Spring Equinox 2025

Spring Equinox 2025. 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 spring equinox—aka the first day of spring—occurs on thursday, march 20, 2025.

Spring 2025 starts on thursday, march 20th in the northern hemisphere, with daylight time lengthening and the leaves begining show on the trees with the changing tilt of the earth’s axis. In 2025, the march equinox will occur on thursday, march 20, at 5:01 a.m.