Winter Solstice: The Darkest Day of the Year
Ancient Origins and Modern Significance
The winter solstice is an astronomical event marking the shortest day and longest night of the year. According to the astronomical definition, it occurs when the Sun's declination reaches its southernmost point, signifying the beginning of winter.
Historical Roots
In the ancient Roman calendar, December 25 was originally the date of the winter solstice. In AD 274, Emperor Aurelian established the festival of Dies Natalis Solis Invicti (Birthday of the Unconquered Sun) on this date.
In 2023, the Northern Hemisphere's winter solstice will occur on December 21. Conversely, the Southern Hemisphere experiences its solstice on the opposite day.
Summer and Winter Solstices
In the Northern Hemisphere, the June solstice and December solstice are commonly referred to as the summer and winter solstices, respectively. The summer solstice has the longest day and shortest night, while the winter solstice experiences the reverse.
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