Meaning Of Spring Equinox 2025 Calendar. The vernal equinox, also known as the spring equinox, occurs exactly at 11.06pm eastern time on tuesday 18 march 2025. Edt on tuesday, march 19.

The spring, or vernal, equinox occurs march 19 at 11:06 p.m. The vernal equinox, also known as the spring equinox, occurs exactly at 11.06pm eastern time on tuesday 18 march 2025.