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:

Nov 15, 2024Yi Peng lantern festival, Chiang Mai, Thailand
Do pandas enjoy winter?
Sep 24, 2023World Rivers Day
Oct 16, 2025Eurasian lynx
Jan 3, 2025Happy Birthday, J.R.R. Tolkien!
Sep 26, 2023Venice Skatepark, Los Angeles, California
King of the ocean
Gravity-defying wonders of the world
Jan 17, 2025Brown pelican, San Diego, California, United States
Stairway to where?
Nov 22, 2023Grand Teton National Park, Wyoming
Where is this historic hotel?
Alps of the sea
Revered ruins
Jan 18, 2024Pont Alexandre III, Paris, France
Spring is the time for billing
May 23, 2025World Turtle Day
Preserving Alaskas natural beauty
Where are these birds headed?
Aug 24, 2024Katahdin Woods and Waters National Monument, United States
Aug 23, 2025St. Barbaras Cathedral, Kutná Hora, Czechia
May 10, 2025Minnesota State Capitol, St. Paul, Minnesota, United States
Sep 18, 2024Gujō Hachiman Castle, Gifu Prefecture, Japan
Nov 8, 2023Crystal River, Three Sisters Spring, Florida, USA
Heaven meets Earth!
May 12, 2024Mothers Day
Monsoon awakens the sleeping mountains
Where is this historical bridge?
Rocks rock!
May 19, 2024Vernazza, Cinque Terre, Liguria, Italy