January 21 is the 21st day of the year in the Gregorian calendar. It is often associated with the middle of winter in the Northern Hemisphere and summer in the Southern Hemisphere. This date can fall on different days of the week each year, affecting various events and activities. Several notable events have occurred on January 21 throughout history. For example, in 1793, King Louis XVI of France was executed by guillotine during the French Revolution. Additionally, January 21 is recognized as National Hugging Day in the United States, promoting the benefits of hugs for emotional well-being.