The fastest way depends on what kind of clock you have

Most clocks fall into one of three types: analog (with hands), digital (with numbers on a display), and smart clocks (connected to WiFi or Bluetooth). Analog clocks usually have a small knob on the back that you turn to move the hands. Digital clocks have buttons you press in a sequence to enter the new time. Smart clocks often sync automatically but let you override the time through an app or settings menu. The method takes anywhere from 10 seconds to a few minutes depending on your clock's design.

Before you start, know what time you're setting it to. If you're changing for daylight saving time, check whether your region observes it—not all places do. If you're correcting a clock that's running slow or fast, set it to match your phone or another reliable timepiece.

Key Takeaways

  • Analog clocks have a knob on the back; turn it clockwise to move the hands forward and counterclockwise to move them backward.
  • Digital clocks require you to press a button labeled "Mode," "Set," or "Time" to enter adjustment mode, then use arrow buttons to change the hours and minutes.
  • Smart clocks connected to WiFi usually update automatically, but you can change the time manually through the device's app or settings menu.
  • Microwave and oven clocks use dedicated time buttons; check your manual if the buttons aren't labeled, since each brand works differently.
  • Car clocks vary widely—some have a dial, others have buttons on the steering wheel or dashboard, so consult your owner's manual if you're unsure.

Changing an analog clock with a knob

Locate the knob on the back of the clock. It's usually a small dial or stem sticking out from the center of the clock face. Gently turn it clockwise (to the right) to move the hour and minute hands forward. Turn it counterclockwise (to the left) to move them backward. Move slowly so you can stop at the exact time you want.

Some analog clocks have two knobs—one for the hour hand and one for the minute hand. If yours has two, the larger knob usually controls the minutes and the smaller one controls the hours. Adjust the minute hand first to the correct minute, then adjust the hour hand to the correct hour. If the clock has a second hand, it will move on its own once you release the knob.

Changing a digital clock with buttons

Look for a button labeled "Mode," "Set," "Time," or "Adjust." Press and hold it for two to three seconds until the display starts flashing or changes color—this means you've entered adjustment mode. The hour digits usually flash first. Use the arrow buttons (or "+" and "−" buttons) to increase or decrease the hour. When the hour is correct, press "Mode" or "Set" again to move to the minutes.

Adjust the minutes the same way using the arrow buttons. Once both the hour and minutes are correct, press "Mode" or "Set" one more time to save and exit adjustment mode. The display will stop flashing and return to normal. If you make a mistake, press "Mode" to back up and try again. Most digital clocks lock you out of adjustment mode after 30 seconds of inactivity, so work quickly.

Changing a smart clock or connected device

Smart clocks that connect to WiFi or Bluetooth usually set themselves automatically using the internet. If your clock is already connected to your home network, it should show the correct time without any action from you. However, if you need to change it manually, open the companion app on your phone or tablet. Look for a "Settings" or "Device Settings" option, then find "Time" or "Date and Time."

From there, you can toggle off any automatic time setting and enter the time manually. Some smart clocks also have a physical button on the device itself—check the manual to see if yours does. Once you've changed the time in the app, the clock should update within a few seconds. If it doesn't, try restarting the clock by unplugging it for 10 seconds and plugging it back in.

Changing the time on microwave and oven clocks

Microwave and oven clocks use dedicated buttons because they're built into the appliance. Look for a button labeled "Clock," "Time," or "Set Time." Press it once, and the display will usually show the current time with one part (hours or minutes) flashing. Use the number pad to enter the correct time, or use arrow buttons if your model has them instead of a number pad.

On most microwaves, you enter the time in 24-hour format (so 2 p.m. is 14:00) or 12-hour format depending on your model. Check your manual if you're unsure which one yours uses. Once you've entered the time, press "Start" or "Set" to confirm. If you enter the wrong time, press "Clock" or "Clear" to cancel and start over. Some older models require you to press the button multiple times to cycle through hours and minutes instead of typing them in.

Changing the time on a car clock

Car clocks vary by make and model, so the method depends on your vehicle. Some cars have a dial on the dashboard that you turn like an analog clock. Others have buttons on the steering wheel or dashboard labeled "Time," "Set," or with arrow symbols. A few newer models let you change the time through the infotainment screen using a touchscreen menu.

If your car has buttons on the steering wheel, look for ones marked with + and − or arrows. Press and hold the time-related button until the display shows adjustment mode, then use the other buttons to change the hours and minutes. Consult your owner's manual if you can't find the time controls—it will show you exactly which buttons to use and in what order. Most car clocks update automatically if your vehicle is connected to a cellular network, so you may not need to change it manually.

Common mistakes to avoid

The biggest mistake is turning an analog clock's knob too fast and overshooting the time you want. Turn slowly and stop as soon as the hands reach the correct position. Another common error is forgetting to switch between 12-hour and 24-hour time on digital clocks and microwaves—if your clock suddenly shows 14:30 instead of 2:30 p.m., you've accidentally switched formats.

Don't assume a smart clock needs manual adjustment. If it's connected to WiFi, it almost certainly set itself correctly. Trying to change it manually can cause confusion if the automatic setting kicks back in. Finally, if a clock has a battery backup, changing the time while the battery is low can cause it to reset to a default time the next time power is lost. If your clock keeps reverting to the wrong time, the battery may need replacement.

Frequently Asked Questions

Why does my clock keep resetting to the wrong time?

A clock that resets usually has a dead or dying battery. Batteries power the clock's memory during power outages. Replace the battery with a fresh one of the same size and type. If the clock still resets after a new battery, the circuit board may be failing and the clock may need replacement.

Can I change my clock backward, or should I only move it forward?

You can move an analog clock backward without damage. However, some people prefer moving it forward past midnight instead because it's gentler on the internal mechanism. For digital clocks, backward and forward are equally safe—use whichever direction gets you to the correct time faster.

What's the difference between 12-hour and 24-hour time?

In 12-hour time, the day runs from 12:00 a.m. to 11:59 a.m., then 12:00 p.m. to 11:59 p.m. In 24-hour time, it runs from 00:00 to 23:59, so 2 p.m. becomes 14:00. Most home clocks use 12-hour time, but some digital clocks and all military or medical settings use 24-hour time.

Do I need to change my clock for daylight saving time?

Only if you live in a place that observes daylight saving time. Most of the United States does, but Hawaii, Arizona, and some U.S. territories do not. Check your local rules. Smart clocks connected to the internet usually update automatically, but analog and basic digital clocks need manual adjustment.

My clock has no visible buttons or knobs. How do I change it?

Some clocks hide their controls. Check the back, sides, and bottom of the clock for a small button or dial. If you still can't find anything, it may be a smart clock that only adjusts through an app, or it may have a recessed button you need a pen or paperclip to press. Your manual will show you where the controls are.