Omega 565/561 movement date change problems?

Hello, denizens of the Omega Forums. I have owned my 166.026 for a few years now. In all that time it's been an incredible watch. I bought it with unknown service history and some less than stellar timegrapher readings so in May of last year I sent it off to Omega for service (before we start that rant I know the common problems with sending watches to Omega. I didn't get duped, I had my 'reasons'). The watch had to go to Biel as the service center in my country couldn't work on a watch of this age. It came back in good shape, well regulated and despite the cost and the 6 months it took, I was relatively pleased to know that the watch had been taken care of for possibly the first time in a few decades.

Fast forward a few weeks and I go to pop the watch on my wrist before starting the day and I notice the date window is a bit cockeyed. I chalked it up to bad luck and assumed that the power reserve must have just picked down at an awkward time and not had the power to push the date over. Frustratingly it has been doing this about 50 percent of the nights now. The quickset seems to work perfectly, so does the watch when I manually roll the date over through the crown.

Somethings that I have noticed. When I change the date manually by rolling the time forward through the crown the date finishes changing with a kick near 1 am. A similar thing seems to happen around 2 am when I leave the watch to its own devices although it is obviously less powerful or complete. I am not an expert when it comes to watches or movements but I have been very alert in changing the hours to near 6 before operating the quickset date after the watch has been sitting for a while. None of this was a problem before sending the watch in for service.

Does anyone here have an idea of what could be wrong with my watch? I did some googling and this does not seem to be a documented problem with these movements. I want to have a decent idea before I send the watch back to Omega as I am worried that they will take it out of the package spin the date over, try the quickset see those functions are working and send me back my broken watch.

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That is excellent information! Thanks for the tidbit about being ale to adjust the point at which the date flips. I had no idea that was something that could be done! I am thinking that must be the issue. Very jealous that you have such a good local watchmaker that was able to help you out for such a reasonable price.

I'm no expert either but it seemed to me like there could be 2 things wrong with your watch, the 1am date change doesn't seem right, should be around 12pm - and there's probably a secondary friction related issue, again I'm no expert, but maybe trying to quickset these during date change could cause an issue like this, as at that time, one mechanism is locking/pushing while another is trying to jam

But just from the 1am date change, I think you're covered under a warranty fix

Does the hour hand and minutes hand align perfectly at 12am? I don't know whether they can but maybe the hour hand slipped at one point, and there would be a 3rd issue there

For future reference, a 565 movement is like $150 if you're a stalker, and $200 if you're not - and when you bring a good spare movement to a watchmaker during a service, it usually solves all problems (make sure that the serial stays with the watch)

Yeah its been like this since I got it. For some reason I thought it was normal on older watches to have the date change over pretty slowly after midnight. Seems odd that Omega would mess up placing the hands I have to imagine they have pretty skilled people working there. Now I am stressing that messed it up. I don't know what I will do if they try and charge me another 800 bones.

I really appreciate your insight as someone who clearly has a lot of experience with these movements 😀

I would do this but my city is a wasteland for watchmakers. Been to every shop I can find and get terrible vibes from all of them/they explicitly tell me they only do battery changes and send everything else to manufacturers.

Calgary Canada. I have been asking around and the collector community here seems elusive or maybe just dead 🙁. no one I know collects vintage so I have no one to ask. I would love it if you knew someone who could help haha.