Winter Equinox 2024 Date. An equinox is one of two days in the year when the sun crosses the equator and day and night become equal in length. The 2024 december solstice takes place on december 21, at 9:21 utc.
Normally, the autumn equinox falls between 22 and 24 september, and this year the equinox occurs on 22 september at 13:44 bst. Meteorological seasons consist of splitting.