First Day Of Spring 20243 2025 Calendar. The first day of spring is in 2025 on march 20 (according to the astronomical definition). The seasons are defined as spring (march, april, may), summer (june, july, august), autumn (september,.
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. The first day of spring 2025: