Autumn equinox Sep 22, 2025

Autumn equinox

Autumn 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 autumn 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.

© Danita Delimont/Getty Images

palette

Today in History

Colours of Colorado
Sep 22, 2023World Rhinoceros Day
Sep 22, 2024Bada Bagh complex in Jaisalmer, Rajasthan

More Desktop Wallpapers:

May 3, 2024The Sonoran Desert, Arizona, US
Sep 14, 2023Przewalskis horses, Hustai National Park, Mongolia
Sep 19, 2024Obereversand Lighthouse, Dorum, Germany
Jan 30, 2024Martyrs’ Day
Mar 23, 2025World Meteorological Day
Feb 18, 2025The Great Blue Hole, Belize
Apr 30, 2024Cheetah in Ngorongoro Conservation Area, Tanzania
Jewel of the Adriatic
Jul 22, 2025Badlands National Park, South Dakota, United States
Dragon tails trail to the sea
Dec 7, 2023Verdon Gorge, France
We can all just get along
Jul 9, 2025Independence Day of the Argentine Republic
Nov 23, 2024Fibonacci Day
Switzerland of India
May 15, 2025Palace of Westminster, London, England
Jan 11, 2024Eurasian lynx
Oct 30, 2024Edinburgh Castle, Scotland, United Kingdom
Nov 16, 2025A traboule in Lyon, France
Sep 29, 2024West Cornwall Covered Bridge, Connecticut, USA
Stairway to where?
The animal kingdoms great migration
A time-worn medieval marvel
Nov 16, 2024Wadden Sea coast, Friesland, Netherlands
Mar 30, 2025Sydney Harbour, New South Wales, Australia
Jun 23, 2024Dhaka, Bangladesh
A future built on the past
Jun 5, 2024World Environment Day
Oct 18, 2023Kodiak National Wildlife Refuge, Alaska
Jun 23, 2025Elbe river in Dresden, Saxony, Germany