Autumnal Equinox

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This year the Autumnal Equinox, also known as the September, Autumn or Fall Equinox, takes place at 6:03 PM (PDT) on September 22.  The sun will appear directly over the equator at that time.

Summer ends.

Autumn begins.

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Find out more:

• Equinox: National Geographic
• Space.com
• EarthSky
• Royal Greenwich Museum

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