What Day Is The Autumnal Equinox 2025. Find out more about equinoxes and solstices In the northern hemisphere, these are known as the spring, or vernal, equinox and the fall, or autumnal, equinox.

The fall equinox will be the first sunrise in months at the south pole. On this day, days and nights are approximately (but not exactly) equal in length for everyone across.