Winter Equinox 2024 Uk Time. The summer solstice represents the longest day, and the winter solstice the shortest. In the northern hemisphere this date falls in december every year.

In 2024, the december solstice falls at 9:21 utc on december 21 (3:21 a.m. Autumnal/fall equinox north of the equator is mirrored south of the equator by the spring equinox.