- Open the Calendar app, choose File > New Calendar Subscription.
- Copy/paste the MD-URL, then click Subscribe.
- Enter a name for the calendar and choose a color to help you identify it on your calendar.
- Choose iCloud from the Location menu, then click OK.
![US Holidays Info setting within iCloud calendar](https://support.apple.com/library/content/dam/edam/applecare/images/en_US/icloud/macos-mojave-icloud-calendar-subscriptions.jpg)
Additional instructions can be found here.