Menustruation and the Moon—is there a connection

In Wiltshire, there is an expression: "Light Christmas, light harvest"[8] meaning that if there is a full moon at Christmas, the harvest will be poor. The Maoris believed that the moon whom they call Rongo*, protects crops. They always planted sweet potatos on the 11th, 27th and 28th days of the lunar month. ................
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