Discovery Day commemorates the discovery of the Sister Islands of Cayman Brac and Little Cayman by Christopher Columbus in 1503. The public holiday is celebrated on the third Monday in May. Colombia celebrates October 12 as "Discovery Day", coinciding with the Columbus Day celebrations of many other countries in the New World. March 6 marks the day in 1521 that Magellan's expedition dropped anchor in Umatac Bay. December 5, the date in 1492 when Christopher Columbus landed on the island of Hispaniola in what is now Môle-Saint-Nicolas, Haiti, is called Discovery Day. Today the island is shared by two countries: Haiti and
Columbus Day mainstream. Surveys conducted in 2013 and 2015 found 26% to 38% of American adults not in favor of celebrating Columbus Day. There are many interrelated strands of criticism. One refers primarily to the treatment of the indigenous populations during the European colonization of the Americas which followed Columbus's discovery. Some groups, such as the American Indian Movement, have argued that the ongoing actions and injustices against Native Americans are masked by Columbus myths and celebrations. American anthropologist Jack Weatherford says that on Columbus Day, Americans celebrate the greatest waves of genocide of the American Indians known in history. A second