Green Day will kick things off when they play across Asia in March before hitting Russia and Europe in May.
Then in June, Green Day will team up with Weezer for two shows in Berlin and Milan, before all three bands meet up to play across Europe from mid-June, including dates in Glasgow, London, Huddersfield and Dublin.
July and August will see all three bands travel across North America, with further dates to be revealed in due course.
To mark the announcement, all three bands have release a single today: Green Day with Father Of All, Weezer with The End Of The Game and Fall Out Boy with Dear Future (Hands Up), which features a guest contribution with Wyclef Jean.
Green Day’s Billie Joe Armstrong has also revealed that the new track will be included on their upcoming studio album Father Of All Mothers****ers which is expected to be released in February – and he reports it’ll be the shortest album of their career.
He tells Zane Lowe on Apple Music’s Beats 1: “Well, we recorded an album and it’s called Father Of All Mothers****ers – its song title is also that.
“It's got a unicorn on the cover. It's rainbow, bright. It's got a horn and it's got funny eyes. Yeah, we made a new record and we're really excited. It's only 26 minutes long, so it's the shortest record we've made since Dookie or Insomniac.”
Armstrong reports the record will feature 10 tracks and says of the lead single: “Rock’n’roll sometimes has become so tame because people are... a lot of rock acts are always trying to look for the feel-good song of the year or something, everything gets really watered down and wimpy, and I think rock music should make you feel bad.”
As for the tone of the new Green Day album, Armstrong says: “There's a lot of depression, but with a sense of humour. But also just kind of the way the world works right now. I think we live in the time of complete and total chaos, or else we've always been, but now it's turned up to Trump.
“It’s just trying to reflect what's going on. It's not really writing political songs, but just writing about the shit that you see every day.
“American Idiot was the good old days. Remember when we just had two wars going on? Anyway, we live in the craziest of times right now.”
Weezer's track The End Of The Game will appear on their new album Van Weezer which is pencilled in for a spring 2020 release, while Fall Out Boy’s Dear Future (Hands Up) will be on their upcoming best of album.
Check out all the dates below.
Green Day, Weezer and Fall Out Boy: The Hella Mega Tour 2020
Jun 13: Paris La Defense Arena, France
Jun 14: Groningen Stadspark, Netherlands
Jun 17: Antwerp Sportspaleis, Belgium
Jun 21: Vienna Ernst Happel Stadium, Austria
Jun 24: Glasgow Bellahouston Park, UK
Jun 26: London Stadium, UK
Jun 27: Huddersfield The John Smith’s Stadium, UK
Jun 29: Dublin RDS Arena, Ireland
Jul 17: Seattle T-Mobile Park, WA
Jul 21: San Francisco Oracle Park, CA
Jul 24: San Diego Petco Park, CA
Jul 25: Los Angeles Dodger Stadium, CA
Jul 28: Commerce City DICK’s Sporting Goods Park, CO
Jul 31: Arlington Globe Life Field, TX
Aug 01: Houston Minute Maid Park, TX
Aug 05: Miami Hard Rock Stadium, FL
Aug 06: Jacksonville TIAA Bank Field, FL
Aug 08: Atlanta SunTrust Park, GA
Aug 11: Minneapolis Target Field, MN
Aug 13: Chicago Wrigley Field, IL
Aug 15: Pittsburgh PNC Park, PA
Aug 16: Hershey Hersheypark Stadium, PA
Aug 19: Detroit Comerica Park, MI
Aug 21: Washington Nationals Park, DC
Aug 22: New York Citi Field, NY
Aug 24: TorontovRogers Centre, ON
Aug 27: Boston Fenway Park, MA
Aug 29: Philadelphia Citizens Bank Park, PA