September 10th, 2026
If your device calendar is set to Buddhist, Islamic, Persian, Japanese, Hebrew or Chinese, countdowns you added in the last update could disappear from the list, come back as tens of thousands of days ago, or jump hundreds of years into the past when you opened and saved them. Widgets went blank or counted to the wrong day for the same reason.
Dates are now read and written the same way whatever calendar your device is set to, and countdowns that were already knocked out of shape are repaired for you the first time you open the app.
Thanks to everyone who reported this.
Lewis