Robert E. Lee Day, also known as Lee’s Birthday, is observed primarily in southern U.S. states, such as Alabama and Mississippi, on the third Monday of January. This holiday commemorates the birth of Robert E. Lee, an American Confederate soldier born on January 19, 1807. Lee served as a commander of the Confederate States Army during the American Civil War and is recognized as one of the most distinguished military leaders of the 19th century, despite his opposition to racial equality. The day is marked by various observances, particularly in states where it is officially recognized, though in Florida, Lee’s actual birth date is a legal holiday but not widely celebrated. The holiday serves to honor Lee's legacy and contributions, reflecting on his role in American history.