Equinox Fall 2024

Equinox Fall 2024. The autumnal (or fall) equinox is the halfway point between the summer and winter solstices. Learn what the autumnal equinox is, when it happens, and why it marks the start of fall in the northern hemisphere.

When is the first day of fall in 2024? The word equinox is latin for equal night, one of two days per year when the lengths of daylight and darkness are the same across the globe.