Level 1 (4 points)

iPhone/iPad Calendar: All-day events display as two days after Nov 2026

Subject: All-day events and birthdays display as two-day events after November 1, 2026

I’m in Alberta, Canada. On my iPhone 13 mini/iPad mini 5th gen running iOS/iPadOS 26.7.1, Apple Calendar displays ordinary all-day events and the automatically generated Birthdays calendar as spanning two days for dates on or after November 1, 2026.

The same calendars display correctly on my MacBook, which is on the same account. Gmail and iCloud calendars are syncing normally, and the yellow account-warning triangles have disappeared.

I have tried restarting the device, turning Birthdays off and on, disabling Calendar Time Zone Override, and confirming that Date & Time is set automatically. The issue persists.

Alberta is changing its daylight-saving/time-zone rules around November 1, 2026. Could this be related to the time-zone data used by iOS/iPadOS Calendar? Please confirm whether a software or time-zone-data update is required.

Please advise how to preserve the correct all-day dates without manually editing each event.

Posted on Oct 5, 2026 11:19 AM

2 replies

sberman

Level 10 (280,982 points)

Oct 5, 2026 1:01 PM in response to erinfromnb

erinfromnb wrote:

Alberta is changing its daylight-saving/time-zone rules around November 1, 2026. Could this be related to the time-zone data used by iOS/iPadOS Calendar?

We cannot speak for Apple here, but that sounds extremely likely.

Also see this related discussion:

Apple Calendar events one hour late from … - Apple Community

Michael Zajac

Level 1 (31 points)

Oct 30, 2026 12:05 PM in response to erinfromnb

Me too, on iPadOS 27.2, in Manitoba where we switched to permanent DST. Not corrected after force-quit, restart, or toggling the time-setting and time-zone settings.

But it doesn’t affect my macOS 26.7.2 (Intel) nor iOS 27.2. Must be a display error. Hoping it gets fixed with an update.

Originally posted at discussions.apple.com/thread/256370950