Get ready for the autumn equinox: How is it different from a solstice?
Fox News
Get your sweaters ready. The autumn equinox will mark the official end of the summer season and the start of fall on Thursday, Sept. 22, at 9:04 pm EST.
The first day of fall and spring are defined as equinoxes, while the start of summer and winter are labeled solstices. They both occur twice a year but have some major differences.
First, according to the National Weather Service, when the Earth's axis is not titled toward, or away, from the sun, it allows for an equal amount of daylight and darkness, known as an equinox.
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