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  1. #1
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    Default Analogue 12 hr Clock and Time Zones

    I want to make a gift for a friend and need to mount three clocks, one for local time, and one his two daughters who live in other time zones. One lives in a time zone 14 hours behind local time.

    As an analogue clock only dispalys 12 hours I thought I could have two small holes under each clock that had -12 and +12. A brass pin could be placed in the appropriate hole (-12 in this example) to denote the 12 hour difference and the clock adjusted back two hours for the remainder of the time difference.

    Am I on the right track or have I got it totally wrong? Will this work for all times around the world?
    Cheers,
    Rod

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  3. #2
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    To help visualise it here is a rough drawing.
    Cheers,
    Rod

  4. #3
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    Calm is offline Stubby Owner and proud of it. Now coming back to Earth.:D
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    I suggest you go on www.cws.au.com and send Jim an email about the availability of clocks that may do what you want.
    regards

    David


    "Tell him he's dreamin."
    "How's the serenity" (from "The Castle")

  5. #4
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    Thanks, but my first option was to look over his site and there is nothing in a small desk clock for 24 hours. I am looking at the 36mm face clocks as any larger would look out of place on a desk.
    Cheers,
    Rod

  6. #5
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    G'day Rod,
    Have just been in touch with a mate who is a professional clock maker , he suggests
    Yes 3 clocks will work.
    or alternatives

    1.- 24 hour clocks would be easier to tell if it was day or night overseas.
    2.- A time clock that can be set for your time and overseas.
    3.- A clock with a time ring that can be adjusted for the countrys you want to know the time in.

    If you are interersted in fit-ups they are available.
    PM me

    Catch ya Andrew

  7. #6
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    If in the northern hemisphere, the actual offset will be 13, 14, or 15 hours, depending on local and distant states of daylight saving time. I have two clocks (ordinary wall clocks) near my computer; one is now at +15 hours from USEST to represent WWF time. It doesn't take too much mental gymnastics to realise that daytime here is night-time there (and vice-versa), but a signal would help. Perhaps an auxiliary clock (with missing minute hand) could be placed within the housing to trip a microswitch (push-on & push-off, I think) to illuminate a bulb on the panel.

    Joe
    Of course truth is stranger than fiction.
    Fiction has to make sense. - Mark Twain

  8. #7
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    Nothing that small for 24hr clocks
    The smallest is the world time clocks which have a moveable dial to indicate where the person is and these are 90mm diameter.
    Jim Carroll
    One Good Turn Deserves Another. CWS, Vicmarc, Robert Sorby, Woodcut, Tormek, Woodfast
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  9. #8
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    Hi There
    You could also try www.jknowles.com.au
    Lindz

    It's only a foot long, but I don't use it as a rule

  10. #9
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    Thanks for the suggestions. I am running out of time so have decided to go the easiest path and mount three 36mm clocks and let him work out the difference plus or minus.
    Cheers,
    Rod

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