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    Re: NA daily pages, moon
    From: Frank Reed
    Date: 2008 Oct 30, 01:12 -0400

    Bill, you wrote:
    "The Nautical Almanac daily pages list the upper and lower meridian passage
    of the moon. Of what use is the lower-meridian-passage information in the
    latitudes that the majority of people live in and sail?"
    
    Completeness. Some people may want to use the NA in polar regions.
    
    And:
    "Perhaps a rough estimate of velocity and tides?"
    
    Yes, it's useful, just barely, for estimating tides if you already know some
    local data (the time offset between meridian passage and high tide is
    relatively stable in many areas). But I think there's general agreement that
    the data in that little moon box have very limited navigational value. For
    another example, why do we need to know the moon's percent illumination (to
    the nearest percent)? The percent illumination was added in the 1980s. Why
    wasn't the small phase diagram sufficient?
    
     -FER
    
    
    
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