National Sovereignty Day

🎉 🇦🇷 Argentina • November 17, 2026

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National Sovereignty Day — holiday, Argentina (November 17, 2026)

National Sovereignty Day Description

Commemorates the Battle of Vuelta de Obligado in 1845, when Argentine forces under General Lucio N. Mansilla resisted an Anglo-French naval blockade on the Paraná River. Though a tactical defeat, the battle is celebrated as a symbol of Argentine resistance to foreign intervention. Ceremonies are held at the battlefield site near San Pedro, Buenos Aires Province. Government offices and banks close. The holiday, reinstated as a national observance in 2010, emphasizes Argentina's long tradition of defending its territorial and economic sovereignty.