Who Was Alive

Were Henri Poincaré and Ronald Reagan alive at the same time?

Yes. Henri Poincaré and Ronald Reagan were alive at the same time for 1 years, from 1911 to 1912.

Henri Poincaré was 56 when Ronald Reagan was born.

Ronald Reagan was 1 when Henri Poincaré died, aged 58.

Henri Poincaré

French mathematician, physicist and engineer

Born 29 April 1854 · died 17 July 1912, aged 58

Ronald Reagan

President of the United States from 1981 to 1989 and actor

Born 6 February 1911 · died 5 June 2004, aged 93

  1. Abraham Lincoln
  2. Karl Marx
  3. Henri Poincaré
  4. Albert Einstein
  5. Adolf Hitler
  6. Ronald Reagan
  7. Donald Trump
  8. Michael Jackson
  9. Barack Obama
Henri Poincaré and Ronald Reagan 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.