When Is Winter Solstice 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 is, as far as possible from the celestial equator to the south (for the northern hemisphere of the earth). So, what is the winter solstice, and why does it happen?

2025, 2026, 2027, 2028, 2029, 2030, 2031, 2032, 2033, 2034 and 2035. Sunday, dec 21 10:03 am est.