December 15: Hanukkah begins at sunset (Judaism, 2006); Zamenhof Day
- 1791 - The first ten amendments to the United States Constitution (pictured), collectively known as the United States Bill of Rights, were ratified.
- 1891 - James Naismith introduced the first version of basketball, with thirteen rules and nine players on each team.
- 1961 - Former Nazi leader Adolf Eichmann was sentenced to death after being found guilty on fifteen criminal charges, including war crimes and crimes against humanity.
- 1994 - The web browser Netscape Navigator 1.0 was first released.
- 1995 - The European Court of Justice handed down the Bosman ruling, allowing footballers in the European Union to freely transfer from one UEFA Federation to another at the end of their contracts.
Recent days: December 14 – December 13 – December 12
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