It's usually on the 23rd of September. (My name is Autumn, based on my birthday, which is the first day of autumn....the 23rd of Sept.)
The first day of Autumn/Fall is called the autumnal equinox.
The first day of winter is 45 days after the autumn equinox [mid autumn] and 45 days before the winter solstice [mid winters day]. The first day of winter falls on about the 5th November, which as a date was celebrated by the lighting of fires and beacons.
The first day of autumn is called the autumnal equinox.
the first day of Autumn is September 21st, 2010
The first day of winter is 45 days after the autumn equinox [mid autumn] and 45 days before the winter solstice [mid winters day]. The first day of winter falls on about the 5th November, which as a date was celebrated by the lighting of fires and beacons.Read more: First_day_of_winter
The first day of Autumn/Fall is September 22nd.
Autumn starts on the date of the Autumnal Equinox and winter starts on the day of the Winter Solstice.
23rd September 2011 is the start of autumn/fall
The first day of the dwarves' New Year. It is the first day of the last moon of Autumn on the threshold of Winter. It is Durin's Day when the last moon of Autumn and the sun are in the sky together.
September 22
Autumn
The first day of autumn/fall falls on the date when day and night are equal in length. The precise date actually varies. This year it was September 22. That will be the date also in 2009. But in 2010 and 2011, that date will be September 23. In 2012 and 2013, it will again be September 22.