Winter Solstice 2025 Date. The winter solstice 2025 is on sunday, december 21, 2025 (in 351 days). The winter solstice marks the year’s longest night and shortest day.
The winter solstice is the shortest day and longest night of the year after which the days begin to get longer and the nights get shorter. However, as you can see below the 21st is by far.