Winter Solstice is also called as hibernal solstice, is the longest night and shortest night of the year, which may occur around December 21 or 22 when the path of the Sun is lowest in the sky.  Winter Solstice may occur when either North Pole or South Pole of Earth reaches its maximum tilt or farthest away from the Sun, which can occur twice year in every hemisphere (Southern and Northern).

The winter solstice and summer solstice may happen during the hemisphere’s winter ans summer such as in the southern hemisphere, it is a simmer solstice may occur around on June 20 or 21 and in the Northern hemisphere, it is the Winter or December solstice may occur around on December 21 or 22. In several temperate regions, the winter solstice may occur in the midwinter or middle of winter is also called as winter solstice.

Winter Solstice also marks the first day or starting of the winter or also a astronomical event, which marks the longest night and shortest day of the year may occur around on December 21 or 22 across the world.