Spring Equinox 2025 Northern Hemisphere Calendar. The spring equinox, also known as the vernal equinox or march equinox, marks the beginning of spring in the northern hemisphere. The southern hemisphere experiences these dates before the september equinox and after.
The spring equinox, also known as the vernal equinox or march equinox, marks the beginning of spring in the northern hemisphere. What is the beginning of the astronomical seasons:
