Shortest Day Of The Year 2024 Time Zone. Time and date winter solstice in the northern hemisphere (and summer solstice in the southern hemisphere) occurs on saturday, dec. Winter will officially begin in the northern hemisphere on saturday, december 21, 2024, when the winter solstice occurs.

Washington — the winter solstice, the official start of winter, is on saturday, dec. Winter will officially begin in the northern hemisphere on saturday, december 21, 2024, when the winter solstice occurs.