Shortest Day Of The Year 2024 Sunset Time Santa Monica. Winter solstice takes place on december 21, 2024, in the northern hemisphere and on june 20, 2024, in the southern hemisphere. A december solstice on the 23rd is once in a hundred years.
The winter solstice marks the shortest day and longest night of the year, according to the national weather service. However, as you can see below the 21st is by far the most common.