According to NASA, the equinox occurs twice a year, once in March and once in September, when the day and night are of equal length.

September's (sporadic) sweater weather chill and the changing leaf colors are a sign that the first day of fall is near. Here's what to know about the autumnal equinox and fall foliage forecast map ...

It's the autumnal equinox, which means it's the first day of fall (astronomically speaking). This past weekend's rain finally helped to relieve Ohio's drought conditions as the Buckeye State's fall ...

PHOENIX (AZFamily) — Autumn arrived at 11:19 a.m. on Monday. Officially called the autumnal equinox, this is the exact time that the earth is tilted in such a way that the sun’s rays directly hit the ...

Stars and planets are lining up for the change of seasons during the Northern Hemisphere's autumnal equinox this year.

It’s fall, y’all, so now you can officially get out the warm autumn tones and consume all of the Pumpkin Spiced items you want, without being judged for being too early. Sept. 22 marks the first day ...

A few different weather factors determine how bold Tennessee's fall colors appear, when peak season will be and how long the ...

Fall is officially here. Here's when the autumnal equinox happens and when the United States changes the clocks at the end of daylight saving time.