Winter Solstice 2024 Southern Hemisphere Dates. 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. Six months later, the south pole is angled away from the sun by about 23.4°.

December 21, 2024 at 1:20 am pst. Six months later, the south pole is angled away from the sun by about 23.4°.