The International Astronomical Union named Pluto’s fourth and fifth moons Kerberos and Styx.
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A peace agreement was signed between King John of England and Prince Louis VIII of France, marking the end of the Siege of Roche-au-Moine, France.
The first Walmart store opened in Rogers, Arkansas.
Martin Luther was almost struck by lightning and became a monk.
'Harry Potter and the Chamber of Secrets,' the second book in the series, was published by Bloomsbury in the UK.
American aviator Amelia Earhart disappeared.