Tissot PR100 Quartz - Date Change

[Adrian_77]

Hi there!

I bought recently Tissot PR100 quartz and I noticed that it starts to change the date at 0 AM and ends with changing at about 1:20 AM. Is this normal for the quartz movement in PR100?

[mikeynd]

It's normal with lots of watches,not just quartz.I don't understand why it is.

[Adrian_77]

Thanks Mike for your reply! If that's normal for a lot of watches, then I agree that is really strange conception: the date on PR100 changes between 0 AM and 1:20 AM - interval when actually is a new date, but watch shows previous date, or something between previous and next date. This interval of date change I never saw before. I also have Tissot PR200 quartz, an older model with an older ETA movement (which is not produced anymore), and this one changes date between 23:20 and 23:56. This has more sense, than on PR100.

Does anyone else have Tissot PR100 quartz (or any other watch with the same ETA movement) which changes date between 0 AM and 1:20 AM?

[Adrian_77]

Small correction to this one. After more accurate observing, I noticed that PR100 quartz changes the date between 0:15 and 1:25 AM !