Birthdays in Contacts app on Mac one day off

This is a serious issue and bonkers that this has been a known issue for years and still hasn't been addressed.


I have contacts on an exchange server that have a birthdate. They appear correct on my phone and iPad, however, on my Mac, in both the Contacts app and the Calendar app, the birthday is WRONG (it's 1 day later than it should be).


This is very concerning (though I am glad to see it's limited to my Exchange contacts and not all my iCloud contacts too). I recognize there is some bug with the Mac service and a limitation of the Microsoft protocol, but you would think Apple would have a way to handle this so that it doesn't appear wrong in their apps.



I wanted to post on one of the other posts but for some reason they've all been archived/closed despite the issue still being present:

Birthdays show one day late in MacOS, cor… - Apple Community

Birthdays in Contacts app on Mac one day … - Apple Community

Birthdays one day off - Apple Community

iCalendar on MacBook Air is one day off -… - Apple Community

Birthdays in Calendar are off by 1 day. … - Apple Community

MacOS Contacts with Office365 / Exchange … - Apple Community

https://forums.macrumors.com/threads/contact-app-issues-birthdays-day-off-deleting-mail-addresses.2268092/





MacBook Pro 15″, macOS 12.7

Posted on Jul 2, 2025 12:20 PM

Reply

There are no replies.

This thread has been closed by the system or the community team. You may vote for any posts you find helpful, or search the Community for additional answers.

Birthdays in Contacts app on Mac one day off

Welcome to Apple Support Community
A forum where Apple customers help each other with their products. Get started with your Apple Account.