Ratings
Big Brother 9 airs three episodes a week, with shows airing Sundays at 8 p.m. (EST), Tuesdays 9 p.m., and Wednesdays 8 p.m. The live eviction show was moved to Wednesdays due to Survivor: Micronesia airing Thursdays 8 p.m. This is the first season of Big Brother to air during an official television season, and the second to air concurrently with a season of Survivor. Big Brother 9 is also competing with Fox's American Idol on Wednesdays. The first episode of Big Brother 9 premiered on February 12, 2008 with 7.33 million viewers (4.6/7 viewing audience), down from last summer's 4.8/9 (7.4 million viewers) launch.
Read more about this topic: Big Brother 9 (U.S.)