When Is the First Day of Autumn?

Answer

Ask.com Answer for: when is the first day of autumn
The Autumnal Equinox is on Tuesday, September 23, 2014.
The Autumnal Equinox is considered to be the first day of the Fall Season, when the length of night and day are approximately equal in length.
Q&A Related to "When Is the First Day of Autumn"
Autumn is three months long, from the autumnal equinox to the winter solstice. This will be from mid-September to mid-December in the Northern Hemisphere and mid-March to mid-June
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1. Decorate the house. Each season has its decorations, so why not brink autumn to your house? Things such as owls, foxes, acorns, pumpkins, and leaves are great autumn decorations
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Autumn (AKA 'fall' in American English) marks the transition from summer into winter
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Tuesday Sept 22, 2009 was the first day of Autumn. Ask us anything! Enjoy!
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3 Additional Answers
The first day of autumn is the fall equinox. This is usually the day when the sun crosses the celestial equator moving southward. The dates of zero tilt of the Earth's equator usually correspond to the autumnal equinox and the vernal equinox.
Autumn, also known as Fall in some countries, is the season when the leaves fall from the trees. Autumn Equinox is experienced on the 22nd/23rd of September in the northern hemisphere, and 20th/21st of March in the southern hemisphere. At this time, the sun is directly overhead at the equator and the days and nights are about the same length. It is also known as September equinox and signifies the first day of autumn in the UK.
In the northern hemisphere, the first day of autumn season starts on the equinox. This is when the sun crosses the celestial equator moving southward. In 2010, the first day of autumn is 23rd September.
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