This page lists historical and other events on March 20th in Catalonia and the Catalan-speaking countries as well as festivals and a list of births and deaths of well-known Catalans.
1179 - Sòria : The Treaty of Cazola is signed.
1829 - Torrevella: The earhquake of Torrevella.
1925 - Catalonia: Despite having promised the Lliga Regionalista that he wouldn't do it (in return for their support), Primo de Rivera dissolves the Mancomunitat de Catalunya.
1969 - Sabadell: Josep Garcia-Planas Cladellas, Catalan textile manufacturer.