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THE SIMPLE ANSWER IS: 09/23/2010.
However, according to the U.S. Naval Observatory, the autumnal equinox (Autumn) begins on 09/23/2010 at 03:09 AM UTC (Universal Time Coordinated formerly known as Greenwich Mean Time).
But I live the Eastern Time Zone which is 5 hours behind UTC. So technically Autumn for my time zone begins on 09/22/10 at 10:09 PM.
It may be fine line, and therefore for the sake of simplicity and uniformity I am guessing that most calendars will simply show Autumn beginning on 09/23/10.
What else can I help you with?
What is the first day of autumn 2010 in Canada?
the first day of Autumn is September 21st, 2010
What do you call the day when autumn officially begins?
equinox
What do you call the day that autum official begins?
The first day of Autumn, or the Autumnal Equinox
What day is the first day of autumn?
The first day of Autumn/Fall is September 22nd.
When does autumn 2010 begin?
The answer to this depends on which definition of autumn is being used. In the northern hemisphere, the astronomical autumn begins September 23 at the time of the autumnal equinox. This date is sanctioned by the International Astronomical Union and can vary by a day or two from one year to the next. The climatological autumn begins September 1. This date is sanctioned by the World Meteorological Organization for the northern hemisphere and never changes. The ecological autumn begins locally whenever the leaves change colour and start to fall. This date varies from one region to another and can shift from one year to the next.
What month has the first day of autumn?
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)
When is the first fall day for Colorado 2010?
Fall or autumn begins September 22, 2010 at 11:09 pm est.
When does the southern hemisphere receive most direct sunlight?
In the Southern Hemisphere, the most direct sunlight is on 21 December.Seasons in the Southern Hemisphere are the exact opposite of those in the Northern:First day of Spring is 21 SeptemberSummer Solstice (longest day of the year) is on 21 DecemberFirst Day of Autumn is on March.and Winter begins on 21 June ...
Is September 21 the first day of Autumn?
The first day of Autumn/Fall is called the autumnal equinox.
What is the First day of autumn in England?
Autumn starts on The 21st of September in England
What time does Autumn begin?
Autumn, also known as fall, typically begins around September 22nd in the Northern Hemisphere and around March 20th in the Southern Hemisphere. These dates are the autumnal equinox, when day and night are roughly equal in length.
When is it autumn?
For the northern hemisphere, Autumn normally begins on September 22, but sometimes it can begin on September 23. The last day of Autumn is December 20, so the Autumn months are really October, November, and December. For the southern hemisphere, the first day of Autumn is March 20. The last day of it is June 20. The Autumn months for the southern hemisphere are April, May, and June.
