The first day of spring is marked by the spring equinox, also known as the vernal equinox. The season also brings another time change.

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

Saturday is finally March 1. We’ve made it through much of the darkest nights of winter and, with the recent warmer weather, people in Massachusetts might be tricked into thinking it’s spring. Don’t ...

The robins are nesting near your bedroom window. Daffodils are fighting their way up through the dirt. Temperatures are beginning to move away from freezing. Yep, spring is coming quickly, or it might ...

Caitlin O'Kane is a New York City journalist who works on the CBS News social media team as a senior manager of content and production. She writes about a variety of topics and produces "The Uplift," ...

Meteorological spring starts on March 1 every year, while astronomical spring begins on the spring equinox, typically around March 20. The vernal equinox marks the first day of astronomical spring and ...