My late Beloved, Paul Lawler, was originally a watch/clock maker.
When he passed from cancer/chemo in 2014, our wall clock did indeed cease at 4.15 - his time of death.
Then a couple of years later, the wall clock in our computer room (where I spend most of my time!), also stopped at 4.15.
I've never felt able to re-set them, but, maybe I should - to test if he's still around??!!!

Cheers, R-J
(Down Under)