First Day Of Winter 2024 Canada Map. The winter solstice, which marks the first day of winter 2024, occurs on saturday, december 21, 2024 at 4:21 a.m. — in 2024, the first day of winter is saturday, december 21.
The 2025 almanac predicts a winter with a “heart of cold,” forecasting big freezes and heavy. So, what is the winter solstice and why does it happen?