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 as an official state holiday, though many mark it as a "Day of Observance" or "Recognition" and at least four do not recognize it at all. Most states that celebrate Columbus Day will close state services, while others operate as normal. San Francisco claims the nation's oldest continuously existing celebration with the Italian-American community's annual Columbus Day Parade, which was established by Nicola Larco in 1868, while New York City boasts the largest, with over 35,000 marchers and one million viewers. As in the mainland United States, Columbus Day is a legal holiday in the U.S. territory of Puerto Rico.