Many countries in the New World and elsewhere celebrate the anniversary of Christopher Columbus's arrival in the Americas, which occurred on October 12, 1492 in the Julian calendar and October 21, 1492 in the modern Gregorian calendar, as an official holiday. The day is celebrated as Columbus Day in the United States, as Día de la Raza (Day of the Race) in many countries in Latin America, as Día de las Culturas (Day of the Cultures) in Costa Rica, as Discovery Day in The Bahamas, as Día de la Hispanidad (Hispanic Day) and National Day in Spain, and as Día de la Resistencia Indígena (Day of Indigenous Resistance) in Venezuela. These holidays have been celebrated unofficially since the late 18th century, and officially in various countries since the early 20th century. 

Since 1971, the holiday has been commemorated in the U.S. on the second Monday in October, the same day as Thanksgiving in neighboring Canada. It is generally observed today by banks, the bond market, the U.S. Postal Service and other federal agencies, most state government offices, and many school districts; however, most businesses and stock exchanges remain open.