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    Ex-meridian problem
    From: Bruce Stark
    Date: 2001 Feb 16, 3:12 PM

    Russell�I could pose your question in a letter to the Nav. Foundation, but
    turnaround would be slow. The Newsletter comes out only four times a year.
    
    As for me, I don't think I can improve on what's already been said by Steven
    Wepster and others. Perhaps part of the difficulty is that you're mixing
    local apparent noon into this. Admittedly you're close to LAN in both time
    and space. But forget about that. What matters is the local hour angle of the
    sun�the TIME from LAN. The latitude you get is for the place of observation.
    
    The advantage of ex-meridians is they require no plotting. They're at their
    best when the difference between latitude and declination are considerable.
    Otherwise azimuth changes so fast near meridian passage that a small error in
    local hour angle causes a substantial error in latitude.
    
    Unfortunately that's about the best I can do.
    
    Bruce
    

       
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