When Is Spring 2024 Start And End. The seasons are defined as spring (march, april, may), summer (june, july, august), autumn (september,.  — spring begins with the vernal equinox, tuesday, march 19, 2024, 11:06 p.m.

It also provides information on why winter is the shortest season, what defines each season, and when each of them starts in 2023.  — the spring equinox is tuesday, march 19 and brings the first day of astronomical spring to the northern hemisphere.