If the date or time is wrong on your Mac

The date or time might need to be set again, or it might be using custom format.

Check Date & Time preferences

  1. Choose Apple menu  > System Preferences, then click Date & Time. 
  2. In the Date & Time pane, make sure that ”Set date and time automatically” is selected and your Mac is connected to the Internet. Your Mac can then get the current date and time from the network time server selected in the adjacent menu. 

Date & Time preferences window
To make changes, you might need to click the lock  the lock icon, then enter your administrator password.


If you don't have an Internet connection, or you want to set the date and time manually, deselect ”Set date and time automatically.” You can then click today’s date on the calendar, drag the clock’s hands to the correct time, or use the fields above the calendar and clock to enter the date and time. Then click Save.


Check Time Zone preferences

  1. Choose Apple menu  > System Preferences, then click Date & Time. 
  2. In the Time Zone pane, make sure that ”Set time zone automatically using current location” is selected and your Mac is connected to the Internet.


To make changes, you might need to click the lock  the lock icon, then enter your administrator password.


If your Mac says that it's unable to determine your current location, open Security & Privacy preferences and make sure that Location Services is turned on. From the list of items beneath ”Enable Location Services,” click the Details button next to System Services, then make sure that the time-zone checkbox is selected.

If you don't have an Internet connection or you want to set the time zone manually, deselect ”Set time zone automatically using current location.” Then click the map to choose a time zone.


Check Language & Region preferences

Choose Apple menu  > System Preferences, then click Language & Region.

  • Make sure that the Region menu is set correctly for your region.
  • Use the ”Time format” checkbox to control whether your Mac displays time in the 24-hour format.

Language & Region preferences window

For advanced formatting options, click the Advanced button, then check the settings in the Dates pane and Times pane. These settings control how dates and times are displayed in the Finder and apps. If any settings have been changed, you can click the Restore Defaults button in each pane to use the default settings for your region. If the button is dimmed, your Mac is already using the default settings. 

the Advanced pane of Language & Region preferences

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