Dashed left edge = started before April 1977 ·
Dashed right edge = ongoing beyond April 1977
Events in April 1977 11
1897 – 1977Sepp Herberger (1897-1977)Died 28 April 1977, aged 80Sepp Herberger was the German football coach who led West Germany to victory in the 1954 World Cup, a result celebrated as the "Miracle of Bern." He managed the national team for nearly three decades.
1977Topper Headon joins The ClashDrummerThe classic line-up is complete.
1977Apple II launchedFirst mass-market personal computerApple launched the Apple II personal computer on April 1, 1977, one of the first highly successful mass-produced microcomputers. It came with a colour display, keyboard and BASIC programming language.
1977Commodore PET unveiledFirst all-in-one personal computerThe Commodore PET was demonstrated at the January 1977 Consumer Electronics Show, one of the first complete personal computers with built-in keyboard, monitor and cassette drive.
1977The Clash debut album releasedPunk rock arrivesThe Clash released their self-titled debut album on April 8, 1977, one of the defining albums of the punk rock movement alongside the Sex Pistols.
1977Seattle Mariners first gameNew MLB expansion team debutsThe Seattle Mariners played their first ever Major League Baseball game on April 6, 1977, as one of two new expansion franchises added that season.
1977Toronto Blue Jays first gameCanada gets a second MLB teamThe Toronto Blue Jays played their inaugural Major League Baseball game on April 7, 1977, becoming the first MLB team based outside the United States.
1977Space Shuttle first flight testEnterprise glides through California skiesThe Space Shuttle Enterprise made its first approach and landing test flight at Edwards Air Force Base on August 12, 1977, released from a Boeing 747 and gliding to a successful landing.
19771977 World Snooker ChampionshipFirst at the CrucibleThe first time the event was held at the Crucible Theatre. Winner: John Spencer; Runner-up: Cliff Thorburn. Score: 25–21.
1977 – presentSamantha CristoforettiAstronautESA astronaut and the first Italian woman in space; a symbol of modern Italian scientific excellence.
1977Studio 54 opensLegendary New York discotheque debutsStudio 54 opened its doors in New York City on April 26, 1977, becoming the world's most famous nightclub and the epicentre of the disco era. Its celebrity-studded guest lists and hedonistic atmosphere defined late 1970s New York culture.