What Day Is The First Day Of Spring 2025 In America. 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. In 2025, the exact time of the start of spring is at 09:01 uct.

Online calendar of holidays and days off in united states for the spring of 2025. * the dates of spring given.