Spring Equinox 2025 Northern Hemisphere Dates

Spring Equinox 2025 Northern Hemisphere Dates. In the northern hemisphere, the astronomical start of spring, also known as the spring equinox, will occur on thursday, march 20, at 5:01 am edt in 2025. When do the four seasons start in 2025—for spring, summer, fall, and winter?

But if you live in the southern. 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.