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There is an equinox in March and September. They are the time of the year when the tilt of the earth does not put either the northern or Southern Hemisphere tilted towards the sun. The Autumn equinox is the one that occurs in September.

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12y ago

It is one of the two times of year that the sun is over the equator. It happens around September 21/22 each year. Daylight and darkness are approximately equal.

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Q: What is autumnal equinoxes?
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The vernal and autumnal equinoxes where is the sun in relation to the equator during?

At the Equinoxes, the Sun is directly above the equator.


When do fall and spring occur?

They begin at the vernal and autumnal equinoxes


What are March 21 and September 21?

The vernal and autumnal equinoxes, respectively.


In 2010 when are the vernal and autumnal equinoxes?

For a vernal equinox, it occurs is March 20th. For an autumnal equinox, it occurs September 22nd.


What is autumnal vernal equinoxes?

The equinox is either vernal (spring) or autumnal. It can't be both. But spring in the northern hemisphere is autumn in the southern.


Which phenomenon occurs when the Sun crosses the plane of Earths equator?

The Equinoxes - Autumnal and Vernal (or Spring). The hours of daylight equal the hours of darkness.


What is the length daytime of autumnal equinox?

At any of the equinoxes, both the day and the night have about 12 hours each, almost anywhere on Earth.


What does the word eqinox mean?

Equinox is the time of year when the day and night are equal, which occurs in March and September. They are known as the Vernal and Autumnal Equinoxes.


What is the first days of the equinoxes?

Autumn.It is regarded by some as the start of Autumn. There are different perspectives on when exactly Autumn starts, but for some it is the Autumnal equinox.


What relationship exists between the spring and autumnal equinoxes and the position of the sun in the sky?

At the moments when spring and autumn begin, the sun is directly over the equator.


How many times a year do equinoxes occur?

There are two equinoxes (i.e. vernal/spring and autumnal/fall) every year.


What do the equinoxes signify?

An equinox occurs when the length of the day is equal to the length of the night. Here on Earth, it occurs around March 21 (the Vernal Equinox) and September 21 (the Autumnal Equinox).