When Does Spring Of 2025 Start. In the northern hemisphere, the astronomical start of spring is also known as the spring equinox. The 2025 spring equinox occurred at exactly 11:06 p.m.

In the northern hemisphere the dates of the meteorological spring extend from march 1 to may 31 (march, april an may). Astronomical spring begins on march 19, 2025 at 11:06 pm eastern daylight time, in the northern hemisphere,.