Martin Luther King Day is celebrated each year on the third Monday in January celebrates the birth of Martin Luther King Jr. who was born January 15, 1929. King was a great man who stood up for society. He became the youngest person to win the Nobel Peace prize for his social activists work. On April 4, 1968 he was assassinated while making a speech on the balcony of his hotel room in Memphis Tennessee. His birth became a national Holiday when in 1983.