December 14th observes Monkey Day and Bouillabaisse Day.
The European Union formally opened accession negotiations with Ukraine.
A British surgeon admitted to branding his initials on patients' livers.
A suicide bomber made an attack in Mogadishu, Somalia.
Amazon announced its first drone delivery.
Star Wars: The Force Awakens, directed by J.J. Abrams, had its world premiere at the TCL Chinese Theatre in Los Angeles.
The Dayton Agreement was signed in Paris by leaders of various governments. This ended the conflict in the former Yugoslavia.
Philadelphia premiered in Century City, California. It was one of the first mainstream films about AIDS, directed by Jonathan Demme.
At 2 PM EST, there was a 10 minute moment of silence in memory of John Lennon.
The Mariner 2 space probe completed the first-ever flyby of Venus.
After invading Finland, the Soviet Union was kicked out of the League of Nations.
A Norwegian expedition became the first to ever reach the geographical South Pole – led by Roald Amundsen.
Alabama became the 22nd state to join the United States of America.
Princess Mary Stuart succeeded her father James V and became Queen Mary I of Scotland at just six days old.
Northern Germany and the Netherlands were struck by St. Lucia's flood, killing more than 50,000 people.
The capital city of the Roman Empire, Constantinople, was severely damaged by an earthquake.