Battle of Santa Rosa Day in Costa Rica
Battle of Santa Rosa Day in Costa Rica is held on March 20. This event in the second decade of the month March is annual. 
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The Battle of Santa Rosa was a military confrontation that occurred on March 20, 1856 at Hacienda Santa Rosa, Guanacaste, Costa Rica, as part of the National Campaign of 1856-1857, and resulted in the expulsion of the filibuster army commanded by William Walker from Costa Rican territory.
She is commemorated every March 20 throughout the country. This victory was possible thanks to the fact that the nationals surprised the filibusters who were strategically hidden in the large house located in the Santa Rosa hacienda. The confrontation lasted only 18 minutes.
Similar holidays and events, festivals and interesting facts
Doce uvas on December 31 (the Spanish New Year's tradition of eating twelve grape varieties, one for each of the twelve clock strokes by midnight, subsequently spread in such Spanish-speaking countries as Mexico, Bolivia, Venezuela, Ecuador, El Salvador, Peru, Colombia, Puerto Rico, Nicaragua, Costa Rica et al);
Broadcaster's Day in Costa Rica on March 24
National Sports Day in Costa Rica on March 30 (Held on the last Sunday of March);
National Day of Fair Play in Sports in Costa Rica on April 10
Day of National Heroes in Costa Rica on April 11 (Día de Juan Santamaría);
Native American Day on April 19
Secretary's Day in Latin American countries on April 26