I cannot offer any help, but I have same issue. In my case I changed the birthday of a contact (I had the wrong year) and I now have two birthday events in the iCloud calendar. I deleted the contact and recreated it. I now have three birthdays in my iCloud calendar for the same contact! The calendars on my mac and ipad are correct, it's just the iCloud calendar that has the error. Good luck!
Same issue here!
I deleted a contact at my iPhone Calendar and it was correctly synchronized to iCloud and dissapeared from the iCloud adressbook too. However, the Birthday is still present in the iCloud birthday calendar. The birthday calendar only refreshes every one hour, but even after two days the birthday from this deleted contact is present!
BIrthdays from new created contacts appear in the birthday calendar as they should and the iPhone birthday calendar is also correct in every way.
What can we do to get rid of these bad entries from deleted contacts in my iCloud birthday calendar?
So, this is a few years late, and I am sure that you have solved the problem by now, or given up in frustration...
I came across this problem today, and found an easy solution that worked for me:
- Make sure that the contact card is deleted in Contacts
- Uncheck "Birthdays" in your calendar list
- Close Calendar
- Open Calendar
- Check "Birthdays" in your calendar list
This should clear the unwanted birthday from your calendar. I hope this works for you.