Spring Equinox 2025 Dates Usa. Spring begins with the vernal equinox, thursday, march 20, 2025, 5:01 a.m. 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.
For those of us in the northern hemisphere, this is marked by the arrival of the spring equinox (otherwise known as the โfirst point of ariesโ). This date marks the spring equinox in the northern hemisphere.
