Winter Start Date 2024. Winter 2024 starts on saturday, december 21st in the northern hemisphere, with the first day of winter being the shortest daylight day of the year with the earth's axis. In 2024, the winter solstice date is saturday, december 21.
In 2024, the winter solstice date is saturday, december 21. This article explains the causes of the four seasons and how they are defined by astronomers and meteorologists.