First Day Of Spring 2025 Date And Time. 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. The case arose from a 2016 hush.
This year, the season begins on thursday, march 20, 2025. The first day of spring 2025 is on thursday, march 20, 2025 (in 69 days).