How to Change the Calendar Region on a Mac

Changing your Mac's calendar region will change the format of your calendar as well as the system date. You can change the calendar format from the 'Language & Region' menu in the System Preferences. You can also set your Calendar app to...
Method 1 of 2:

Changing the Region

  1. How to Change the Calendar Region on a Mac Picture 1How to Change the Calendar Region on a Mac Picture 1
    Click the Apple menu. This is in the upper-left corner of the screen.
  2. How to Change the Calendar Region on a Mac Picture 2How to Change the Calendar Region on a Mac Picture 2
    Click "System Preferences." If something other than the main System Preferences menu appears, click "Show All" at the top of the window. The button looks like a grid of 12 dots.
  3. How to Change the Calendar Region on a Mac Picture 3How to Change the Calendar Region on a Mac Picture 3
    Click "Language & Region." You'll find this in the first section.
  4. How to Change the Calendar Region on a Mac Picture 4How to Change the Calendar Region on a Mac Picture 4
    Click the "Calendar" menu.
  5. How to Change the Calendar Region on a Mac Picture 5How to Change the Calendar Region on a Mac Picture 5
    Click the calendar type that you want to use. This will change the calendar system that your Calendar app and system time & date uses.[1]
Method 2 of 2:

Displaying Alternate Calendars

  1. How to Change the Calendar Region on a Mac Picture 6How to Change the Calendar Region on a Mac Picture 6
    Click the Calendar app. You'll find this in your Dock. You Calendar app can display an alternate calendar alongside your regular one.
  2. How to Change the Calendar Region on a Mac Picture 7How to Change the Calendar Region on a Mac Picture 7
    Click the "Calendar" menu. This appears when the Calendar app is the active window.
  3. How to Change the Calendar Region on a Mac Picture 8How to Change the Calendar Region on a Mac Picture 8
    Click "Preferences."
  4. How to Change the Calendar Region on a Mac Picture 9How to Change the Calendar Region on a Mac Picture 9
    Click the "Show alternate calendar" box. This is at the bottom of the "General" tab.
  5. How to Change the Calendar Region on a Mac Picture 10How to Change the Calendar Region on a Mac Picture 10
    Click the menu to view the alternate calendars.
  6. How to Change the Calendar Region on a Mac Picture 11How to Change the Calendar Region on a Mac Picture 11
    Click the alternate calendar that you want to use. This will add that calendar's numbering system to the upper-left corner of each day in the Calendar app.
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