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    Re: GHA of the Moon
    From: Michael Bradley
    Date: 2020 Oct 4, 05:01 -0700

    James

    There is an easy way to get the Moon's Merian passage where you are, using (initially) any of the many web almanac resources. One excellent option is Bill Ritchie's excellent Astron web page:

      https://friendsofthevigilance.org.uk/Astron/Astron.html 

    Enter your longitude and date/time, then look in the bottom right hand corner where Astron displays the day's Moon's Merdian passage, calculated for your longitude.

    Do that maybe once a week, write the one answer down on a beer mat, then  'interpolate'  in your head remembering that the Moon turns up approximately 3/4 hour later every day.

    Michael Bradley

       
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