How can I recover a deleted Calendar by accident?

You may be able to retrieve it if you have been using Time Machine to back up. Have a look at this site which walks you through a method which worked for the author.

http://chasingaftermoonbeams.blogspot.co.uk/2012/05/restoring-lost-ical-events-a nd.html

Please note that I post this for information: I've not tried this and I know nothing about the author. Back up what you have now before you start attempting this.

If you don't have a backup of the folder in your Library where the calendars are kept (user/Library/Calendars) which was made before the deletion, then there is no way of retrieving it.

Hello Roger,

The problem is that when you using iCloud in the browser you can mistakly hit on the delete button couple of times and this will imidiatley delete some reminders... i think Apple should set some pop-up message to approve deletion of the message before it actually deletes it...

Nick.

I deleted two calendars and I had a backup two days ago which is good enough for me, how can I retrieve those calendars from my backup?