An End and a Beginning
The fall equinox will occur on September 22, 2025, in the Northern Hemisphere, marking the official start of autumn. In the Northern Hemisphere, fall begins on September 22, 2025, at 18:20 GMT. In the Southern Hemisphere, the next fall equinox will arrive next year — on March 20, 2026. The autumnal equinox (as well as spring equinox) is the moment when neither of the Earth’s hemispheres is inclined towards or away from the Sun.
