25 historically significant individuals born on September 25. September 25 has been the birth date of several notable figures, such as Danish astronomer Ole Rømer (1644), who contributed to measuring the speed of light, and American author William Faulkner (1897), a recipient of both the Pulitzer Prize and Nobel Prize in Literature. On this date were also born leaders like Australian Prime Minister Billy Hughes (1862), Mexican President Plutarco Elías Calles (1877), and Italian President Sandro Pertini (1896).
Headline Figures

Thomas H. Morgan
1866 – 1945Nobel laureate: Nobel Prize in Physiology or Medicine (1933)

Plutarco Elías Calles
1877 – 1945Mexican general and politician who served as President from 1924 to 1928 and later as the powerful leader behind the Maximato period. He founded the National Revolutionary Party, which dominated Mexican politics for decades.

Ole Rømer
1644 – 1710Danish astronomer who made the first quantitative measurement of the speed of light in 1676 through observations of Jupiter's moon Io.
Birth Distribution by Century
20th Century
1019th Century
718th Century
417th Century
116th Century
115th Century
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