John Calvin · Galileo Galilei Were John Calvin and Galileo Galilei alive at the same time? Yes. John Calvin and Galileo Galilei were alive at the same time for 0 years, from 1564 to 1564. John Calvin was 54 when Galileo Galilei was born.Galileo Galilei was under a year old when John Calvin died, aged 54. John CalvinFrench Protestant reformerBorn 10 July 1509 · died 27 May 1564, aged 54Galileo GalileiItalian polymathBorn 15 February 1564 · died 8 January 1642, aged 77 Leonardo da VinciMichelangeloMartin LutherJohn CalvinMiguel de CervantesGalileo GalileiWilliam ShakespeareRené DescartesMolière John Calvin and Galileo Galilei 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.