Add a calendar feed to your Apple calendar

1. Click "Settings" located on the left side navigation menu.
2. Click the "Calendar" option located in the left side sub-navigation menu. 
3. Copy your calendar feed URL.
4. In your Apple Calendar, choose File > New Calendar Subscription.
5. Paste the calendar feed URL and click “Subscribe.”
6. Enter a name for the calendar and choose a color to help you identify it on your calendar.
7. Choose a location and click “OK.”

Click here for more information from Apple.