Autumn equinox 22 Sep 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

Life on the lake
22 Sep 2023Hobbit Day
22 Sep 2024Autumn equinox

More Desktop Wallpapers:

A wave of remembrance
West of Windermere
24 Nov 2023Green Friday
2 Jul 2024Hampton Court Palace Garden Festival
A cantilevered window to the past
Tomb of the Golden Pharaoh
25 Nov 2023Toledo, Spain
Pier perfect
Portable portals into our imagination
The lonely castle
Winter wonderland
29 Jan 2024Gollinger Waterfalls, Salzburg, Austria
Sep 8, 2023International Literacy Day
4 Feb 2026Andermatt village in the Alps, Switzerland
12 Feb 2024Darwin Day
21 Oct 2024Cypress trees in George L Smith State Park, Georgia, United States
2 Oct 2023World Architecture Day
19 Oct 2024International Archaeology Day
International Nurses Day
Will we be ready for the ‘big one?’
27 Jan 2026Dalmatian pelicans, Lake Kerkini, Greece
A record-breaking reign
12 Apr 2024Arches National Park, Utah, USA
Aug 29, 2023American bison, Grand Teton National Park, Wyoming
Stealthy pollinators
11 Apr 2025Tulips, Netherlands
A time-worn mediaeval marvel
24 Jul 2024Cousins Day
23 Aug 2024Prasat Phanom Rung temple ruins, Thailand
29 Mar 2024South Stack Lighthouse, Holyhead, Wales