Oh, I just now saw that the Spring Equinox happened about 20 - TopicsExpress



          

Oh, I just now saw that the Spring Equinox happened about 20 minutes ago (12:57 pm, EDT). Happy Equinox! Then I started wondering whether anyone wondered how it is that we can have equal amounts of daylight and dark at a precise time of the day. (The answer is that the time--and the equinox--is determined by the moment when the sun appears to cross the equator, and that can be determined with arbitrary precision.)
Posted on: Thu, 20 Mar 2014 17:30:56 +0000

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