Official Start Of Winter 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 first day of winter (winter solstice or december solstice) is when the sun is in its most.

Bbc weather uses the meteorological calendar,. Thursday, mar 20 5:01 am edt.