Fall is in the air—officially. The September equinox marks the transition from summer to autumn in the Northern Hemisphere, while in the Southern Hemisphere, spring is just beginning. The term "equinox," derived from Latin, means "equal night." It marks one of two points during the year when the sun sits directly over the equator, and the Earth receives roughly equal amounts of daylight and darkness.
Autumnal equinox
Today in History
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Saffron in bloom
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Porto Cathedral, Portugal
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A day to celebrate teachers
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A red fox on the Swiss side of the Jura Mountain range
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Here s looking Atchafalaya
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Frog Month
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Remembering the Arizona
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National Hummingbird Day
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World Migratory Bird Day
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Today is World Refugee Day
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World Rhinoceros Day
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Flocking together in the Antarctic
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International Roller Coaster Day
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The view will stop you in your tracks
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Aït Benhaddou, Morocco
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J.R.R. Tolkien Day
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Salar de Uyuni in Bolivia
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Yarn bombing in the village of Gurnard, England
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One for the books
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The Roaches ridge in the Peak District, England
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Celebrating Mexico in a Cultural Capital
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Burrowing owls
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Endangered Species Day
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Playa del Silencio, Spain
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It’s National Dolphin Day!
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Autumn equinox
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International Whale Shark Day
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It s Census Day—make it count
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Château de Sully-sur-Loire, Center-Val de Loire, France
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Azaleas blooming on Hwangmaesan Mountain, South Korea
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