Winter Solstice 2025 Time. Winter solstice takes place on december 21, 2025, in the northern hemisphere and on june 20, 2025, in the southern hemisphere. The spring or vernal equinox marks the astronomical first day of spring.
21, 2025 and the next winter solstice for the southern hemisphere will occur on june 20, 2025. 21, in the northern hemisphere, according to.