The Autumnal Equinox occurs in September when the length of day and night is nearly equal. This is when the sun shines directly on the equator. People often have equinox parties to celebrate this date.
September 22
In 2011, the Autumnal Equinox begins on September 23rd.
The Autumnal Equinox occurs this year on 22Sep2012 at approx 1400hr GMT
In the Northern hemisphere, daylight hours decrease after the autumnal equinox.
The answer is autumnal equinox.
September 22
For a vernal equinox, it occurs is March 20th. For an autumnal equinox, it occurs September 22nd.
The Answer is September since it is the north
Google it. Or read what I have wrote: An Autumnal equinox occurs on September 2. It is a day when the day time approximately equals night time.
The vernal equinox occurs in March and marks the start of spring in the Northern Hemisphere, while the autumnal equinox occurs in September and marks the start of fall. During these equinoxes, day and night are approximately equal in length all over the world.
The autumnal equinox is also known as the fall equinox and the September equinox. An example of a sentence using "autumnal equinox" is "This year's autumnal equinox falls on a full moon. "
The longest day and shortest night occurs on the summer solstice. The shortest day and longest night occurs on the winter solstice. Midway between these points (2x a year) are the equinox, where the day and night are of equal length.
The adjectives vernal and autumnal mean "of spring" and "of autumn (fall)" respectively. The equinox, when the day and night are even, occurs twice a year. Once in spring and once in autumn (fall) as we move from the extremes of the summer and winter solstices. Therefore we have a vernal equinox (in spring) and an autumnal equinox (in autumn/fall).
12 hours
Autumnal Equinox
The Autumnal Equinox occurs this year on 22Sep2012 at approx 1400hr GMT
The Autumnal Equinox occurs this year on 22Sep2012 at approx 1400hr GMT