First Day Of Spring 2025. Spring begins with the vernal equinox, thursday, march 20, 2025, 5:01 a.m. Spring is one of the four temperate seasons, the transition period between winter and summer.
In the northern hemisphere, the astronomical start of spring, also known as the spring equinox, will occur on thursday, march 20, at 5:01 am edt in 2025. Spring is one of the four temperate seasons, the transition period between winter and summer.