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By Associated Press

HBO's "Game of Thrones" lived up to the hype. This past weekend's season premiere stands as the most-watched one-day event in the history of the cable network that began in 1978.

The Nielsen company said 17.4 million people watched the Sunday opener to the show's final season, either live on the network at 9 p.m., streamed, through HBO's on-demand service or during two reruns that aired later that night. Nielsen can't account for people who watched more than once.

HBO's previous high-water mark was last season's finale of "Game of Thrones," making it likely that this new HBO record will be eclipsed when the series ends on May 19.

Nielsen said that 11.8 million people watched the season premiere traditionally, meaning when it first aired on the network at 9 p.m. ET.

The numbers are likely to keep going up; HBO estimates that 32.8 million people watched each episode of the show last season. That includes people who watched weeks after it first aired and repeat viewers.

Viewership for the show is more impressive when you consider that HBO is a service that people have to specifically pay for. It is available in around 35 million households in the United States, or roughly a third of the number of homes that can see CBS, NBC and ABC.