I often find myself planning events in the evening, which I usually set to end at midnight. There are 2 pain points in this process. First, to set it properly at midnight I need to also change the date. So I end up with more actions to take. The second is that changing the start time back, moves the end time to the next day. And I frequently set an initial early time before the actual time is confirmed. Overall this means I have to use double the actions to set evening events.

My suggestion is to add a way to specify that an event should end at midnight, in a way where it would keep the end time at midnight if you change the start time. Visual distinction can be nice but as far as I'm concerned optional.