What is the autumnal equinox? - CBS46 News

What is the autumnal equinox?

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(Source: WGCL) (Source: WGCL)
(Source: WGCL) (Source: WGCL)
ATLANTA (CBS46) -

Welcome to Fall, which began at 10:21 a.m. Eastern on Thursday. The beginning of Fall is also known as the autumnal equinox. 

What is an equinox?

As the Earth travels around the sun, its axis is tilted, which means sometimes the Northern Hemisphere -- where we live -- is pointed toward the sun (summer), and sometimes we're pointed away from the sun (winter).

But twice a year, neither the Northern or Southern Hemispheres are pointed toward the sun, but instead the sun's rays are shinning directly over the equator, which is called an equinox. 

The first equinox occurs in March and marks the beginning of Spring, while the second occurs in September and marks the beginning of Fall.

During an equinox, we have nearly the same amount of daylight as darkness.

What to expect?

Fall is a transition season for the U.S. and north Georgia. It's the halfway point from the long days and hot temps of the summer to the short days and cooler temps for winter.

As we get closer to the start of winter at the end of December -- known as the winter solstice -- you can expect the days to get shorter with cooler temperatures.

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