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.

The first day of astronomical spring – or the vernal equinox – begins on March 20. The vernal equinox means day and night last about the same amount of time. Meteorological spring began on March 1.