Summer is almost over. It officially ends at 7:49 a.m. Saturday. That's the moment when the Autumnal Equinox occurs in the Eastern United States, according to the Old Farmer's Almanac.
The Alamanac explains what's happening:
On the first day of fall—the autumnal equinox—day and night are each about 12 hours long (with the actual time of equal day and night, in the Northern Hemisphere, occurring a few days after the autumnal equinox). The Sun crosses the celestial equator going southward; it rises exactly due east and sets exactly due west.
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Days and nights also have equal length in the spring equinox, too. On Saturday, sunrise occurs at Autumn Equinox at 6:57 A.M. in Mountain View, with sunset at 7:04 p.m., according to The Weather Channel.
Throughout history, groups have celebrated the autumn equinox, partly because it represents harvest time.
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Do you know of events to mark the start of fall? Add them in the comments area below!
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