Winter Solstice 2024 Date Usa. In 2024, the december solstice falls at 9:21 utc on december 21 (3:21 a.m. The winter solstice marks the year’s longest night and shortest day.

This is when the winter solstice, or the shortest day of the year, occurs. Summer begins with the summer solstice, thursday, june 20, 2024, 4:51 p.m.