One of two on my wrists today. My 32-year old Rolex Oyster Date-Just. I have serviced this watch every 5 years or so, since new. It had gotten to the point where it was telling me that servicing was due again. After servicing it circa 2015, it had settled in to a loss of about 10 seconds per month. But earlier this year, it was losing about 18 seconds per month! Time for a service. I serviced it on about October 20, and set it to the second. I didn’t touch the regulating screws at the time. As of this morning, since servicing it 11 days ago, it has picked up 6 seconds. I think that is close enough.