Beginning Of Spring 2025 Events. The first day of spring is in 2025 on march 20 (according to the astronomical definition). The data correspond to the seasons of the year.

Spring equinox 2025 (beginning of astronomical spring) on the day of the spring (march) equinox, the sun crosses the celestial equator, moving along the ecliptic. The first day of spring is in 2025 on march 20 (according to the astronomical definition).