I know that a lot of you are making clocks with your and need clock movements. My wife found these and what is cool about these is that they are the “so called” “Atomic” clocks that listen to and sync with WWVB (US National Instituteof Standards and Time). These ONLY work for US time zones, but never have to be set, as long as the battery does not die.
https://www.klockit.com/atomic-clock-movement-3-16-maximum-dial-thickness-bundle.html