Daylight Saving Time Dates for the Next Two Years

In the United States, clocks spring forward on the second Sunday in March and fall back on the first Sunday in November. In 2024, clocks move forward on March 10 and back on November 3. In 2025, clocks move forward on March 9 and back on November 2.

When clocks spring forward in March, you lose an hour of sleep that night — set your clocks forward one hour before bed. When clocks fall back in November, you gain an hour — set your clocks back one hour before bed. Most phones and computers update automatically, but you will need to change clocks in your car, kitchen, and any devices without internet connection.

Not all of the United States observes daylight saving time. Hawaii and most of Arizona do not change their clocks. Parts of Indiana, Michigan, and a few other states have their own rules. If you live in one of these places, your clocks stay the same year-round.

Key Takeaways

  • Clocks spring forward one hour on the second Sunday in March (March 10 in 2024, March 9 in 2025).
  • Clocks fall back one hour on the first Sunday in November (November 3 in 2024, November 2 in 2025).
  • Smartphones and computers usually update automatically, but you must manually change clocks in vehicles, appliances, and battery-powered devices.
  • Hawaii, most of Arizona, and parts of a few other states do not observe daylight saving time and keep the same time all year.

Why Clocks Change and What It Means for Your Day

Daylight saving time shifts an hour of daylight from morning to evening. In March, the sun rises and sets about an hour later than it did the day before. In November, the sun rises and sets about an hour earlier. The idea was to save energy, though studies show the actual savings are small.

The time change affects your sleep, your schedule, and your body's rhythm. Most people find the spring change harder because they lose sleep. The fall change is usually easier because you gain an hour. If you have a regular work or school schedule, the change may affect when you wake up and when it gets dark.

Devices That Change Automatically and Those That Don't

Your smartphone, computer, and tablet will update the time automatically if they are connected to the internet and have location services turned on. Smartwatches connected to your phone will also update. Televisions with internet connection usually update on their own.

You must change the time manually on car clocks, microwave clocks, oven clocks, alarm clocks, wall clocks, and any device that runs on batteries. Fitness trackers without internet connection need manual adjustment. If you have a smart home system like Alexa or Google Home, check whether it updated — most do, but some require you to confirm the change in the app.

Older devices and those without any connection to the internet will never update on their own. If you have a clock radio, a bedside alarm, or a wall clock in your office, plan to change those clocks the night before or the morning of the change.

How to Prepare the Night Before the Change

The easiest approach is to change your clocks before you go to bed on the night of the change. In March, set clocks forward one hour. In November, set clocks back one hour. Start with the clocks you use most often — your bedroom alarm, your car, and your kitchen clock.

Make a list of every clock in your home and car so you do not forget any. Check your oven, microwave, coffee maker, and any other appliance with a display. If you have a garage door opener with a clock, that needs changing too. Many people miss their car radio clock or the clock on their cable box.

If you have children, set their bedroom clocks and any clocks they use for school. If you take medication on a schedule, make sure you understand whether the time change affects when you take your next dose — talk to your doctor or pharmacist if you are unsure.

States and Regions That Do Not Change Their Clocks

Hawaii does not observe daylight saving time and stays on Hawaii-Aleutian Standard Time year-round. Most of Arizona does not change clocks either, except the Navajo Nation, which does observe daylight saving time. The U.S. Virgin Islands and Guam also do not change their clocks.

In the mainland United States, parts of Indiana and Michigan have their own rules. Some counties in these states observe daylight saving time, while others do not. If you live near a state border or in a region with mixed rules, check your local government website to confirm whether your area changes clocks.

If you travel across state lines or work in a state that does not observe daylight saving time, you may need to adjust your schedule. Video calls and meetings with people in different time zones become more complicated during the weeks when some places have changed and others have not.

What to Do If You Miss the Change

If you forget to change your clocks, you will be an hour off until you fix them. Your phone and computer will show the correct time, but your car clock, kitchen clock, and other manual devices will be wrong. This usually becomes obvious within a few hours when you notice the sun is in a different place than expected or your schedule feels off.

Change any missed clocks as soon as you notice. If you are unsure whether a clock has been updated, check it against your phone. If you have a meeting or appointment scheduled right after the time change, double-check the time on all your devices before you leave.

Frequently Asked Questions

Do I need to change my phone clock manually?

No. Your smartphone updates automatically if it is connected to the internet and has location services on. Check your phone's settings to make sure automatic time update is enabled. If you have an older phone or one without internet, you may need to change it by hand.

What time should I change my clocks?

Change your clocks right before bed on the night of the change. In March, set them forward one hour. In November, set them back one hour. This way you wake up to the correct time. If you prefer, you can change them in the morning, but doing it at night is less likely to cause confusion.

Does my car clock change automatically?

Most car clocks do not change automatically unless your vehicle is a newer model with a connected infotainment system. Check your car's manual or the settings menu to see if automatic time update is available. If not, you will need to change it by hand using your car's clock controls.

What happens if I take medication on a schedule during the time change?

Talk to your doctor or pharmacist before the time change. For most medications, you take your next dose at the new clock time, not the old one. If you take medication every 12 hours or every 8 hours, the time change may shift when you take your doses. Your pharmacist can tell you exactly what to do.

Will my smart home devices update on their own?

Most smart speakers like Alexa and Google Home update automatically if they are connected to the internet. Smart thermostats usually update too. Check the app for each device to confirm the time is correct after the change. Some devices let you turn automatic updates on or off in their settings.