First Day Of Winter 2024 Date Uk. Ending on 28 (or 29 during a leap year) february. The first day of winter is marked by the winter solstice, which occurs when the earth’s axis tilts farthest from the sun.
Winter solstice takes place on december 21, 2024, in the northern hemisphere and on june 21, 2025, in the southern hemisphere. So mark your calendars, because autumn is officially over on.