When Is Autumn Equinox 2025 Usa. Cdt) on september 22, 2025. Los angeles the exact moment of the autumnal equinox in 2025 is 22 september, at 11:19:18.

Here’s everything you should know about the fall equinox—plus our favorite fall facts, folklore, photos, and more! Los angeles the exact moment of the autumnal equinox in 2025 is 22 september, at 11:19:18.