The author's primary lament is clocks that cannot withstand power flickers, yet every sub-$10 mains voltage clock from Walmart and Target that I've ever seen will take a 9V battery to make them resilient against such power interruptions.
Might want to flip the clock over and check for a battery door before starting next time.
That might do to keep it within a minute during power loss, and maybe that's good enough for most people. But if you really want to be worry-free you need something more high tech.
It would be worth it for me not to have to touch it twice a year for DST.
Might want to flip the clock over and check for a battery door before starting next time.