It’s official. The Avengers is a monster. After earning a reported $18.7 million at midnight, Marvel’s long-awaited superhero mash-up posted an estimated $80.5 million on its opening day in 4,349 locations. That is second only to the $91 million of 2011’s Harry Potter and the Deathly Hallows Part 2. In terms of its three-day prospects, The Avengers is set to challenge the aforementioned boy wizard for first place in the All-Time weekend race. The number to beat there is $169.1 million – completely do-able for these critically-lauded superheroes considering they have 77% of America’s screens all to themselves. Meanwhile, Tony Stark and company have already taken in an enormous $304 million since opening internationally last week. That means that the Disney/Marvel release will likely pass $500 worldwide by the end of this weekend. And they said Joss Whedon was worried!