The Mayan calendar started being used.
Source
After parading around New York City, the Apollo 11 crew was awarded the Presidential Medal of Freedom.
South Park premiered on Comedy Central, with the first episode titled 'Cartman Gets an Anal Probe.'
John Smith, famous for setting up the first permanent English colony in the New World, told the first stories about Jamestown.
Saint John I became the Catholic Pope.
The Arica earthquake occurred in Peru and Ecuador.