andrew When the time zone changes, an all day event is treated like an event that has a time of midnight on the specified date and is shifted by the number of hours of the time zone difference. It should remain as an all day event with no time.
drewpierce Thanks for reporting @andrew. I am constantly affected by this since I travel frequently across time zones and only set specific times on items that are truly time-critical that day. So then all my all-day events get wonky with unwanted 1:00am-2:00am stamps. 😔 FYI @Jay