Fall isn"t just marked by the calendar. Each September, Earth"s subtle tilt brings the autumn equinox—one of two times a year when day and night are nearly equal in length. It marks the beginning of fall in the Northern Hemisphere. From solar alignments to changing leaves, nature offers its own quiet signals that the season has shifted. While for most of us it may seem like just another day, ancient cultures paid close attention to this change. Sites like Chichén Itzá in Mexico and England"s Stonehenge were designed to align with the rising or setting sun during equinox days.
Autumn equinox
Today in History
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Cypress trees in George L. Smith State Park, Georgia, United States
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Centuries of time in a Delicate Arch
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Walton Lighthouse, Santa Cruz, California, USA
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Glacier National Park, Montana, USA
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Amur leopard cat, Russia
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A kiss and a sigh
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Cape Breton Highlands National Park in Nova Scotia
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The Rainbow Bridge
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World Meteorological Day
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Pacific Park, Santa Monica State Beach, California, United States
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Up and away!
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Lake Superior, Thunder Bay, Ontario
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King of the jungle? Nope
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The largest gypsum dune field
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The sprout with amazing potential
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Old Rock Day
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Great horned owl
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The worlds most exclusive beach?
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Serene waters on a trembling earth
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World Meteorological Day
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Hemakuta Hill, Hampi
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Giddy family fun
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Sydney Harbour, New South Wales, Australia
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Spire Cove in Kenai Fjords National Park, Seward, Alaska, United States
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We’ve made it to Halfway Day!
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Where history comes alive
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Pont Alexandre III, Paris, France
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Aqueduct, Arkadia Park, Poland
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