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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Río Negro, Amazon basin, Brazil
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Duomo Santa Maria del Fiore, Florence
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American robin
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Tafilalet oasis in Morocco
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Beach huts, Southwold, Suffolk Heritage Coast, England
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International Moon Day
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A winter wonderland in Northeast China
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Nomads of the Gobi
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Happy World Meteorological Day
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Global commerce in motion
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It s Slovenia s Independence and Unity Day
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Nesting season for the leatherbacks
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Beech trees and wild anemones, Jutland, Denmark
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Protecting endangered giants
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Nubble Island’s only industry
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Where fire meets water
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Under Parisian skies
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Zion National Park turns 103
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In the belly of Fat Bear Week
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Glowworm caves in Australia
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Beech tree in a cereal field, Hampshire, England
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Lighting it up for Vivid Sydney
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Happy Cinco de Mayo!
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Solar Impulse 2 in Honolulu
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An emerald isle of the Emerald Isle
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Flock together for Cousins Day
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Cloughoughter Castle, County Cavan, Ireland
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Red fox
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It’s Siblings Day!
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It s World Poetry Day
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