On desktop, when you have an event that spans across midnight but is just a few hours long, it shows in the normal day view. This is what I would expect for a calendar interface. But on mobile, as soon as an event crosses over the midnight threshold, it shows as an all-day event across both calendar days that it touches.

This is confusing because it leads me to believe that my calendar is not occupied at the time those events are scheduled. The mobile functionality should match desktop: show these events in the day view, not as all day events.