Questioning Visibility Curves for the Sighting of the Moon

UPDATE 7-16-14: An additional section has been added near the end covering the Islamic Crescents’ Observation Project visibility map. As the reported sighting came in from Yemen on Friday June 27, 2014, one of my friends remarked, “that Yemeni must have been high.” I laughed, not only because Yemenis are known to chew a semi-intoxicating substance called […]

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