Winter Solstice 2024 Meaning. In the northern hemisphere, the 2024 winter solstice will occur on december 21 at 09:20 gmt (december 21, 04:20 a.m. The winter solstice heralds the astronomical start of winter and marks the day with the fewest hours of daylight for the year.

Learn what causes this change in. 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.