2025 Spring Equinox Date And Time. An equinox is one of two days in the year when the sun crosses the equator and day and night become equal in length. Everything you need to know about the spring equinox 2025, including when it is, what it is and how it affects our planet.
Edt on march 19, 2025, the sun crosses the celestial equator from south to north. But why do we celebrate the spring equinox?