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    Re: Vernal equinox
    From: Bill B
    Date: 2014 Mar 21, 03:57 -0400

    On 3/21/2014 2:21 AM, Bill B wrote:
    ....As George H. might query,
    >
    My bad. Give credit where credit is due. Herbert Prinz, both in text and
    graphically, illustrated the historic subtleties.
    
    Risking censure for diverting the hot traditional-navigation
    discussion-group topic from 21st century avionics and interpersonal
    electronic communications, my question remains, "... measured against
    exactly what?"
    

       
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