President George Washington appointed Alexander Hamilton as the first Secretary of the US Treasury.
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Janet Parker became the last person to die of smallpox in Birmingham, United Kingdom.
The video game console Atari 2600 was released.
NASA revealed that water vapor was discovered in the atmosphere of an Earth-size planet, the exoplanet K2-18b.
The science-fiction movie 'The Martian,' starring Matt Damon, premiered in Toronto, Canada.
The popular children's book 'Five on a Treasure Island' featuring the 'Famous Five,' written by Enid Blyton, was published.
