The har­mon­ic cal­cu­la­tions are based on David Ham­blin’s books.

I am aslo grate­ful to Allen Edwall from AstroWin for his kind assistance.

The cal­cu­la­tions use the posi­tions pro­vid­ed by Astro­di­enst Swiss Ephemeris.

This site is free of charge. Noth­ing pre­vents you from buy­ing me a cof­fee or a good restau­rant. Pay­pal Me. :-)

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