The Shortest Day In 2025. In the northern hemisphere, the shortest day of the year 2025 will occur on december 21. Here's why this day is the shortest day of the year, with the fewest hours of daylight.

The shortest day can occur on december 20, 21, 22, or 23. Winter solstice takes place on december 21, 2025, in the northern hemisphere and on june 21, 2025, in the southern hemisphere.