Official Start Of Winter 2024 Calendar. Summer begins with the summer solstice, thursday, june 20, 2024, 4:51 p.m. Winter begins on saturday, december 21, 2024—also known as the winter solstice.
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, which marks the first day of winter 2024, occurs on saturday, december 21, 2024 at 4:21 a.m.