12/21/2025
Today is the first day of astronomical winter, as the winter solstice happens at 10:03 a.m. today (12/21). It's the shortest day and longest night of the year, with about 9 hours and 15 minutes of daylight.
Astronomical winter lasts until the spring equinox on Friday, March 20, 2026.
Meteorological winter started Dec. 1 and includes January and February.
However you mark the seasons, this is the turning point. The days start getting a little longer from here!