First Day Winter 2024 Usa. The 2024 winter solstice — the precise moment when the sun appears farthest south in the sky — is at 4:20 a.m. Find out exactly when the winter season starts.
The first day of winter is marked by the winter solstice, which occurs when the earth’s axis tilts farthest from the sun. This year, the solstice happens at 4:21 a.m.