Template:On this day - September 6

Juan Sebastián Elcano

• 1499 – Amerigo Vespucci and Alonso de Ojeda reach the Island of Bonaire, today Dutch Bonaire.
• 1522 – Juan Sebastián Elcano arrives at Sanlúcar de Barrameda (Cádiz) with a single ship, the Victoria, and eighteen survivors, after completing the first voyage around the world.
• 1564 – In North Africa, a force of Spanish soldiers under García Álvarez de Toledo, Viceroy of Sicily and of Catalonia, takes the Peñón de Vélez de la Gomera from the pirates.
• 1593 – In Korea, the Spanish priest Gregorio Céspedes becomes the first Westerner to land in that country, as the letters he sends to Spain attest.
• 1634 – During the Thirty Years' War, the Catholic Hispanic-Imperial army defeats the Protestant army of Sweden and Germany at the Battle of Nördlingen.
• 1724 – In Spain, Philip V returns to the throne after the death of his son Louis (who reigned only 229 days).
• 1757 – Birth of Pedro Cerviño, Argentine engineer and cartographer (d. 1816).
• 1806 – Birth of Juan Eugenio Hartzenbusch, Spanish writer (d. 1880).
• 1874 – In the Province of Oriente (Captaincy General of Cuba), during the Battle of San Antonio de Baja, the Spanish army traps the Cuban pro-independence officer Calixto García Íñiguez, who shoots himself in the mouth rather than surrender. The bullet, however, exits through his forehead, and he will end up spending four years as a prisoner in Spain.
• 1885 – Death of Narciso Monturiol, Spanish inventor and politician, inventor of the first crewed submarine with a combustion engine (b. 1819).
• 1906 – Birth of Luis Federico Leloir, Argentine researcher, Nobel Prize in Chemistry laureate in 1970 (d. 1987).
• 1930 – In Buenos Aires, General José Félix Uriburu overthrows the democratic President Hipólito Yrigoyen in the 1930 Argentine coup d'état.
• 1936 – During the Spanish Civil War, Francoist troops enter Irun, cutting off the Spanish Republic's access to the French border in the western zone.
• 1954 – In Manila (Philippines), representatives of Australia, the United States, the Philippines, France, New Zealand, Pakistan, the United Kingdom and Thailand sign the Treaty of the Southeast Asia Treaty Organization, as part of the Southeast Asia Collective Defense Treaty, against the communist powers of the USSR and China.
• 1979 – The Inter-American Commission on Human Rights arrives in Buenos Aires to investigate more than 30,000 cases of people disappeared in barely three years by the military junta of Jorge Rafael Videla.
• 1983 – In Chile, protests break out against the ten years of the regime of the Chilean dictator Augusto Pinochet Ugarte, leaving 11 dead, 25 wounded and 200 arrested.
• 1991 – In Morocco, the government agrees to a ceasefire with the Polisario Front.
• 2007 – Death of Pablo Sorozábal Serrano, Spanish translator, writer and composer (b. 1934).
• 2022 – Death of Magdalena Ruiz Guiñazú, Argentine translator, writer and broadcaster (b. 1931 or 1935).