Spring Equinox 2024 Date And Time Chart. The vernal equinox marks the. Spring will last from march 19 until.
An equinox is one of two days in the year when the sun crosses the equator and day and night become equal in length. The spring equinox (march 19, 2024) signals the start of spring in the northern hemisphere, the beginning of autumn in the southern hemisphere, and a rare moment of equal night across.