Might also be the case that at 9:50pm the date changeover is just starting to engage and that's taking just enough of the power to prevent the hands from moving past a slight imperfection in one of the wheels.
As an experiment, OP could try setting the time to the wrong AM/PM and see if that changes things.
Not if you're wearing it - you said that it didn't stop if you wore it.
What actual time did it stop when you changed the date to change at midday?
C crocbiteIt still stopped at 9:50pm but will retry with the date change at 12 noon. Tonight I’m trying the watch on my nightstand facedown to see if this has any effect and the tomorrow I’ll try the noon change date.
Thanks
The only difference is the wearing then. So the fact that the hands rub at 9:50 must be overcome by the movement caused by wearing. They probably rub every every hour and a bit when they pass, but you're wearing the watch during the day so it keeps going and stops at the first passing after you take it off.
C crocbiteOk!! I wound the watch and set it facedown at 1pm yesterday on my nightstand and as of 4:40am it is running great! I will let it run facedown until 1pm today and change the date change over to noon tomorrow, wear it till about 9pm tonight and repeat the facedown test.
….and a big thanks for all of you!!
C crocbiteIf that passes I’ll change everything back the repeat the facedown test again…. The repeat with the face up test then repeat again … I’ll even try setting it up on a vertical and 4 positions tests to see if the problem persists in any other position than face up !!! Hopefully if all is good then as mentioned here it will be a simple fit the have the watch hands adjusted!
C crocbiteAlso, am I correct about winding the watch? 20-30 winds and then hear the clicking sounds( assuming clutch)?
The clicking sound is probably the mainspring slipping in the barrel (dried out braking grease) or the tail of a broken mainspring clicking around the barrel.
Just get it serviced, your watchmaker can tell you what was wrong with it.
