Older people always remind me to change my clocks for Daylight Saving Time.
I haven't used a clock in years that I need to manually reset. Older people don't seem to realize clocks on phones and other devices reset automatically.
I'm almost certain that even with mechanical clock hands, it's still almost certainly timed by a quartz crystal these days, and even for the past 30+ years.
The quartz crystal is usually supposed to 'tick' at a rate of 32,768 cycles per second, but not all quartz crystal timers are made to perfect timing.