iOS Calendar

1. Open the Settings app
2. Tap "Accounts & Passwords"
   
3. Tap "Add Account"
   
4. Tap "Other"
   
5. Tap "Add Subscribed Calendar"
   
6. Enter this URL: http://z.umn.edu/umdacadcal into the Server field and tap "Next"
   
7. Tap "Save" after it displays the subscription details
   
8. The UMD Academic Calendar should now appear in your Subscribed Calendars
   

Before:

After: