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    Re: Determination of the GHA of Aries
    From: David Iwancio
    Date: 2020 Sep 10, 12:14 -0700

    Brian:

    If you're looking to point solar panels, MICA is overkill.  There's some relatively simple formulae here:

    https://www.esrl.noaa.gov/gmd/grad/solcalc/solareqns.PDF

    For more complicated math as well as an in-depth discussion, specifically for using solar panels:

    https://www.nrel.gov/docs/fy08osti/34302.pdf

    And for future reference, GHA Aries is Greenwhich Sidereal Time converted to an angle.  In MICA, you want:

    • Calculate
      • Date & time
        • Sidereal Time...

    I believe the navigational almanacs use Greenwich Mean Sidereal Time specifically, but then we get back to the "overkill" bit.

       
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