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.
Autumn equinox
Today in History
More Desktop Wallpapers:
-
Brown-throated three-toed sloth
-
Is anybody home?
-
A 50-year balancing act
-
International Day for Biosphere Reserves
-
Look up, incoming…
-
A duckling swimming in a water meadow, Suffolk, England
-
Sossusvlei sand dunes, Namib desert, Namibia
-
Makar Sankranti
-
A day for cousins of every stripe
-
Adalaj Stepwell, Ahmedabad, Gujarat
-
International Whale Shark Day
-
Milky Way over Southwest Alentejo and Vicentine Coast Natural Park
-
Singing the blues
-
Happy International Astronomy Day!
-
Yellowstone National Park, Wyoming, USA
-
Natural History Museum, London, England
-
Autumn equinox
-
A plant for all occasions
-
Short-eared owl
-
The Painted Hills, Oregon
-
Tide pools in La Jolla, California, United States
-
International Day for Biological Diversity
-
Shakespeare Day
-
Aït Benhaddou, Morocco
-
Mehrangarh Fort in Jodhpur
-
International Ice and Snow Festival, Harbin, China
-
Grizzly bears, Katmai National Park and Preserve, United States
-
Easter
-
Nazaré, Portugal
-
Marseille welcomes to Olympic torch