First Day Of Spring 2025 Date Usa. 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. This date marks the spring equinox in the northern hemisphere.

When in 2025 is spring? Here’s a list of the exact dates and times of the four seasons in north america, including the first days of winter, spring, summer, and fall for the next ten years.