First Day Of Winter 2025 Canada 2025. Winter solstice 2025 (beginning of astronomical winter) on the day of the winter (december) solstice, the sun passes through the southernmost point of the ecliptic, that. When do the four seasons start in 2025—for spring, summer, fall, and winter?

A solstice is the day when the sun is at its highest or lowest point in the sky. What are the 2025 frost dates?