You might hear the term "autumn equinox" tossed around Sept. 22 on the first day of fall. But what exactly does that mean? Is it different from a solstice? Yes, actually. They mark seasonal changes ...

Twice a year, the sun doesn’t play favorites. Everyone on Earth is seemingly on equal status – at least when it comes to the amount of light and dark that they get. On Monday, we enter our second and ...

The autumn equinox is now upon us! Today marks the moment that the sun crosses the celestial equator, ushering in the beginning of astronomical autumn in the northern hemisphere, which brings with it ...

Day and night will get equal time for a brief moment Monday as much of the world heads into fall. The autumnal equinox marks the start of the fall season for the Northern Hemisphere and the spring in ...

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 ...

The fall season is here, as marked by the autumnal equinox, which will happen Monday. The autumnal equinox will occur Monday, Sept. 22, at 12:19 p.m. MT/1:19 p.m. CT, signaling the end of summer. The ...