Autumnal Equinox 2024 Schedule. List of solstice and equinox dates for the current and future years. Eastern daylight time (5:44 a.m.
Pacific daylight time) autumn begins astronomically in the northern hemisphere, and spring in. The autumnal equinox (in the northern hemisphere) takes place this afternoon (sunday 22nd september 2024) at 13.44 irish summer time (12.44 ut).