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Hi. I am new here.

I just got a new Citizen Eco-Drive Watch. It is a B620 Caliber. I was adjusting the date (this watch only has the date, no day or year). It was around 10:30 PM. I just looked at the manual and it said to not adjust the date between 9:00 PM and 1:00 AM. I am an idiot and I am paranoid. I have not messed with the watch since. Did I break the date mechanism? Also, when is the best time of the day to set the date?
 

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Welcome to the forum..
I never try and change the date between 2100 and 0300 to be on the safe side but doing it once would hardy do harm i would have thought but keep doing it and damage will be done.
 

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Nah, it's actually from 23:00 till 01:00 that you should be careful. Plus, people run around scared like the mechanism will just break into tiny pieces if you adjust it at that time. Maybe that will happen, but in most cases, nothing will happen and the watch will work just fine.
 
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I am sure it will be fine. In the future, adjust the watch beyond 12 to 5 or 6 then set the date to the day before today. Then advance the time 'till it changes at midnight (or thereabouts). It will now be displaying AM today. You can then move round passed 12 again if it is now PM and set the time correctly.

Hope that helps.

By the way, pictures please!
 

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If the date disc is motor driven, you should be fine.
 

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If the watch flips the date tonight, no, you didn't hurt anything....
 
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If the watch flips the date tonight, no, you didn't hurt anything....
The "danger" period for altering the date is about 9.00 pm to 3.00 am. Just as there's no guarantee that the owner will mess the watch up if he alters the date in those hours there's no guarantee that he won't so manufacturers play safe and say that the date should NEVER be altered in this period.
 

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Chances are that your watch is fine. However, as mentioned the only way to know for sure is to just wait 24 hours for the watch to flip the date. Let us know what happens.
 

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Yes, if it still works correctly, then you have learned when NOT to set the date. You should be fine as long as you don't do this repeatedly.
 

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I made the same mistake many years back, and to make matter worst, I didn't get to know what was right. This bad practice went on for at least 2-3 years (not everyday, of course, but whenever I wear my watch). The day came when problem started and had to send in for repair. I can't recall what th problem was, but the service centre did attribute it to my bad practise. Didn't cost me too much, but enough to learn a lesson.

I guess what I am saying is, it will be a problem in the long run, but no immediate damage. Good luck!

Sent from my C6603 using Tapatalk
 

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So, is all well? Or is that the last we'll hear from you?
 

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Per the manual from Citizen...at least for my Nighthawk...adjusting the date after 9pm will generally cause the date not to advance at midnight.

I accidently did this the first time I set mine, and sure enough it did not advance that night. Reset the date during the next morning - and the watch has functioned properly ever since.

Glad all is well with yours!
 

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If you set wind your watch through 24 hours you will see when it starts moving to the next day and when its done. Add 30 minutes on both ends to be on the safe side.

I usually pick up a watch (Watchwinders pffff), wind it through the date set once to get a grip on AM/PM, set it to 6, set the date, set the time.
 
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