Winter Solstice 2024 Usa. The winter solstice in the northern hemisphere, or northern half of the earth, happens annually on december 21 or 22. The winter solstice marks the year’s longest night and shortest day.

It falls on december 21st or 22nd in the northern hemisphere and june 20th or 21st in the southern hemisphere. The winter solstice in the northern hemisphere, or northern half of the earth, happens annually on december 21 or 22.