Historically, the winter solstice has been of great importance to many cultures, such as Ancient Egypt and Ancient Rome, often as a marker for the passing seasons, and a possible time of rebirth.

The exact moment of the winter solstice varies from year to year due to a slight misalignment between the Gregorian calendar and the actual rate of the Earth’s rotation around the sun.

around June 21 (commonly known as "Summer Solstice" for being the first day of summer and the longest day of the year) and December 21 (commonly known as "Winter Solstice" for being the first day ...