(Undated) — Today marks the first day of fall. It’s the day of the autumnal equinox, when the earth’s equator is parallel to the sun as the world slowly tilts back and forth, creating the seasons. The equinox officially occurs at 11:09 p.m. Eastern time. The equinox is also one of the two days of the year in which the amount of daylight hours is about equal to the amount of nighttime hours no matter where you are on Earth. In the coming days, the northern hemisphere will tilt away from the sun, creating longer nights and a chill in the air. The opposite will happen in the southern hemisphere.
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Alex Tsotsos/dba
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09-22-2010 00:12:39
