1984 was a leap year.
January 1 - Brunei becomes an independent state.
January 10 - US and Vatican establish full diplomatic ties.
January 24 - Apple Macintosh is launched, the first consumer computer to have a graphical interface and a computer mouse instead of the then standard text interface.
February 7 - US cosmonaut Bruce McCandles becomes the first man to walk through space during the Challenger spacecraft mission using an astronaut maneuvering unit.
February 8 - The Winter Olympic Games open in Sarajevo.
February 13 - Konstantin Chernenko succeeds the late Yuri Andropov as Secretary General of the Communist Party of the Soviet Union.
February 26 - US troops leave Beirut.
March 6 - A year-long miners' strike begins in the United Kingdom.
April 4 - US President Ronald Reagan calls for an international ban on chemical weapons.
April 20 - Militia raids a private apartment in Belgrade while Milovan Djilas is speaking at the Open University. Militia arrests 28 people present. The next day, they were all released, but at the beginning of May, six were arrested: Miodrag Milić, Vladimir Mijanović, Pavluško Imširović, Milan Nikolić, Dragomir Olujić and Gordan Jovanović. Radomir Radović was soon found dead.
May 5 - Swedish group "Heriz" wins the Eurovision Song Contest.
May 8 - The Soviet Olympic Committee decides to boycott the Los Angeles Olympics, accusing the US government of violating the Olympic Charter.
May 15 - Veselin Đuranović elected President of the Presidency of the SFRY.
June 30 - John Turner becomes Canada's 17th prime minister.
July 28 - Los Angeles Summer Olympics open.
August 4 - The African Republic of Upper Volta changes its name to Burkina Faso.
August 11 - US President Ronald Reagan, while testing the sound for an interview on a radio station, said, "My dear Americans, I am pleased to tell you that I have signed a law today that will outlaw Russia. We will start bombing in five minutes. "
August 21 - A demonstration of 500,000 people in Manila �