2025 Spring Equinox Date Time And Date. While the date for the vernal equinox. In 2025, the spring equinox, also known as the first day of spring, will occur on wednesday, march 20, at precisely 3:07 utc (coordinated universal time).

Although the autumnal equinox is observed, maybe even celebrated, all day on sept. 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.