The September equinox is the moment the Sun crosses the celestial equator —an imaginary line in the sky above Earth’s equator — …

The September equinox (or southward equinox) is the moment when the Sun appears to cross the celestial equator, heading …

5 days ago · At the September equinox, the sun is moving from north to south as it crosses above the equator. It’s bringing spring to …

13 hours ago · Fall officially begins tonight with the September equinox. Here’s the exact time it happens across every U.S. time zone …

4 days ago · Welcome, fall! The autumnal equinox—also called the September equinox or the fall equinox—arrives on Tuesday, …

The northward equinox occurs in March when the Sun crosses the equator from south to north, and the southward equinox occurs in …

19 hours ago · In the Northern Hemisphere, the September Equinox marks the start of autumn, so it's traditionally called the …

Astronomically, the September equinox is the autumnal, or fall, equinox marking the end of summer and the beginning of fall …

1 day ago · What the fall equinox actually means It's a specific moment in time every year in late September. Here's the science …

19 hours ago · The September equinox 2026 occurs on Sept. 22 as the sun crosses the celestial equator, marking the start of …