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    Re: Navigation by the Moon
    From: Alexandre Eremenko
    Date: 2021 Mar 27, 17:11 +0000

    Geoff,
    I was trying to use the data which the master mate could possibly keep in his memory.
    
    This is the length of the tropical month (period of revolution of the Moon with respect to Sun).
    It is 29.53 days. Now 360 : 29.53=12.19 (degrees per day) = 0.81 (hour/per 
    day) =48.6 (minutes per day) = approx 49 minutes.
    
    This is a plausible calculation for an educated master mate.
    
    But the calculation must start from some known distance on some known date,
    a date of a solar or lunar eclipse, for example.
    
    Alex. 
    

       
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