WHAT ALL HAPPENED APRIL TO SEPTEMBER 1971
Find out what all happened April to September 1971

Sierra Leone becomes a republic, and Siaka Stevens the president. (19. April 1971)

The Australian Aboriginal Flag is flown for the first time. (12. July 1971)

Mars probe program: Mars 2 is launched by the Soviet Union. (19. May 1971)

An All Nippon Airways Boeing 727 and a Japanese Air Force F-86 collide over Morioka, Iwate, Japan killing 162. (30. July 1971)

The Parliament of the United Kingdom passes the Misuse of Drugs Act 1971 banning the medicinal use of cannabis. (28. September 1971)

Vietnam War: The New York Times begins publication of the Pentagon Papers. (13. June 1971)

A midair collision between a Hughes Airwest Douglas DC-9 jetliner and a United States Marine Corps McDonnell Douglas F-4 Phantom II jet fighter near Duarte, California, claims 50 lives. (6. June 1971)

The crew of the Soviet Soyuz 11 spacecraft are killed when their air supply escapes through a faulty valve. (30. June 1971)

Typhoon Nancy, with possibly the strongest winds ever measured in a tropical cyclone, makes landfall in Osaka, Japan, killing 173 people. (16. September 1971)

Apollo program: launch of Apollo 15 on the first Apollo "J-Mission", and first use of a Lunar Roving Vehicle. (26. July 1971)

Right to vote: the Twenty-sixth Amendment to the United States Constitution, lowering the voting age from 21 to 18 years, is formally certified by President Richard Nixon. (5. July 1971)

State police and National Guardsmen storm New York's Attica Prison to end a prison revolt. (13. September 1971)

The Dahlerau train disaster, the worst railway accident in West Germany, kills 46 people and injures 25 near Wuppertal. (27. May 1971)

President Richard Nixon announces his decision to increase the rate of American troop withdrawals from Vietnam. (7. April 1971)

Mariner program: Mariner 9 is launched to map 70% of the surface, and to study temporal changes in the atmosphere and surface, of Mars. (30. May 1971)

Launch of Salyut 1, the first space station. (19. April 1971)

The first Pacific Islands Forum (then known as the "South Pacific Forum") is held in Wellington, New Zealand, with the aim of enhancing cooperation between the independent countries of the Pacific Ocean. (5. August 1971)

Bangladesh Liberation War: The Pakistan Army massacre over 1,000 people in Keraniganj Upazila, Bangladesh. (1. April 1971)

A bomb exploded in the Liberal Party campaign rally in Plaza Miranda, Manila, Philippines with several anti-Marcos political candidates injured. (21. August 1971)

Vietnam War: Vietnam Veterans Against the War begin a five-day demonstration in Washington, D.C.. (19. April 1971)