What Day Is Winter 2025. But although the northern hemisphere's winter solstice gets an entire day of recognition, it happens in an instant,. Solstices occur on 20 th or 21 st june and 21 st or 22 nd december each year.
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. 129 * local time for sydney, aus.