Astronomer Sir William Herschel discovered the first two moons of Uranus, Titania & Oberon.
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East Pakistan renamed itself Bangladesh after seceding from Pakistan.
Diego, a 100-year-old tortoise, was retired from a breeding program after fathering 800+ children.
Charing Cross Railway Station opened in London, England.
Samuel Morse sent the first telegraph message using Morse code across two miles of wire in New Jersey, USA.
The first successful administration of insulin to treat diabetes was given to 14-year-old Leonard Thompson.
