How to Display a Calender on Mac Desktop

By Steve Gregory

OS X Mountain Lion's Calendar application can display several calendars.
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The Calendar application in OS X Mountain Lion has an Accounts feature that enables you to download and view your online calendar on your desktop. The information from your online calendar -- such as Google Calendar -- is duplicated in the Calendar application. After you synchronize your online calendar with the Calendar application, you can view your online calendar's details on your desktop even if you take your computer out the office or your company's Internet connection is temporarily offline.

Click the Calendar icon from the dock to open the Calendar application on your Mac's desktop and then open the "Calendar" menu.

Select "Preferences" from the drop-down list and click the "Accounts" tab.

Click the "+" button to open the Add Account window.

Select your online calendar provider -- such as Yahoo or Google -- from the Account Type drop-down box.

Enter your account's email address and password in the appropriate fields.

Click the "Create" button to add your online calendar to the Calendar app.

Click the "Calendars" button and select your online calendar to display it in the Calendar window on your desktop.


The Calendar application needs a connection to the Internet to synchronize with your online calendar.

If you want your online calendar to fill your Mac's entire desktop via the Calendar app, click the opposing arrows at the top right corner of the Calendar window. To go back to the window's previous size, point your cursor to the screen's top right corner and wait for the menu bar to display. Click the opposing arrows.

You can automatically sync your online calendar on the Mac's Calendar app to your other Apple devices -- such as an iPad -- via iCloud. Launch Calendar on your Mac and click the "Calendars" button. Select the online calendar and open the "Calendar" menu. Click "Get Info" and select "iCloud" from the Location drop-down box. Click the "OK" button.


Information in this article applies to an Apple computer running OS X Mountain Lion. Instructions may vary slightly or significantly with other versions.