The Northern Hemisphere is welcoming Spring 2025 on March 20, also known as the vernal equinox. The jump into spring has come with celebrations and traditions of rebirth around the world for centuries. Here's what to know about the first day of spring.

According to NASA, the first day of spring officially begins at 5:01 a.m. EST on March 20. The vernal equinox is an astronomical event when the sun aligns directly above the equator. This results in night and day being equal — about 12 hours each according to British Vogue.