The climax to the American football season is much more than just a sports event. It is a cultural juggernaut which mixes athleticism, politics, showbiz and obscene amounts of food and drink into an international event that often makes as many headlines for what happens when the players are off the field as when they step between the white lines.Here’s everything you need to know about Super Bowl LIII… When is the game?The 53rd annual instalment of the National Football League’s championship game will be played on Sunday.The New England Patriots (winners of the AFC) will face off against the Los Angeles Rams (winners of the NFC), with kick-off at 11.30pm UK time.Where will it be played? Mercedes-Benz Stadium in Atlanta, Georgia will host its first Super Bowl, having opened in 2017. It is one of the few NFL stadiums with a retractable roof.The $1.6bn (£1.2bn) arena can hold more than 70,000 fans and is the home of the Atlanta Falcons, who were on the end of a miraculous comeback from the Patriots in Super Bowl 51.The stadium replaced the now-demolished Georgia Dome, which hosted Super Bowls 28 (1994) and 34 (2000). Super Bowl LIII Get Sky Sports USA to…