Winter Solstice will begin at 8:58 am MST on December 21.
It is the shortest day of the year in the Northern Hemisphere; the longest day of the year in the Southern.
It occurs when the sun’s zenith is at its farthest point south from the Equator, over the Tropic of Capricorn and the North Pole tilts away from the sun.
In Earth-based religions (Pagan Religions), Winter Solstice is the beginning of the Yule holiday. Yule is considered the turning point. It is when the days start getting longer and thoughts turn to sunshine and renewing life.
It is also called the Longest Night. Longest Night is recognized by many homeless advocacy groups. Check your local calendars for their evening events.