Columbus Day, also called Indigenous Peoples’ Day, in the United States, holiday (originally October 12; since 1971 the second Monday in October) to commemorate the landing of Christopher Columbus on October 12, 1492, in the New World. Columbus Day is celebrated on Monday, October 10, 2022.Columbus Day, also called Indigenous Peoples’ Day, in the United States, holiday (originally October 12; since 1971 the second Monday in October) to commemorate the landing of Christopher Columbus on October 12, 1492, in the New World. Columbus Day is celebrated on Monday, October 10, 2022.Columbus Day, also called Indigenous Peoples’ Day, in the United States, holiday (originally October 12; since 1971 the second Monday in October) to commemorate the landing of Christopher Columbus on October 12, 1492, in the New World. Columbus Day is celebrated on Monday, October 10, 2022.