Template:On this day - January 27

Henri Pittier

• 98 – Trajan succeeds, on his death, his adoptive father Nerva, his predecessor as emperor of the Roman Empire, becoming the first emperor of Hispanic origin.
• 1336 – Peter IV is proclaimed King of Aragon after the death of his father Alfonso IV.
• 1554 – Near Cádiz (Spain), Pedro de Heredia, founder of Cartagena de Indias (present-day Colombia), Spanish adelantado, navigator and explorer of the Caribbean and the Andes, is shipwrecked and dies.
• 1612 – Philip III grants the first privilege to hold bullfights in enclosed arenas, the origin of bullrings.
• 1822 – In Madrid (Spain), King Ferdinand VII declares the town of Santa Cruz de Tenerife capital of the Province of the Canaries.
• 1881 – Death of Manuel Orozco y Berra, Mexican historian, member of the Mexican Academy of Language (b. 1816).
• 1908 – In Buenos Aires (Argentina), President José Figueroa Alcorta orders the police to occupy the National Congress.
• 1917 – In San José (Costa Rica), General Federico Alberto Tinoco Granados overthrows President Alfredo González Flores.
• 1920 – Birth of Juan de Arespacochaga, Spanish engineer and politician, Mayor of Madrid from 1976 to 1978 (d. 1999).
• 1937 – In Mexico, during the agrarian reform undertaken by President Lázaro Cárdenas del Río, the so-called Assault on the Lands takes place in the Mexicali Municipality, a date that marks the beginning of the end of foreign latifundia on Mexican soil.
• 1950 – Death of Henri Pittier, Swiss engineer, geographer, painter, naturalist and botanist, who spent the most important part of his professional life in America (b. 1857).
• 1960 – Former president Juan Domingo Perón (in exile) leaves the Dominican Republic and moves to Spain.
• 1982 – In Honduras, the civilian Roberto Suazo Córdova takes office as president after a decade of military dictatorship.
• 1985 – Death of José Antonio Giménez-Arnau, Spanish diplomat, journalist and writer, head of press in the Nationalist zone during the Spanish Civil War (b. 1912).
• 1995 – Peru and Ecuador begin a war over a disputed 340 square kilometers of border. The fighting takes place at six posts on the border separating the two countries.
• 1999 – Death of Gonzalo Torrente Ballester, Spanish professor and man of letters (b. 1910).
• 2014 – The International Court of Justice in The Hague delivers its ruling on the maritime dispute between Peru and Chile, leaving 120 miles to Peru and 80 miles to Chile.
• 2019 – Death of Tulio Mora, Peruvian writer and poet, exponent of the so-called Generation of the 70s (Peru) and the most important theorist of the Hora Zero Movement (b. 1948).