Spring Solstice 2025 Calendar

Spring Solstice 2025 Calendar. On this date, the day is equal in length to the night. The times of the solstices mark the beginning of summer and winter.

When do the four seasons start in 2025—for spring, summer, fall, and winter? 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.