The solstice season is a time of year when the days are either the shortest or longest, depending on the hemisphere. In the Northern Hemisphere, the winter solstice occurs around December 21st and marks the beginning of winter. In the Southern Hemisphere, the summer solstice occurs around June 21st and marks the beginning of summer. The term 'YULE' is an old Germanic word that is used to refer to the winter solstice season.