General Augusto César Sandino Day is observed in Nicaragua every February 21, honoring the revolutionary leader who opposed U.S. occupation in the early 20th century. Sandino, born Augusto Calderón, became a symbol of resistance against imperialism and nationalism after leading a guerrilla insurgency against U.S. troops and the Nicaraguan National Guard. His execution in 1934 by General Anastasio Somoza García marked a significant moment in Nicaraguan history, leading to the establishment of a dictatorial regime that lasted over four decades. The day was officially recognized as a national holiday in 2026, as part of an effort to expand the holiday calendar to commemorate important figures in Nicaraguan history. Celebrations typically involve public events and activities that reflect on Sandino's legacy and contributions to the country's struggle for sovereignty.