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    Re: cel nav page
    From: Alexandre Eremenko
    Date: 2012 Mar 26, 13:23 -0400

    On Mon, 26 Mar 2012, Alan S wrote:
    
    > As to the validity of the almanac data, good to year 2050,
    > that will outlast me by quite a bit.
    
    Almanac can be useful well beyond our life span.
    For example, I found Frank's almanac very useful when I
    was studying the Cook expedition observations:-)
    (Results have been posted on this list long ago).
    I don't remember how far Frank's almanac extends to the past,
    and whether it can be safely used in the investigation
    of Hypparchus and Babilonian's data.
    But for XVIII century it worked perfectly.
    
    Alex..
    
    
    
    

       
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