Autumn Equinox 2024 Nz Time. On this day, days and nights are approximately ( but not exactly ) equal in length for everyone. In the northern hemisphere , the autumnal equinox takes place on september 22, 2024, at 12:44 gmt (08:44 a.m.

Cdt) on september 22, 2024. It can occur anytime between the 21st and the 24th of september, and this year it will be on the.