RTP1 (RTP um) is a Portuguese free-to-air television channel owned and operated by state-owned public broadcaster Rádio e Televisão de Portugal (RTP). It is the company's flagship television channel, and is known for broadcasting mainstream and generalist programming, including Telejornal news bulletins, prime time drama, cinema and entertainment, and major breaking news, sports and special events. It was launched on 7 March 1957 as the first regular television service in Portugal. It was the only one until 25 December 1968, when RTP launched a second channel. Two regional channels followed, RTP Madeira on 6 August 1972 and RTP Açores on 10 August 1975. As RTP held a monopoly on television broadcasting in the country, they were the only television channels until the first commercial television was launched on 6 October 1992, when SIC started broadcasting nationwide. The channel was initially simply referred to as "RTP". It received other names, such as "I Programa" and "RTP Canal 1" until it adopted its current name "RTP1". It is one of the most watched television networks in the country. The channel became a 24-hour service in 2002, although it now leases its graveyard slot (3:56 am to 5:59 am) to the infomercial producer and direct-response marketer, Galeria (owned by Galería del Coleccionista). Until that point, RTP1 closed down with the national anthem, but this practice stopped not too long before infomercials filled the overnight slots. Unlike RTP2, RTP1 broadcasts commercial advertising, which, along with the license fee, finances the channel. Source: Wikipedia (en)