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Old 28 July 2013, 11:31 PM   #23
kilyung
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Join Date: Jul 2009
Location: Cave
Watch: Sundial
Posts: 33,848
Quote:
Originally Posted by kieselguhr View Post
The date change function has no idea what time it is.
The date change function occurs after 24 rotations of the hour hand.
This winds the date change mechanism and it triggers at full tension.
(Correct me if I'm wrong)
Date change can occur before midnite. After midnite. At midnite.
You would only worry if the date change function doesn't "snap" to the next day as a Rolex date should.
To add to this, the perceived date change time is solely based on when the watchmaker pressed the hands back on the watch. You rotate the movement until the date changes, stop the movement, and put the hands back on. Some watchmakers may put it on slightly ahead of the change, others right on, while the rest are after. No big issue. A quick search would have listed many threads on this topic.
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