Daylight saving time ends in most of the United States this Sunday, November 1, 2026. At 2 a.m. local daylight time, clocks move back to 1 a.m. standard time. Your iPhone should make that change without help, but a two-minute settings check now can prevent a wrong clock, a confusing calendar, or a missed morning alarm.

The official 2026 schedule from the National Institute of Standards and Technology confirms that daylight saving time runs through November 1 at 2 a.m. The switch does not apply everywhere: Hawaii and most of Arizona do not observe daylight saving time, and U.S. territories follow their own rules. The safest approach is to let iOS use your location and network information instead of manually changing the clock.

Turn on automatic date and time

Open Settings > General > Date & Time, then make sure Set Automatically is enabled. Apple says this lets the device set its date and time from the current time zone. Your iPhone also needs an internet connection to receive current time information.

Next, open Settings > Privacy & Security > Location Services > System Services and confirm that Setting Time Zone is on. That permission allows the phone to determine the correct time zone from its location, which matters if you travel across a time-zone boundary this weekend. Apple documents both checks in its official date-and-time troubleshooting guide.

If Set Automatically is dimmed, Apple notes that a Screen Time passcode, a carrier restriction, or a configuration profile from work or school may control the setting. Do not disable a managed profile just to change the clock. If the displayed time remains wrong, contact the administrator or carrier responsible for the restriction.

Install the latest iOS update before Sunday

Apple recommends updating software when troubleshooting time-zone information. Go to Settings > General > Software Update and install the newest version offered for your device. Back up first, connect to power and Wi-Fi, and allow enough time for the phone to restart. Apple’s iPhone and iPad update guide explains the full process.

If Settings reports that updated time-zone information is available, restart the iPhone and any paired Apple Watch. A restart gives the devices a clean opportunity to load the new information before the overnight change.

Review alarms and your Sleep schedule

A normal recurring alarm is tied to the local clock, so you usually do not need to move a 7 a.m. alarm to 6 a.m. when clocks fall back. Still, open the Clock app, tap Alarms, and verify that the alarm is enabled, uses the intended repeat days, and has the correct sound and volume. This is especially worthwhile if you work overnight or need an alarm during the repeated 1 a.m. hour.

If you use a Sleep schedule, open the Health app, tap Sleep, and review the next schedule. Apple’s iPhone guide to editing Sleep schedules shows how to change the next wake-up only or the recurring schedule. Avoid creating a second alarm “just in case” unless you give it a distinct label and sound; duplicate alarms can create more confusion after the time change.

Check calendar events that cross time zones

Calendar appointments should continue to appear at the proper local time when the iPhone changes zones automatically, but travel, remote meetings, and events created in another region deserve a quick review. Open important Sunday and Monday events and confirm the displayed time and time zone with the organizer. For flights, reservations, or online meetings, compare Calendar with the confirmation from the airline, venue, or meeting host.

If you manually changed Date & Time in the past to test an app or game, turn Set Automatically back on. Apple specifically advises against adjusting the device clock to change app behavior. Manual time changes can affect reminders, authentication, message timestamps, and other services that depend on an accurate clock.

Do not “fix” an Apple Watch that is set ahead

Apple Watch lets you display the watch face up to 59 minutes ahead, but that preference does not move alarms, notifications, World Clock, or other system times. Apple explains the distinction in its Apple Watch time-settings guide. If only the face looks fast while alerts remain correct, check Settings > Clock on the watch for the intentional offset before changing anything else.

Your Sunday morning checklist

• Confirm the Lock Screen shows the expected local time.
• Open Calendar and verify your first scheduled event.
• Check that the next alarm or Sleep wake-up is enabled.
• If the clock is wrong, connect to Wi-Fi or cellular data, revisit Set Automatically and Setting Time Zone, then restart.

For most people, the clock change will be invisible. The point of checking now is not to set the time by hand; it is to make sure the automatic systems are allowed to do their job. Once those settings are correct, leave the iPhone connected overnight and let iOS handle the extra hour.