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    Re: Calculate GHA Aries in your head
    From: Geoffrey Kolbe
    Date: 2021 Mar 1, 21:54 -0800

    Gary Lapook wrote:

    "If you also memorize the coordinates of about ten well chosen stars then you can do celnav without an almanac, completely from memory."

    So finally, we find out how John Wayne and other movie-navigators are able to hold up a sextant and call out the latitude and longitude of their position. No mystery to it after all.....

       
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