What Is Winter Solstice 2024. The winter solstice marks the official start of the astronomical winter, as the sun reaches its most southerly point in the sky as seen from earth. The winter solstice arrives on december 21, 2024.
The first day of winter is marked by the winter solstice, which occurs when the earth’s axis tilts farthest from the sun. In the northern hemisphere, the winter solstice will occur on saturday, dec.