A National Holiday is a designated day when a country officially recognizes and celebrates a significant event, person, or cultural tradition. On this day, government offices, schools, and many businesses typically close, allowing citizens to participate in various festivities or observances. Examples of national holidays include Independence Day in the United States and Bastille Day in France. These holidays often commemorate historical events, such as the founding of a nation or the end of a war. They can also honor important figures, like Martin Luther King Jr. Day, which celebrates the civil rights leader's contributions to society.