9th » Douglas Engelbart gave what became known as "The Mother of All Demos", publicly debuting the Mouse (computer) named computer mouse, hypertext, and the bit-mapped graphical user interface using the NLS (computer system) named oN-Line System (NLS).
11th » 'The Rolling Stones Rock and Roll Circus', featuring the Rolling Stones, Jethro Tull (band) called Jethro Tull, the Who, Taj Mahal (musician) called Taj Mahal, Marianne Faithfull, and the Dirty Mac with Yoko Ono, is filmed in Wembley, London.
13th » Brazilian President of Brazil e.g President Artur da Costa e Silva issues AI-5 (Institutional Act No. 5), enabling government by decree and suspending habeas corpus.
20th » The Zodiac Killer kills Betty Lou Jenson and David Faraday in Vallejo, California.
21st » Apollo program: 'Apollo 8' is launched from the Kennedy Space Center, placing its crew on a Moon known as lunar trajectory for the first visit to another celestial body by humans.
23rd » The 82 sailors from the USS Pueblo AGER-2 6 are released after eleven months of internment in North Korea.
24th » Apollo program: The crew of 'Apollo 8' enters into orbit around the Moon, becoming the first humans to do so. They performed 10 lunar orbits and broadcast live TV pictures that became the famous Apollo 8 Genesis reading called Christmas Eve Broadcast, one
25th » Apollo program: 'Apollo 8' performs the very first successful Trans-Earth injection (TEI) maneuver, sending the crew and spacecraft on a trajectory back to Earth from Lunar orbit.
25th » Kilvenmani massacre, 44 Dalits (untouchables) burnt to death in Kizhavenmani village, Tamil Nadu, a retaliation for a campaign for higher wages by Dalit laborers.
27th » Apollo program: 'Apollo 8' splashes down in the Pacific Ocean, ending the first orbital manned mission to the Moon.