Spring Equinox 2025 Northern Hemisphere Location. The spring equinox, marking the official start of spring in the northern hemisphere, occurs when the sun crosses the celestial equator moving northward. We prepared a fun and.

On the day of the autumn (september) equinox, the sun, moving along the ecliptic, crosses the celestial equator, moving from the northern hemisphere to the southern. Earth’s tilt is now bringing spring and summer to the northern hemisphere.