Winter Solstice Date 2024. Date and time the celestial milestone, which marks the shortest day and the longest night in the year, is being observed on saturday, december 21. The northern hemisphere winter solstice will occur saturday, december 21st at 4:20 am est.

The winter solstice is a celestial milestone, marking the shortest day and longest night of the year. It marks the sun’s lowest point in the sky, signifying the beginning of winter in.