National holidays honor special events and important people in American history. Some holidays honor individuals. On Martin Luther King, Jr. Day, we honor a man who worked for equality for all Americans. Columbus Day commemorates the day Christopher Columbus arrived in the Americas. Some holidays honor groups of people. Memorial Day and Veterans Day honor people who served in the military and fought in wars. On Labor Day, we celebrate American workers. On Presidents' Day, we honor the work of American presidents. On Thanksgiving and Independence Day we remember important events in United States history. Christmas and New Year's Day are national holidays in the winter season. There are also other holidays during this time. These are the national U.S. holidays.