The first day of winter in the Northern Hemisphere is marked by the winter solstice, which occurs on Thursday, December 21, 2023, at 10:27 P.M. EST.
According to the Farmers Alamanac, the Winter Solstice is the astronomical moment the sun reaches the Tropic of Capricorn. In terms of daylight, it is the shortest day and the longest night of the year in the Northern Hemisphere. Winter Solstice marks the official start of Winter.
For more great information about Winter Solstice, visit The Farmers’ Almanac.