Winter Solstice 2025. The dates given on this page are based on coordinated universal time (utc), which for practical purposes is equivalent to greenwich mean time (gmt). In most locations north of the equator, the shortest day of the year is around this date.
The winter solstice 2025 is on sunday, december 21, 2025 (in 351 days). In terms of daylight, this day is 3 hours, 12 minutes shorter than the june solstice.