Spring Equinox 2025 Northern Hemisphere Time. The spring season begins on the vernal equinox, or the march equinox which, according to the farmer's almanac, will fall on march 20 this year. During this time, the sun crosses the celestial equator (aka an imaginary line above earth’s equator), causing the.

The first day of spring 2025 is on thursday, march 20, 2025, at 5:01 a.m. 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.