Spring Equinox 2025 Usa

Spring Equinox 2025 Usa. An equinox is one of two days in the year when the sun crosses the equator and day and night become equal in length. When we spring forward in march, it's to add more daylight in the evenings.

When we spring forward in march, it’s to add more daylight in the evenings. The spring equinox, known as the vernal equinox in the northern hemisphere, is a day on which the sun sits directly over the equator, so day and night all over the world are of equal length.