Autumn equionox

This image, captured on 23 September 2024, shows the autumn equinox as seen from the Meteosat Third Generation geostationary weather satellite orbiting 36 000 km above Earth.

In the northern hemisphere, equinoxes occur twice a year: around 22 September (autumn equinox) and 20 March (spring equinox).

The autumn equinox signifies the end of summer and the beginning of autumn, when nights grow longer than days.