Spring Equinox 2025 Uk Date. This date marks the spring equinox in the northern hemisphere. Equinox means equal day and night (12 hours each).
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. The first day of spring in the uk astronomically occurs on the vernal equinox, 20 march 2025.