Winter Solstice 2024 Countdown Canada. 21, 2024, marking the first day of winter. The day has the shortest period of daylight and the longest night of the year.

When do the four seasons start in 2024—for spring, summer, fall, and winter? Regardless of its specific timing, it remains a time to gather, reflect, and look forward to the lengthening days that symbolize the return of warmth and growth.