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    Re: Today’s the Spring Equinox
    From: Paul Hirose
    Date: 2019 Apr 6, 21:48 -0700

    On 2019-04-05 8:46, David Shoemaker wrote:
    > That is interesting. I got my data from  
    https://ssd.jpl.nasa.gov/horizons.cgi - where did you get your data ? It 
    seems to be more precise,
    
    I used my own software — either the demonstration program for the
    SofaJpl astronomy DLL for Windows or the Lunar program. I can't remember
    which one. Since SofaJpl is the computational heart of Lunar, the
    results would be identical in either case.
    

       
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