Spring Equinox Time In 2025. When is the first day of spring in 2025? 554 rows i put all of them into a spreadsheet and calculated the mid and third season boundaries.
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 page on variation in times of perihelion and.