Remove Subscribed Calendar Alert

Alerts for Subscribed calendars can be disabled in System Settings:

  1. Go to the System Settings app
  2. Go to Accounts & Passwords (Calendar in iOS10 or Mail, Contacts, Calendars in iOS9 and below)
  3. Go to Subscribed Calendars
  4. Go to Go to the calendar you wish to remove the alert for
  5. Set Remove Alarms to ON