Winter Solstice 2025 Date Usa 2025. At the winter solstice, we have the longest night and the shortest day of the year. Winter 2025 starts on sunday, december 21st in the northern hemisphere, with the first day of winter being the shortest daylight day of the year with the earth's axis having reached its furthest tilt away from the sun and.

Edt in america (sunday 22, 04.19. It marks the start of winter in some countries and calendars.