Martin Luther King, Jr. Day is a United States federal holiday marking the birthday of Rev. Dr. Martin Luther King, Jr. It is observed on the third Monday of January each year, which is around the time of King's birthday, January 15.
The national Martin Luther King Day of Service was started by former Pennsylvania U.S. Senator Harris Wofford and Atlanta Congressman John Lewis, who co-authored the King Holiday and Service Act. The federal legislation challenges Americans to transform the King Holiday into a day of citizen action volunteer service in honor of Dr. King. The federal legislation was signed into law by President Bill Clinton on August 23, 1994. Since 1996, the annual Greater Philadelphia King Day of Service has been the largest event in the nation honoring Dr. King.
Several other universities and organizations around the U.S., such as Arizona State University and Greater DC Cares, participate in the Dr. Martin Luther King, Jr. Day of Service. In honor of MLK, volunteers across the country donate their time to make a difference on this day.