The Super Bowl is the annual championship game of the National Football League (NFL), the highest level of professional football in the United States. The game culminates a season that begins in the late summer of the previous calendar year. Normally, roman numerals are used to identify each game, rather than the year in which it is held. For example, Super Bowl I was played on January 15, 1967, following the 1966 regular season. The single exception to this rule is Super Bowl 50, which is scheduled to be played on February 7, 2016, following the 2015 regular season.