Autumnal Equinox 2017: First Day of Fall

Sep 22 - All Day
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Autumn starts again with the autumnal equinox on September 22. Welcome in the fall season on the first day of fall! Specifically, the Northern Hemisphere marks the autumnal equinox on Friday, September 22, 2017, at exactly 4:02 P.M. EDT. The Autumnal equinox—also called the September equinox—is the astronomical start of fall in the Northern Hemisphere and spring in the Southern Hemisphere. Learn more at:


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