2025 Spring Equinox Date Time And Date. Arizona time on tuesday, march 19. This page provides date and time for vernal equinox in the year 2025 for phoenix, arizona, united states.

When is the 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.