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    Re: Working Analemma
    From: James R. Van Zandt
    Date: 2006 Nov 12, 16:29 -0500

    
    >   James R. Van Zandt wrote:
    >   >
    >   > I assume that it works at solar noon each day.  I wouldn't be
    >   > surprised if they need to post a conversion table between solar time
    >   > and what the clocks are set to.
    >
    >   By playing with a wonderful web site that maps locations given by
    >   latitude and longitude into most common mapping web sites, I
    >   reckon the L/Lo of the analemma to be N 47d 15.82m, W 122d 29.01m.
    
    The Google site http://www.google.com/maps actually needs no help.
    You can type something like 47.263403,-122.48271 into the search field
    and bring up a map and/or satellite photo of that location.  And "link
    to this page" will give you a string that includes the latitude and
    longitude.
    
    >   Yes, the sun would rise a bit between zone noon and local noon,
    >   but I not sure it's significant enough to require recalibration of
    >   the analemma.
    >
    >   The obvious thing to be concerned about is the hour's correction
    >   for Daylight Time (Summer Time to Europeans).
    
    Come to think of it, they could just adjust the mirror twice a year.
    
                     - Jim Van Zandt
    
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