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    Re: Sextant Positions versus Map Datums?
    From: Jared Sherman
    Date: 2002 Jan 18, 12:21 PM

    Bill-
    NAD 83 --  30:16:28.82N, 97:44:25.19W --or-- 30d16m28.77992N, 97d44m25.10907s
    NAD-27 --  30:16:28.03N, 97:44:24.09W
    WGS-72 --  30:16:28.68N, 97:44:25.75W
    
    Interesting because using the USGS "Corpscon" conversion tool, I entered the 
    NAD27 position and asked for the NAD83 position, which as you can see differs 
    from the ones that the Texans found. Question being, did they read a map and 
    measure from it? Or convert datums, using a formula different from the one 
    the USPS supplied?
    

       
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