There is a small update in the Tools. I’ve added a new tool. This new tool can find a point of the ecliptic from its right ascension, oblique ascension, and oblique descension.
I thank rabbi Avraham Ibn Ezra for the inspiration 
Checking his method of cusps calculations, I felt a necessity of this tool.
Though, it is a usual thing in old-fashioned calculations in various house systems, actually. Regiomontanus has the same searching for the ecliptical point from its oblique ascension.
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Tags: Blog, calculation, oblique ascension, oblique descension, Primary directions, right ascension, tools
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