How is the lengthof the day and night during that time and why?
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So day and night are only NEARLY a totally equal length on the equinox. The moment when day and night are truly of equal length occurs a few days before the spring equinox, and a few days after the autumn equinox. This is called the equilux.
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one of the earliest of all the devices to tell the time was sundial . the sundial is to be looked be work on son Power
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