Add a calendar feed to your Outlook calendar

1. Click "Settings." 
2. Click "Calendar" on the left menu.
3. Copy your calendar feed URL.
4. On the Outlook navigation bar, click the App Launcher (a square made up of tiny white squares) and click Calendar.
5. Under the Outlook Calendar navigation bar, click the “New” drop down arrow and click “Add calendar.”
6. Click “From internet” and in the Link to the calendar box, paste the calendar feed URL.
7. In the Calendar name box, enter a name for the calendar.
8. Click Save.

Click here for more information from Outlook.