Last night I went around and changed all the clocks.
I'd heard somewhere that it's bad for the mechanisms of mechanical electric clocks to turn them backwards, so instead of turning the wall clocks one hour back, I turned them 11 hours forward.
My alarm clock has two buttons for time change, one for hours and one for minutes. Press the hour button once and it goes one forward; it doesn't go backwards. And since the clock is 24-hour, changing it in fall involves either holding the button down and hoping you lift your finger at the right moment, or just pressing the button 23 times. I did the latter.
In my new car, I have for the first time ever a clock whose time-change mechanism is sufficiently intuitive that I do not have to dig out the manual and figure it out from scratch every time DST goes on or off.