A Most Festive Island 
List of Festivals
The Commonwealth of Puerto Rico is one of two United States Comonwealth Territories. sponsor("Puerto Rico")
Constitution Day, July 25. Commemorates the anniversary of the day in 1952 when Puerto Rico became a commonwealth with the proclamation of their constitution. The United States had acquired the island after the Spanish-American war, and did not allow self-government until the 1950's, when their constitution was written. Also known as Commonwealth Day, or Occupation Day in commemoration of the US troops landing on the island on this day in 1898.
Barbosa Day, July 27. Celebrates the birthday of José Celso Barbosa (b.1857).
Birthday of Eugenio Maria de Hostos, January 11. Honors the Puerto Rican patriot and philosopher.
De Diego Day, April 16. Celebrates the birthday of patriot Joséde Diego (b.1867).
Muñoz Rivera Day, July 17. Celebrates the birthday of Luis Muñoz Rivera (1859-1916), patriot and jounalist.
Memorial Day, May 28.
Ponce de Leon Day, August 12. A festival dedicated to Ponce de Leon's arrival in 1508.
San Juan Day, June 24. Observance of Saint John's Day and commemoration of the Battle of San Juan, in which the Americans defeated the Spanish.
Emancipation Day, March 22. Anniversary of the abolition of slavery in this nation.
Discovery Day, November 19. Christopher Columbus discovered Puerto Rico on his second voyage to the west in 1493.
Public holidays New Year's Day, Epiphany, Birthday of Eugenio María de Hostos, Martin Luther King Day, Washington-Lincoln Day, Emancipation Day, Good Friday, De Diego Day, Memorial Day, St John's Day (Jun 24), US Independence Day, Muñoz Rivera Day, Constitution Day, Barbosa Day, Labor Day, Columbus Day, Veterans' Day, Discovery Day, US Thanksgiving Day, Christmas.