Moon Phase formula - updated

wow again one of your legendary test faces

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@mikeoday or @p.hennessey Please Help if you have some spare Time. In my Ignorance I have been fooling myself that this formula gives me the Moon Illumination Percent Value . While it is right for the Full , New and Quarters it is obviously wrong compared to proper values in-between . Is it possible to get it a bit better with Sin or Cos . Thanking you in anticipation .

(round(100-((abs((#MOONAGEPERCENT#)-0.5))*200)))

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