Spring 2025 In Usa Time. 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. Seasons divide the year into four distinct periods of time named spring, summer, autumn/fall, and winter.

The first day of spring occurs on the spring equinox, which marks the astronomical beginning of spring. On this date, the day is equal.