Adding Week Numbers to Apple’s iCal

It is often helpful to know what week, out of the possible 52 weeks in a calendar year, a particular week is. Here’s how to tell Apple’s.app Calendar to show week numbers.

1. Open Calendar.app(or iCal on earlier versions of macOS) on your Mac.
2. Choose Preferences from the Calendar menu.
3. Click Advanced in the Toolbar.
4. Click the box to the left of Show week numbers.
5. Close the window.

Now look at your Calendar. You’ll see gray week numbers along the left margin of your Calendar.

To display week numbers in Google’s Calendar see this post.