To hide them, click to clear the checkboxes next to those. Note that if you’d hidden some of your calendars (for instance, Google Calendar includes a U.S.-holiday calendar that duplicates the one in OS X), they will now be visible again in the app. If you only had your schedules stored on your Mac, use that Option-click trick to make the Library folder visible, then click the Time Machine icon in the Dock to see your backups of that folder, then select Calendars to have that restored from this backup. If your experience is like mine, Calendar should automatically pick up your synced calendars from Google or Apple’s servers. Delete that folder, reboot the Mac, empty the trash and then start up Calendar. With the Library open you should see a “Calendars” folder there. I didn’t get the logic of that and still don’t, as it impedes routine troubleshooting like this and the Bluetooth snafu I covered here in April. OS X hides your Library by default-until 2011’s OS X Lion, it was viewable like any of your account’s other folders, from Documents to Downloads, but then Apple decided it was too risky to keep visible. Think browser bookmarks, your e-mail archives, application preferences… and your calendars. The Library folder is the system’s designated store for data that individual applications use but which you don’t view or edit outside of those apps. Now switch to the Finder, hold down the Option key, click the “Go” menu and select the normally-hidden “Library” folder you revealed by holding down that modifier key.

Calendar for macbook pro