When Is Spring Equinox 2025. The spring equinox, also known as the vernal equinox, is one of the four solar festivals of the year. Advance tickets (until 5 pm show day):

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 seasons are hemisphere dependent.