Please click the below link to add to your iOS calendar:

Please follow the below steps to add to your Google calendar

1. Login Google calendar

2. Click Add other calendars

3. Click From URL

4. Paste the below link to the field URL of calendar

5. Click Add Calender

Please follow the below steps to add to your Outlook calendar

1. Login Outlook calendar

2. Click Add calendar

3. Click Subscribe from web

4. Paste the below link to the input field

5. Click Import