When Does Spring Begin In 2025. This year, astronomical spring began on 20 march 2022 and ended on 21 june 2022. Since the seasons vary in length, the start date of a new season can fall on different days each year.
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 equinox 2025 (beginning of astronomical spring) on the day of the spring (march) equinox, the sun crosses the celestial equator, moving along the ecliptic.