Good morning, everyone, I have done something I thought I would never do - I changed the date within the forbidden zone. After realizing it, I manually advanced time 24 hours so it would automatically switch the date, then proceeded to set the correct time. The good news, thankfully the date has been changing normally as it would. I have SBGH201.
Here are some consequences, and I hope someone can shine the light on this: I have been monitoring my watch for the last 9 months. When worn daily and stored for the night, it gained 1.69 seconds per day. This is consistent. When stored face-up, it would actually gain time more quickly. When stored on the side, it gains time more slowly. But it would always gain time. So once every 3 months or so, I ended up manually adjusting it back by about 1 minute.
After my forbidden date change fiasco, the watch is in fairly consistent gain when worn, but now will lose time when not worn. For example, if I wear it and store is on its side as I used to - normally would still gain about a second per day - now the average will actually result in a loss of about a second. If I wear it and store it upright, then the watch will gain time of about a second a day. I actually think the current method is easier for accuracy adjustment, since when I start noticing the watch running fast, I can store it on the side and actually lose a second per day. So for the last 15 days since my fiasco, the watch remains within 3 seconds of where I started. I think the new system is much better, since storing position actually allows me to adjust time without messing with the crown! However, I am bothered that I may have caused this by my fiasco and worried about long term consequences. Maybe this was unrelated to date change - just coincidental, since I only check accuracy of watch lately maybe once a week or less. Then when I checked following my mess-up with the date, the watch actually lost 10 seconds over a week (still within limits, but it never lost time before!), so I was more mindful to check accuracy daily since then. And this is what I discovered... Any opinions of what may have happened and whether or now I should have the mechanism checked for any damage? It is still under warranty.