First Day Of Winter 2024 Date And Time. The first day of winter is marked by the winter solstice, which occurs when the earth’s axis tilts farthest from the sun. 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 having reached its furthest tilt away from the sun and begins to change directiion back.

Spring begins with the vernal equinox, tuesday, march 19, 2024, 11:06 p.m. But daylight saving isn’t to blame;