Equinox 2024 September. The autumnal equinox (in the northern hemisphere) takes place this afternoon (sunday 22nd september 2024) at 13.44 irish summer time (12.44 ut). The autumnal equinox brings fall to the northern hemisphere today as the sun passes directly over the equator at noon.
Autumn equinox 2024 (beginning of astronomical autumn) on the day of the autumn (september) equinox, the sun, moving along the ecliptic, crosses the celestial equator, moving from the. The autumnal equinox (in the northern hemisphere) takes place this afternoon (sunday 22nd september 2024) at 13.44 irish summer time (12.44 ut).