Winter Solstice 2024 Northern Hemisphere Dates. When do the four seasons start in 2024—for spring, summer, fall, and winter? Winter solstice, the two moments during the year when the path of the sun in the sky is farthest south in the northern hemisphere (december 21 or 22) and farthest north in the southern.

This year, the solstice happens at 4:21 a.m. In the northern hemisphere this date falls in december every year.