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. The winter solstice, which marks the first day of winter 2024, occurs on saturday, december 21, 2024 at 4:21 a.m.

22 (only a few days before christmas) in the northern hemisphere, and on june 20 or june 21 in the southern hemisphere. The winter solstice marks the shortest day of the year when the north pole is tilted farthest away from the sun, and so the sun is at its lowest elevation in the sky.