Summer Solstice 2025 Canada Time. On the day of the autumn (september) equinox, the sun, moving along the ecliptic, crosses the celestial. Farmers often celebrate this day, as it signifies a time of abundance in crops and the peak of the agricultural year.

The winter solstice, the official start of winter, will occur at 4:21 p.m. Canada the exact moment of the summer solstice in 2025 is 20 june, at 22:42:02.