It's fall. But Christmas decorations and bags of rock salt popping up in stores serve as a reminder that winter isn't too far away. The winter solstice comes about three months after the autumnal ...

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

The autumn equinox begins Monday, Sept. 22, signaling the official start of fall in the Northern Hemisphere. But while cooler days and colorful foliage are just beginning, it puts the next major ...