This page lists historical and other events on February 23rd in Catalonia and the Catalan-speaking countries as well as festivals and a list of births and deaths of well-known Catalans.
1923 - Barcelona: Albert Einstein gives three talks about his Theory of Relativity to the Diputació.
1983 - Olesa de Montserrat (el Baix Llobregat): A fire destroys the Gran Teatre de la Passió.
1984 - Barcelona: The first issue of the magazine El Llamp appears.
1987 - Barcelona: The political party Iniciativa per Catalunya is founded.
2004 - Gregori López Raimundo, Maria Salvo Iborra and Agustí de Semir are invested as Doctors Honoris Causa by the Universitat Politècnica de Catalunya
1896 - la Vall d'Uixó, Plana Baixa: Honori Garcia i Garcia, Valencian notary, historian and publicist (died 1953).
1926 - València: Fernando Vizcaíno Casas, Valencian lawyer, writer and journalist (died 2003).
1900 - Reus: Lluís Quer i Cugat, writer and economist.
1919 - Barcelona: Joaquim Folguera i Poal, Catalan poet and literary critic (born 1893).
1926 - Barcelona: Joan Llimona i Bruguera, Catalan painter (born 1860).
1935 - Mallorca: Llorenç Bisbal, Mallorcan socialist leader (born 1876).
1938 - Genoa: Joan Costa i Deu, Catalan journalist and writer.
2008 - Barcelona (Barcelonès): Josep Palau i Fabre, Catalan writer, poet and art critic.
2016 - Barcelona (Barcelonès): Salvador Reguant i Serra, geologist, paleontologist and member of the Secció de Ciències i Tecnologia of the IEC.
2016 - Barcelona (Barcelonès): Joaquim Veà i Baró, Catalan scientific naturalist explorer and primatologist.