📜 This Day in History
July 23
- 1319A fleet led by the Knights Hospitaller sank 22 of 28 ships of the Turkish Aydinid emirate.
- 1921The first National Congress of the Chinese Communist Party opened in a house in Shanghai.
1942The Holocaust: The gas chambers at Treblinka extermination camp began operation, killing 6,500 Jews who had been transported from the Warsaw Ghetto the day before.- 1968A shootout between police and a Black power group began in Cleveland, Ohio, sparking three days of rioting.
- 1995Hale–Bopp, one of the most widely observed comets of the 20th century, was independently discovered by astronomers Alan Hale and Thomas Bopp.
- 2010The English-Irish boy band One Direction were formed while auditioning for the 2010 series of the British singing competition The X Factor.
