Why are Calendar events syncing days incorrectly?

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Level 1

5 points

Why are Calendar events syncing days incorrectly?

When I create an event in Calendar on my iPhone, the synced event on my Mac shows up 2 days earlier at 11pm (whatever the original time set on my iPhone event). I have the same issue when doing it on my Mac first, it syncs 2 days earlier at 11pm on my iPhone.

I don't understand what happens.

This is only happening with new created events, from a few weeks now (I am guessing since last OS update but I can not be sure). Coming events created a few weeks ago are synced correctly.

Thanks in advance for your help.

[Re-Titled by Moderator]

iPhone 12 mini, iOS 18

Posted on Mar 5, 2025 9:52 AM

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Answer 1

s.achraf

Level 1

14 points

Apr 8, 2025 2:06 AM in response to HindCalypso

Hey Folks, I'm having the same problem.

When I create a calendar event on my iPhone (iOS 18.4), it shows up 2 days earlier at 23:00 on my Mac (macOS Sequoia 15.4).

And if I create the event on my Mac, it shifts 2 days earlier at 11pm on my iPhone.

This only happens with new events, older ones created before sync fine.

I double-checked my time zone settings on both devices and tried enabling Time Zone Override, but no luck.

This bug is making the Calendar app almost unusable for me, I can't create or update events anymore since they end up completely unreliable.

Hope there’s a fix soon.

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Why are Calendar events syncing days incorrectly?

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