On the day of the 2025 autumnal equinox, the sun rises almost exactly due east and sets to the west. The months that follow ...

The fall equinox marks the first day of autumn. When does fall officially begin in 2025? This visual guide will help get you oriented.

The reason why we don't see exactly equal daylight on the equinox is twofold. It has to do with how we measure daylight. We measure it by how long the sun's disk is above the horizon. It also has to ...