Pieter Zeeman · Adolf Hitler Were Pieter Zeeman and Adolf Hitler alive at the same time? Yes. Pieter Zeeman and Adolf Hitler were alive at the same time for 54 years, from 1889 to 1943. Pieter Zeeman was 23 when Adolf Hitler was born.Adolf Hitler was 54 when Pieter Zeeman died, aged 78. Pieter ZeemanDutch physicistBorn 25 May 1865 · died 9 October 1943, aged 78Adolf HitlerDictator of Germany from 1933 to 1945Born 20 April 1889 · died 30 April 1945, aged 56 Karl MarxPieter ZeemanMahatma GandhiVladimir LeninAlbert EinsteinAdolf HitlerRonald ReaganNelson Mandela Pieter Zeeman and Adolf Hitler in bold, with some of their best-known contemporaries. Drag across to see the age each reached in any year. Faded ends mark uncertain dates.