First Day Of Winter Day 2024. This year the winter will start on thursday december 21, 2023 (day of the winter solstice) and will end on tuesday march 19, 2024 with the spring equinox. The winter solstice heralds the astronomical start of winter and marks the day with the fewest hours of daylight for the year.

When do the four seasons start in 2024—for spring, summer, fall, and winter? 21, marked by the winter solstice, according to the old farmer’s almanac.