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    Re: Longitude by Sunrise example
    From: Marcel Tschudin
    Date: 2010 Feb 5, 09:19 +0200

    Jeremy, your observation seem to have been made under fairly "normal"
    conditions:
    
    Date: 1st July 2009
    Coordinates: Lat=16.5500�N, Lon=129.1250�E
    Atmosphere:  Temperature=27.8�C,  Pressure=1008hPa
    
    Height of eyes: 30m a.s.l.
    LL@Horizon:   9:58:16 UT (observed:   9:58:16 UT)
    UL@Horizon: 10:00:40 UT (observed: 10:00:48 UT)
    
    Observation and calculation agree better than what I generally would expect.
    
    As an additional information:
    Height of eyes: 2m a.s.l.
    LL@Horizon:   9:57:59 UT
    UL@Horizon: 10:00:23 UT
    (at this latitude the setting time at 2m is 17s earlier than at 30m)
    
    I hope these results are of use to you for further evaluating the data
    of your example.
    
    Marcel
    
    
    
    

       
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