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

Days are now warmer and longer, and you might be spotting blossoming trees and flowers, signaling the beginning of spring. The official start of the season is known as the vernal equinox. Vernal means ...

Spring officially begins at 6:45 pm EDT. — -- Spring is here today -- although it doesn't feel like it some parts of the United States. The vernal equinox will officially begin at 6:45 p.m. ET ...