is this normal with mechanical watches?

Thread: is this normal with mechanical watches?

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  1. #1
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    is this normal with mechanical watches?

    its 12:40AM and day/date havent fully changed yet?

    this is my first day/date mechanical watch

    valjoux 7750 is the movement

    Last edited by 6speed; September 3rd, 2009 at 07:46.

  2. #2
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    Re: is this normal with mechanical watches?

    Perfectly normal for a 7750. Other movements use immediate changes at or around 12 o'clock. The 7750 takes a more leisurely approach and will take about 40 - 60 minutes to fully change - and the day always takes longer than the date.
    Last edited by CFK-OB; September 3rd, 2009 at 08:04.

  3. #3
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    Re: is this normal with mechanical watches?

    Wow, I didn't know the 7750 was so "leisurely" about date changes. The Seiko 7S watches have a day and date wheel-- the day usually chages around 3:30AM, but the date changes about 5 minutes afte rmidnight.
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  5. #4
    Member Gansan's Avatar
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    Re: is this normal with mechanical watches?

    Perfectly normal. don't worry about it.
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    Gansan

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  6. #5
    Member Rigel's Avatar
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    Re: is this normal with mechanical watches?

    Are you sure that it is a ETA 7750 movement? Day/date indicator should be on the right hand side, and the subdials are completely confusing...

  7. #6
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    Re: is this normal with mechanical watches?

    Quote Originally Posted by Rigel View Post
    Are you sure that it is a ETA 7750 movement? Day/date indicator should be on the right hand side, and the subdials are completely confusing...
    The movement is rotated 180˚ in that watch.

  8. #7
    Member niles316's Avatar
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    Re: is this normal with mechanical watches?

    This makes me wonder...why don't they just set the hands in the factories such that the date will change at midnight? After all it's just a simple procedure. Is it because they want midnight as the time when the date starts to shift rather than midnight being the time when the date has changed completely? Does it depend on individual companies to make such decisions or does it depend on the movements or the designs of the watch?

  9. #8
    Member TNT13's Avatar
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    Re: is this normal with mechanical watches?

    I'm just guessing, but I think it is because it is very difficult to set to an exact time. If you've ever removed hands and needed to replace them, having them turn at exactly 12:00 is very difficult. Although it doesn't keep me from trying! By having them change "sometime" after 12:00 they don't have to be as precise. I could be totally wrong, mind you.
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  10. #9
    Member AAWATCHES's Avatar
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    Re: is this normal with mechanical watches?

    Quote Originally Posted by niles316 View Post
    This makes me wonder...why don't they just set the hands in the factories such that the date will change at midnight? After all it's just a simple procedure. Is it because they want midnight as the time when the date starts to shift rather than midnight being the time when the date has changed completely? Does it depend on individual companies to make such decisions or does it depend on the movements or the designs of the watch?
    It may look simple on the outside, however on a mechanical watch there are gears turning, levers tripped, hands moving, mechanism being wound, etc. The factory generally does set it as close as possible. Some watches are just a little more "crisp" than others. The 7750 movement is complex and it is just quite leisurely about changing the day and the date.

  11. #10
    Member NutellaBear's Avatar
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    Re: is this normal with mechanical watches?

    Why are you in such a hurry to get to tomorrow? Got a hot date or something?

    All 7750's with day-date change dates like that. The 7750's I have with only the date change precisely at midnight.

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    So what difference does it make, whether it's 20 minutes or 20 years, since neither amounts to the faintest echo of the tiniest whisper in the thunder of time.

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