Dashed left edge = started before September 1980 ·
Dashed right edge = ongoing beyond September 1980
Events in September 1980 8
1896 – 1980Jean Piaget (1896-1980)Died 16 September 1980, aged 84Swiss psychologist whose theory of cognitive development transformed the understanding of how children think and learn. His stage-based model of intellectual growth remains foundational in developmental psychology and education. He founded the International Centre for Genetic Epistemology in Geneva.
1905 – 1980Jean-Paul SartreFrench philosopher and writerSartre was a leading existentialist thinker who explored freedom, responsibility, and human existence.
1925 – 1980Anastasio Somoza Debayle (1925-1980)Died 17 September 1980, aged 54Former President of Nicaragua and the last member of the Somoza family dynasty to rule the country, overthrown by the Sandinista revolution in 1979. He was assassinated in exile in Asuncion, Paraguay, by Argentine and Sandinista-linked guerrillas. His death closed the chapter on more than four decades of Somoza family rule.
1948 – 1980John Bonham (1948-1980)Died 25 September 1980, aged 32English drummer for the rock band Led Zeppelin, regarded as one of the most influential drummers in rock history for his power and technique. He died after a night of heavy drinking, choking in his sleep, prompting the band's dissolution soon after. His death is often cited alongside the "27 Club" despite his age of 32.
1980Bob Marley plays his last concertPittsburghHis final show, days after collapsing in New York.
1980Led Zeppelin's John Bonham diesAged 32The drummer dies at Jimmy Page's house during rehearsals.
1980Stevie Wonder releases Hotter than JulyHappy BirthdayIts song Happy Birthday drives his campaign for a Martin Luther King holiday.
1980 – presentMartina HingisThe Swiss MissFormer world No. 1 tennis player who won five Grand Slam singles titles.