What Day Is The Fall Equinox 2024 In India. The autumnal equinox, or the first day of fall in the northern hemisphere takes place every year on september 22nd or september 23rd. Autumnal equinox — is an astronomical phenomenon, when the sun in its visible motion along the ecliptic crosses the celestial equator.

In other words, on the day of the. It also lists astronomical sunrise and sunset timings on vernal equinox.