And, before dismissing ¡°pedant mode¡± for the day, I¡¯ll make the observation that probably neither of us lives close enough to an all-night airport for this to make any practical difference, but the times don¡¯t change at 23:59, they do so at 0200.
I did that specifically and intentionally.
At ¡°Fall Back¡± time change, I don¡¯t much care that I¡¯m getting an extra hour¡¯s sleep that night, or that I will wake up an hour earlier than I expected to, so the Reminder is there simply to *remind* me. Except for our thermostats, pretty much all our clocks auto-change. Even the cars.
But at ¡°Spring Forward¡± time change, I will lose an hour¡¯s sleep, and I want to be reminded of that BEFORE I go to bed, in case I want to go to bed earlier than usual, or something. So even though the clocks shift at 0200, I set my Reminder for 2359, 2 hours before the event.