Whether the groundhogs saw their shadows or not, here's when the real first day of spring will be, according to NASA.

Add Yahoo as a preferred source to see more of our stories on Google. The official last day of summer is Monday, Sept. 22, albeit for many, it was considered over after the Labor Day holiday or when ...

Add Yahoo as a preferred source to see more of our stories on Google. While scorching temperatures have made it feel like summer, the official start of the season is set to begin. The first day of ...

The leaves are changing colors, pumpkin-flavored menu items are back and football is on your TV. Fall is back, baby! The official first day of fall, otherwise known as the autumnal equinox, is this ...