Autumn has officially begun! In the Northern Hemisphere, the autumnal equinox falls on September 23 this year, marking the beginning of autumn and the Earth and Sun"s unique positions. Today is one of the two moments in the year when day and night are equal in length, thanks to the Sun"s location exactly above the Equator. The same celestial phenomenon applies to the Southern Hemisphere, but it is their vernal equinox as they head into spring.
Autumnal equinox
Today in History
More Desktop Wallpapers:
-
Just a couple of know-it-owls
-
What are these colorful insects?
-
Serra de Tramuntana, Balearic Islands, Majorca, Spain
-
Celebrating the tropics
-
Sand dunes in the Sahara, Algeria
-
Nature at its colourful best
-
Portable portals into our imagination
-
Lake Magadi, Kenya
-
Autumnal equinox
-
Red rock country
-
European hedgehog
-
A 50-year balancing act
-
Let’s protect our turtles
-
December solstice
-
Germanys green heart
-
A legend sprung from the ground
-
A peck between penguins
-
Race to the finish
-
Cheetah in Ngorongoro Conservation Area, Tanzania
-
Panoramic Penzance
-
Shark Awareness Day
-
Best views tower
-
The envy of postcards and snowglobes
-
Stones on the solstice
-
Boreal owl
-
Christmas Eve
-
Something to ‘bee’ thankful for
-
Female pyrrhuloxia in Texas, USA
-
Stormont Estate, Northern Ireland
-
A high-flying royal tradition