When Is The Spring Equinox 2025. Spring equinox is the moment in which the sun enters aries. March 20 at 5:01 a.m., eastern daylight time.

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. 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.