WWE SmackDown! is an American professional wrestling television program produced by WWE. It airs live every Friday at 8 p.m. Eastern Time (ET) on USA Network in the United States, and in most international markets on Netflix. The show debuted on UPN on April 29, 1999, and was formerly broadcast on Thursday nights. It moved to Friday nights on September 9, 2005, and began airing on The CW in September 2006. Fox Deportes simulcasts the program with Spanish-language commentary. It is considered to be one of WWE's two flagship programs.