The winter solstice is an astronomical event that occurs annually on December 21 or 22, marking the shortest day and longest night of the year in the Northern Hemisphere. It is a significant event that has been celebrated for centuries by different cultures and religions around the world.
During the winter solstice, the tilt of the Earth's axis is at its maximum angle away from the sun, resulting in the shortest period of daylight and the longest night. The timing of the solstice varies slightly each year due to slight fluctuations in Earth's orbit. In contrast, the opposite occurs during the summer solstice, which marks the longest day and shortest night of the year.