5 notable people died on September 23, including Charles K. Kao, Michel Ferdinand d'Albert d'Ailly, Antonín Strnad.
21st Century
1 death
Charles K. Kao
scientist
Nobel laureate: Nobel Prize in Physics (2009)
19th Century
2 deaths
Léon Talabot
engineerironmaster
French engineer and politician (1796-1863)
Louis-Joseph Papineau
essayistlawyer
Politician, lawyer, and the landlord of the seigneurie de la Petite-Nation
18th Century
2 deaths
Michel Ferdinand d'Albert d'Ailly
astronomermarshal
French astronomer (1714–1769)
Antonín Strnad
astrologerastronomer
Czech astronomer and meteorologist
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Births, events, and adjacent days.