When Is The 1st Day Of Spring 2025. The spring equinox is the celebration of the first day of spring. On the equinoxes the sun shines directly on the equator and the length of day and night is nearly.

By the meteorological calendar, spring will always start on 1 march; Spring 2025 starts on thursday, march 20th in the northern hemisphere, with daylight time lengthening and the leaves begining show on the trees with the changing tilt of the earth’s axis.