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length of day at every 10° latitude in hours and minutes dec 22 winter solstice N Hem June 22 Summer Solstice N Hem of sun and earth

October 15, 2012

length of day at every 10° latitude in hours and minutes dec 22 winter solstice N Hem June 22 Summer Solstice N Hem of sun and earth

 

length of day at every 10° latitude in hours and minutes dec 22 winter solstice N Hem June 22 Summer Solstice N Hem of sun and earth

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