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    Re: lat/long from meridian passage
    From: James N Wilson
    Date: 2011 Jan 25, 06:54 -0800

    George:
    
    Yes, I did get it backwards, and thanks for setting things right.
    
    Jim Wilson
    
    On Tue, 25 Jan 2011 07:58:29 -0000 "George Huxtable" 
    writes:
    > Jim Wilson wrote-
    >
    > I'll attach a diagram which shows that N-S vessel movement or
    > declination
    > change affects time of meridian passage. Time of highest altitude is
    >
    > different from this.
    >
    > ==============
    >
    > Hasn't Jim said that the wrong way round? From a fixed longitude,
    > the time
    > of meridian passage is unchangeable, affected only by the rotation
    > of the
    > Earth and the position of the Sun.
    >
    > What changes, depending on the North-South speed of the vessel, and
    > the
    > North-South motion of the Sun in declination, is the time of highest
    >
    > altitude.
    >
    > George.
    >
    > contact George Huxtable, at  george{at}hux.me.uk
    > or at +44 1865 820222 (from UK, 01865 820222)
    > or at 1 Sandy Lane, Southmoor, Abingdon, Oxon OX13 5HX, UK.
    >
    >
    >
    >
    >
    >
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