Giorno is an Italian-language national daily newspaper, based in Milan, Italy. Founded by the Italian businessman Cino Del Duca in 1956, with the journalist Gaetano Baldacci, to challenge Corriere della Sera, also a daily newspaper published in Milan. Later, because of a financial crisis, Italian public administrator Enrico Mattei with the state-owned oil company Eni bought part of the publishing company. In 1959, Del Duca sold his stake to Eni and Italo Pietra became the newspaper's new editor. Because of the 1973 oil crisis worldwide and the competition of la Repubblica – a new daily newspaper established in 1976 and published in Rome – it dropped many readers. In 1997, Eni sold the newspaper to the Italian publishing company Poligrafici Editoriale, which also owns two others Italian newspapers (il Resto del Carlino and La Nazione) under the Quotidiano Nazionale network.