Changing Time & Date on a Casio Watch: Illuminator, G-Shock & More

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Quick guide to adjusting your watch's time and date
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Is the date or time incorrect on your Casio watch, and you want to fix it? Luckily, altering the date or time on your watch isn't as frustrating as other things (we're all looking at you, oven clock). This guide will cover changing the time on a Casio watch; whether you have a Casio Illuminator, Casio G-Shock watch, or Casio Edifice, we've got you covered. Read on to learn more.

Changing the Time & Date on a Casio Watch

To change the time and date on a Casio digital watch, press the "Adjust" button, then the "Mode" button, and then use the buttons on the right side of the watch to change the time displayed. For an analog and digital watch, enter Timekeeping Mode, then press the upper left button to flash and change the time.

Method 1
Method 1 of 4:

Changing the Date on a Casio Digital Watch

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  1. Step 1 Enter Timekeeping Mode.
    Press the "Adjust" button on your watch to cycle through available Modes until the time starts flashing.
    • The "Adjust" button is usually on the top left corner.[1]
    • Some models, like 5691, require an additional button press here. Press and hold the button on the top left corner for at least two seconds or until the name of your current Home City appears on the display. You can find your watch's instruction number, or model number, on the back face; it's usually 3-4 digits.
    • You may be able to use your phone to adjust the date and time. Refer to your manual to see if this is an option!
  2. Step 2 Press the "Mode" button to cycle through settings.
    You will scroll through the following list in order, then return to the top of the list.
    • Home City (some models)
    • Summer time (some models)
    • Seconds
    • Hours
    • Minutes
    • Year
    • Month
    • Day
    • 12/24-hour format
    • Date display format
    • Day of the week language (some models)
    • Operation tone enable/disable (some models)
    • Illumination duration (some models)
    • Auto adjust (some models)
    • Power Saving (some models)
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  3. Step 3 Use the buttons on the right to change the setting.
    There are two buttons on the right side that you can use to change the year, month, or day.
    • If you need to change more than one setting, repeat the previous step to choose another setting.
  4. Step 4 Press the "Adjust" button again to confirm your changes.
    Doing this will save your settings and exit Timekeeping Mode.
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Method 2
Method 2 of 4:

Changing the Date on a Casio Analog-Digital Watch

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  1. Step 1 Press and hold the button in the lower left corner to enter Timekeeping Mode.
    You should only need to hold the button for a second.
  2. Step 2 Press and hold the upper left button until the seconds start to flash.
    The digits in the "seconds" area will begin to flash on the digital display when the date/time is changeable.
  3. Step 3 Change the time and date displayed.
    Use the lower right button to change seconds.
    • The lower left button will switch to the "DST" setting, which is an hour behind (think: fall back, DST; spring ahead, ST). After pressing the lower left button, then press the lower right button to enable or disable DST.
    • Press the lower left button again to change to the hour. Use the top and bottom buttons on the right to change it.
      • The upper button increases the hour.
      • The lower button decreases the hour.
      • If you have a 12-hour format selected, you'll see a "P" indicating the hours of P.M.
    • Press the lower left button again to change to the minutes. Use the top and bottom buttons to change the minutes.
      • The upper button increases the minutes.
      • The lower button decreases the minutes.
    • Press the lower left button again to change to the year. Use the top and bottom buttons on the right side to change it.
      • The upper button goes forward a year.
      • The lower button goes back a year.
        • You can set a Casio watch between 2000 and 2099. When the year, month, and day are entered, the day of the week will be calculated automatically.
    • Press the lower left button again to change to the month. Use the top and bottom buttons on the right side of the watch to change the settings.
      • The upper right button goes forward a month.
      • The lower button goes back a month.
    • Press the lower left button again to change to the day. Use the top and bottom buttons on the right side to change this.
      • The upper button goes forward a day.
      • The lower button goes back a day.
  4. Step 4 Press the upper-left button to save your changes.
    Doing this will complete the process.
    • If the analog hands aren't correct, go into Hand Setting Mode (press the lower left button after entering Timekeeper Mode to cycle through), then hold down the upper-left button until the digital time starts to blink.
    • Press the lower right button to set the hour and minute hands.
      • Each time you press, the hands will advance by 20 seconds.
      • The hands will move at the same time.
      • Make them move continuously by pressing the upper right button while holding down the lower right button. Pressing any button will make them stop moving.
    • Press the upper left button to finish and exit Hand Setting Mode.[2]
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Method 3
Method 3 of 4:

Changing the Date on a Casio Analog Watch

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  1. Step 1 Pull the crown.
    It's the small knob on the side of your watch. The crown usually has two positions:
    • First position changes the date.
    • Second position changes the time.
  2. Step 2 Set the date.
    With the crown pulled to the first position, you can rotate it clockwise or counterclockwise to change the date.
  3. Step 3 Set the time.
    With the crown pulled to the second position, you can rotate it clockwise or counterclockwise to change the time.
  4. Step 4 Push the crown back to the watch face.
    Closing this will apply your changes.
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Method 4
Method 4 of 4:

Resetting a Casio Watch to Factory Settings

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  1. Step 1 Press and hold the lower left button to enter Timekeeping Mode.
    You should only have to hold this button down for 2 seconds.
    • Resetting a watch will also erase any personalized settings, including the alarms and timers.
    • Doing this can clear your watch of technical glitches that prevent it from working, but it is also a great step before you give the watch away.
  2. Step 2 Press and hold the top left button until "SET" stops flashing.
    You should only need to hold this button down for about 2 seconds.
  3. Step 3 Press the lower left button.
    The seconds will flash.
  4. Step 4 Press the center button for at least 5 seconds.
    "RESET ALL" will stop flashing.
  5. Step 5 Press the top left button to exit.
    This will initiate the resetting process. If your watch is Bluetooth compatible, any paired phones will be deleted.[3]
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  • Many newer Casio watches have an internal calendar, so leap years and things like time changes are automatic.
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  • If you're unsure of how to change the time and date on your Casio watch, you can always refer to the manual that came with it for more specific instructions, like if your watch can sync with a phone.
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  • Have a digital watch that isn't a Casio? Follow the steps in this guide to set the time and date easily!
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References

  1. ↑ https://support.casio.com/global/en/wat/manual/5691_en/UQIDSYgaiatgwc.html
  2. ↑ https://support.casio.com/global/en/wat/adjustment/ta_2747_en/index.html
  3. ↑ https://support.casio.com/global/en/wat/manual/3464_en/VPCVSYbajxygdv.html

About This Article

Bill Green
Co-authored by:
Bill Green
Jewelry & Watch Expert
This article was co-authored by Bill Green and by wikiHow staff writer, Darlene Antonelli, MA. Bill Green is an Expert Jeweler and Appraiser. He is also the Founder & Creative Director of Jewelry & Timepiece Mechanix, and the Founder and Designer of Amaroo Handmade Opal Jewelry, based in Haddonfield, New Jersey. With over 40 years of industry knowledge, he and his team are known for restoring everything from new watches to vintage jewels and being one of the few shops that still design and make jewelry and watches. Jewelry & Timepiece Mechanix is part of the American Society of Jewelers and Gemologists and Ethical Metalsmiths. Bill studied at the Miami Jewelry Institute and the Gemological Institute of America as well as apprenticed with many accomplished craftspeople. This article has been viewed 2,012 times.
1 votes - 100%
Co-authors: 5
Updated: July 9, 2025
Views: 2,012
Categories: Watches
Thanks to all authors for creating a page that has been read 2,012 times.

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