Autumn Equinox in McLean on Saturday
The equinox marks the first day of fall 2012 in McLean.
Summer is almost over. It officially ends at 10:49 a.m. Saturday. That's the moment when the Autumnal Equinox occurs in the Eastern United States, according to the Old Farmer's Almanac.
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.
Days and nights also have equal length in the spring equinox, too. On Saturday, the sun will rise in McLean at 6:56 a.m. and set at 7:07 p.m.
How are you celebrating Fall?