Primero de Mayo or Día del Trabajo or Día del Trabajador; a national holiday celebrated in most Spanish-speaking countries, equivalent to the U.S. Labor Day.
Cinco de Mayo (México). Commemorates de victory of Mexican forces over the French army at the Battle of Puebla on May 5, 1862. It is primarily a regional holiday celebrated in the Mexican state capital city of Puebla, and in other parts of Mexico. It is also celebrated in U.S. cities with a significant Mexican population. It is not, as many people think, Mexico’s Independece Day, which is actually September 16.
Dia de las Madres, or Day of the Mothers, observed on this date in Mexico and other Latin-American countries.
Independence Day for Paraguay.
Battle of Las Piedras (Paraguay). Anniversary of the end of the conflict between Uruguay and Brazil in 1828.
Cuba’s birth as an independent republic in 1902.
Independence Day for Argentina. It commemorates the establishment of an autonomous government resulting from the revolution on this day in 1810. Known in Argentina as Revolución de Mayo.