Nicaragua Holidays
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January 1 New Year's Day Many Nicaraguans celebrate New Year's Day at the pool.
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February 1 Air Force Day Held on 1 February in honor of the nation’s air force.
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April 13 Holy Thursday Celebrated nationally on the first Thursday of April.
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May 1 Labour Day Celebrated nationally on the first of May.
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May 27 Army Day Held on May 27 in honor of Nicaragua's army.
July 19 Liberation Day/FSLNRevolution DayCelebrated on 19 July on a national level. It marks the day that the National Liberation Army defeated the Somoza dictatorship in the Nicaraguan Revolution.
July 25 Fiesta de Santiago Celebrated on 25 July in Boaco, Somoto and Managua.
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July 26 Fiesta de Santa Ana Celebrated on 26 July in Nandaime, Niquinohomo, Moyogalpa and Ometepe.
August 1 Fiesta de Santo Domingo Managuans celebrate Santo Domingo de Guzmán (Patron saint) September 14Battle of San JacintoCelebrated on the national level. It is held on the anniversary of the Battle of San Jacinto (1856).
September 15 Independence Day A national holiday held on September 15 to celebrate Central America's declaration of independence in 1821.
October 12 Indigenous Resistance DayFormerly Columbus Day; Highlights the struggle of native peoples against European colonialism.
December 7/8 Immaculate Conception(La Griteria Immaculate) Celebrated nationally on December 8 and in León on December 7.
December 25 ChristmasCelebrated internationally.
December 31 New Year's Eve At 12am Nicaraguans celebrate with fireworks (Pólvoras, cohetes) and head to the beach.
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Source: https://en.wikipedia.org/wiki/Public_holidays_in_Nicaragua