Today my cousin’s birthday showed up in my phone’s notifications. Today is not his birthday, but the 11th of September is. So I went to my Outlook contacts to change his birthday from 8/11 (US date format) to 11/8 (rest of the world date format). His details were no longer in my contacts list, but he had 2 birthdays in my Outlook calendar 11th of Sep and Nov 8.
Why are birthdays showing in outlook for people that I don’t even have a contact for? Has anyone else seen this happen?