The first day of Autumn/Fall is called the autumnal equinox.
December 20. December 21 is the first day of winter.
September 21
Autumn officially begins on September 21 and ends on December 21 - 3 months.
Fall in the US According to the website USA.gov, the first day of Fall (Autumn) in the US is Wednesday September 22, 2010, at 11:09 PM ET. (See Related links.)
Part of it is, yes, if you live in the southern hemisphere. In the south, spring begins 21 September. That is the start of autumn in the north.
I remember March 21 is first day of spring - so then June 21 summer September 21 autumn December 21 winter If they are correct then September is both summer and autumn, and does not start on 1st of month also.
Autumn starts on The 21st of September in England
Autumn begins with the Autumnal Equinox and ends with the Winter Solstice.In Northern Hemisphere Autumn is September 22 to December 21.In the Southern Hemisphere Autumn is March 20 to June 20(On leap years all these dates are one day later)
Autumn Reeser was born on September 21, 1980.
september 21
Autumn Reeser was born on September 21, 1980.
December 20. December 21 is the first day of winter.
The name given to March 21 and September 21 is the "equinox". This is when day and night are nearly equal in length, marking the beginning of spring (vernal equinox) on March 21 and the beginning of autumn (autumnal equinox) on September 21.
September 21
Autumn officially begins on September 21 and ends on December 21 - 3 months.
The first day of winter everywhere in the Southern Hemisphere is June 21 and the first day of spring is September 21.
Autumn Dornfeld was born on September 21, 1979, in St. Louis, Missouri, USA.