How to get updated time-zone information for your Apple device

iPhone, iPad, iPod touch, Apple Watch, Apple TV, and Mac periodically get updated time-zone information. You can also check manually.

     Updated Time Zone Information Available on iPhone


If a country, region, or government announces a time-related change, such as a change to a time zone or Daylight Saving Time:

  • Apple sends a time-zone update to your device.
  • Your device displays an alert that updated time-zone information is available.

To accept the new time-zone definitions from Apple, choose Restart in the alert. Otherwise, your device gets the update the next time you restart it.

How to check for time-zone updates

If you didn't get the time-zone alert, you can still check for time-zone updates manually.

On your iPhone, iPad, iPod touch, or Apple Watch

These steps require iOS 10 or later and watchOS 3 or later. If that excludes your device, you can set the time zone manually.

  1. Make sure that your device is connected to the Internet.
  2. On your iOS device, go to Settings > General > Date & Time.
    To check for time-zone updates for your Apple Watch, do this on the iPhone that is paired with your Apple Watch.
  3. If you see an alert saying that updated time-zone information is available, restart your device to get the update. When you see the message on your Apple Watch, restart it as well. 
  4. If you don't see the alert on your iOS device, return to the previous settings screen, wait a few minutes, then tap Date & Time again. If you see a time-zone–update message near the bottom of Date & Time settings, restart your device to get the update. Wait a few minutes, then restart your Apple Watch.

On your Apple TV

These steps require tvOS 10 or later on Apple TV (4th generation) and Apple TV 4K. If that excludes your Apple TV, you can set the time zone manually.

  1. Make sure that your Apple TV is connected to the Internet.
  2. Go to Settings > General > Time Zone. If you see a message saying that updated time-zone information is available, restart your Apple TV to get the update.
  3. If you don't see the message, press and hold the Menu button on your Apple TV remote to go to the Home screen. Wait several minutes, then return to Settings > General > Time Zone. If you see the message now, restart your Apple TV to get the update. 

On your Mac

These steps require macOS High Sierra. If that excludes your Mac, you can set the time zone manually.

  1. Make sure that your Mac is connected to the Internet.
  2. Choose Apple () menu > System Preferences, then click Date & Time.
  3. If you see an alert saying that updated time zone information is available, restart your Mac.
  4. If you don't see the alert, quit System Preferences, wait several minutes, then open Date & Time preferences again. If you see a time-zone–update message near the bottom of Date & Time preferences, restart your Mac to get the update. 

How to set the time zone manually

  • iPhone, iPad, iPod touch: Go to Settings > General > Date & Time. Make sure that Set Automatically is turned off, then choose a time zone.
  • Apple Watch: Set the time zone on the iPhone that is paired with your Apple Watch.
  • Apple TV: Go to Settings > General > Time Zone. Make sure that Set Automatically is turned off, then choose a time zone.
  • Mac: Choose Apple menu > System Preferences, then click Date & Time. In the Time Zone pane, make sure that ”Set time zone automatically using current location” is deselected, then choose a time zone. You might need to click  to unlock these settings before you can make changes.


The option to turn on automatic date and time updates might not be available with all wireless carriers or in all countries or regions.

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