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
Christopher Columbus in Chicago, 1893, commemorated the 400th anniversary of the landing of Christopher Columbus in the Americas. Over 27 million people attended the exposition during its six-month duration. The United States Postal Service participated in the celebration issuing the first US "commemorative postage stamps, a series of 16 postage issues called the Columbian Issue depicting Columbus, Queen Isabella and others in the various stages of his several voyages. The issues range in value from the 1-cent to the 5-dollar denominations. Under Benjamin Harrison and his Postmaster General John Wanamaker the Columbian commemorative stamps were made available and were first issued at