When Does Spring Start 2025 Usage. 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 begins with the vernal equinox, tuesday, march 20, 2035, 3:02 p.m.

As the earth shifts its axis and the days grow longer, we eagerly. Summer begins with the summer solstice, thursday, june 21, 2035, 8:33 a.m.