Fall Equinox 2024 Date And Time. Pacific daylight time) autumn begins astronomically in the northern hemisphere,. The equinox occurs at the exact same moment across the world.

Autumn equinox 2024 (beginning of astronomical autumn) on the day of the autumn (september) equinox, the sun, moving along the ecliptic, crosses the celestial equator, moving from the northern hemisphere to the southern. Autumn / fall equinox 2024.