The 2025 winter solstice, which marks the official start of winter, occurs on Sunday, Dec. 21. Known as the shortest day of the year, the winter solstice is when the Northern Hemisphere is tilted ...
The winter solstice this year occurs on Dec. 21. The winter solstice marks the shortest day and longest night of the year. After Dec. 21, the hours of daylight will slowly increase until the summer ...