a calendar, time, alarm, countdown timer, and stopwatch functions that are all easy to navigate and understand. If you want to change the time on G-shock DW6900, you can easily use the abovementioned steps.

4. GD-100


The G-Shock GD-100 series features a durable and practical digital design. To switch to military time on this model, simply follow our detailed instructions on changing a g-shock to military time.

Note that the precise steps to switch G-shock to military time differ slightly based on your G-Shock watch type and firmware version. For model-specific guidance, it’s best to consult the user manual that came with your watch.

Tips When You Switch G-shock to Military Time


If you have a G-shock watch, you may wonder, “What’s the easiest way to set the time on my G-shock?” There is no easy way because there is a process, but there are some valuable tips:

Refer to the instruction manual.


Your G-Shock’s user manual will provide the most accurate and complete instructions to adjust the time to military mode. Always consult the instructions to make sure you’re doing things properly.

  • Learn How Each Button Works.

A “mode” button, which gives you access to many options, and a “adjust” button, which lets you fine-tune those settings, are often used.

  • Be sure to save your changes or adjustments

Once the 24-hour format has been selected, the time setting mode can be left and the changes saved. The “mode” button, or a separate button specifically for saving and quitting, is usually used for this purpose.

Troubleshooting when you change to G-shock 24-hour mode


Here are some general troubleshooting hacks if you have problems when you set the G-shock watch to military time.

Note that the provided troubleshooting steps are broad suggestions based on standard procedures for fixing digital watch malfunctions.

  • Read the instructions

Read the user guide that comes with your G-Shock watch for further information. You can expect detailed, model-specific instructions in the manual.

  • Make sure you’re in the right setting

Depending on the model, some G-Shock watches can perform a variety of functions. To change the time format, you must be in the correct mode. To determine the proper setting, consult the instructions.

  • Use the appropriate controls

The buttons used to toggle between time formats on different G-Shock models vary. Check that you are pushing the appropriate button(s) per the manual’s instructions.

  • Reset your G-shock

Resetting your G-Shock or any digital watch to factory defaults is an option if you’re still having issues. Once more, it’s best to refer to the user manual for specifics on how to do a reset on your model.


Learning how to change a G-shock to military time is easy but can vary significantly from model to model. Thankfully, the manual that comes with each G-shock unit makes it easy to use the watch and explore its functions.

As long as you carefully follow each step, you will not have issues converting your G-shock. from regular time to military time. Once you have saved the settings, your G-shock may now provide you with military timekeeping that’s convenient and accurate.

Read more: Guide to change your phone and your Apple watch to military time

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