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    Re: Beginner moonrise and set question
    From: Bill B
    Date: 2004 Sep 23, 02:42 -0500

    > Actually, 24h rotation of earth is also slightly MORE than 360 deg arising
    > from the earths orbit around the sun
    
    Relative to what?  Agreed the Earth has to over-rotate relative to the stars
    for the Sun to be close to the meridian passage at noon (or any other
    reference point). If it rotated 360 d relative to the stars approx. 182.5
    days through the cycle noon would be dark--AKA midnight.
    
    > Don't have the numbers handy .. but 23h 56m and odd seconds sounds about right
    
    Being a non-hard scientist, I've tried to derive that figure from a
    multitude of sources.  It is a lot more consistent than a woman, but seems
    to float a bit if I do the math.
    
    Closer to the point:  A sidereal day goes by in 23:56:something.  A solar
    day in approx. 24:00:00 plus/minus eq, time. So I don't think I can apply
    almanac arc-to-time to stars.
    
    Too the point, given the odd (compared to solar/sidereal time) motion of the
    moon, can I apply the 15d = 1 hr (solar) arc-to-time to determine moonset at
    my longitude?
    
    Thanks
    
    Bill
    
    
    

       
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