This Day In Rock History: April 20th
1971 Five friends at San Rafael High School in California coined the term "4:20" as a euphemism for smoking p.o.t. April 20th became a popular day to spark one up, as does 4:20pm. Fans of the Grateful Dead helped spread the phrase, the Boston song 'Smokin'' clocks in at 4 minutes, 20 seconds, and if you multiply the title numbers in Bob Dylan's 'Rainy Day Women #12 And #35,' you get 420.
1991 Steve Marriott leader of Small Faces and Humble Pie, died in a fire at his home in Essex. His work became a major influence for many 90s bands. Small Faces had the 1967 UK No.3 & US No.16 single 'Itchycoo Park', plus 1968 No.1 UK album 'Ogden's Nut Gone Flake', Humble Pie, 1969 UK No.4 single 'Natural Born Bugie'. As a child actor he played parts in Dixon of Dock Green and The Artful Dodger in Oliver.
1992 'A Concert For Life' took place at Wembley Stadium as a tribute to Queen singer Freddie Mercury and for aids awareness. Acts appearing included; Elton John, Roger Daltrey, Tony Iommi (Black Sabbath), David Bowie, Mick Ronson, James Hetfield, George Michael, Seal, Paul Young, Annie Lennox, Lisa Stansfield, Robert Plant, Joe Elliott and Phil Collen, Axl Rose and Slash.
source: thisdayinmusic