Definitions for "WINTER SOLSTICE"
Occurs around December 21st, it is the time of year when the sun is at its lowest point in the sky in the Northern Hemisphere. It marks the beginning of winter and it is when the sun passes directly over the Tropic of Capricorn, 23°S latitude.
The point on the ecliptic where the Sun is farthest south. The winter solstice, which is the shortest day of the year, occurs on, or near, December 21, and marks the first day of winter. See celestial sphere for a helpful diagram.
Time in the Northern Hemisphere when the sun is farthest south of the equator, December 21-22.