Autumn Equinox 2024 Uk. When is the autumn equinox in 2024? Royal museums greenwich says the time of this year’s autumn equinox is 12.44pm gmt (1.44pm.
Normally, the autumn equinox falls between 22 and 24 september, and this year the equinox occurs on 22 september at 13:44 bst. Autumn equinox 2024 occurs sunday 22 september at 12:44pm (13:44 utc), as this is when the centre of the sun crosses the celestial equator.