This page lists historical and other events on April 20th in Catalonia and the Catalan-speaking countries as well as festivals and a list of births and deaths of well-known Catalans.
1643 - les Bordes (la Vall d'Aran): The surrender of the fort Castell-lleó, under the control of Castilian troops (The Reapers' War).
1684 - Barcelona: After many years of trying, the printers of Barcelona are recognised as guild, but the following year an appeal by the Booksellers' Fraternity makes it disappear.
1897 - Barcelona: The Decret d'Agregació comes into force, and the municipalities of Gràcia, Sant Martí de Provençals, Sant Andreu de Palomar, Sant Gervasi de Cassoles, Sants and Les Corts become part of the City of Barcelona.
2015 - Barcelona: A boy kills a teacher and injures four pupils at IES Joan Fuster - Attack on IES Joan Fuster.
1824 - Barcelona: Francesc Pi i Margall, President of the First Spanish Republic and President of the Council of Ministers (died 1901).
1866 - Arenys de Mar, Province of Barcelona: beata Teresa Vives i Missé, nun from the congregation of the Adoratrius Esclaves del Santíssim Sagrament i de la Caritat, martyr (died 1936).
1890 - Sabadell: Gertrudis Artigas i Setó, textile theorist and teacher at the Escola Industrial.
1893 - Barcelona: Joan Miró i Ferrà, painter.
1957 - València: Alfred Hernando Hueso, known as Fredi, Valencian jai alai player and businessman.
1852 - Barcelona: Marcelino Andrés y Andrés, doctor and botanist (born 1807).
1912 - Dénia, Marina Alta: Roc Chabàs Llorens, Valencian cleric and historian (born 1844).
1995 - Madrid: Josep Capmany i Casamitjana, Auxiliary Bishop of Barcelona (born 1920).