Spring 2025 Date And Time 2025. Spring 2025 starts on tuesday, march 19th 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. But why do we celebrate the spring equinox?
The season change dates are based on the spring and fall equinoxes as well as the summer and winter solstices. On this date, the day is equal.