There is a music band called Green Day.
21st Century Breakdown is the eighth studio album by American punk rock band Green Day . Dookie is the third studio album by American punk rock band Green Day , released on February 1 , 1994 , through Reprise Records . Green Day is an American punk rock band formed in 1986 by lead vocalist and guitarist Billie Joe Armstrong and bassist Mike Dirnt . The band 's eighth studio album , 21st Century Breakdown , was released in 2009 and achieved the band 's best chart performance to date .