On This Day

Events in History in April 1973

  • Apr 1 Japan allows its citizens to own gold
  • Apr 1 OPEC increases price of petroleum by 5.7 percent
  • Apr 2 ITT admits to asking CIA to influence Chilean presidential election
  • Apr 2 Launch of the LexisNexis computerized legal research service.
  • Apr 3 1st mobile phone call is made in downtown Manhattan, NYC by Motorola employee Martin Cooper to the Bell Labs headquarters in New Jersey
  • Apr 4 World Trade Center, then the world's tallest building, opens in New York (110 stories). Later destroyed in 9/11 terrorist attacks.
  • Apr 5 Pioneer 11 launched to Jupiter
  • Apr 6 Dock strike in Gent/Antwerp, Belgium
  • Apr 6 Indian troops invade Sikkim
  • Apr 6 America launches the Pioneer 11 (Pioneer G) probe to study Jupiter & Saturn
  • Apr 7 Cleveland sets day-game & opening-game attendance records of 74,420
  • Apr 8 Thirty-two terrorist bombings in Cyprus
  • Apr 9 Netherlands recognizes North Vietnam
  • Apr 9 Otto Kerner, former governor of Illinois, convicted for his role in an illegal racetrack scheme
  • Apr 10 BEA flight to Basel Switzerland, crashes on landing, killing 104 of 143
  • Apr 10 Pakistan suspends constitution
  • Apr 12 France recognizes North Vietnam
  • Apr 12 Sudan adopts constitution
  • Apr 12 Swaziland suspends constitution
  • Apr 14 Acting FBI director L Patrick Gray resigns after admitting he destroyed evidence in the Watergate scandal
  • Apr 17 German counter-terrorist unit GSG 9 founded.

Event of interestEvent of Interest

Apr 18 US Government ends Mandatory Oil Import Program, established in 1959 by President Eisenhower

34th US President & WWII General Dwight D. Eisenhower
34th US President & WWII General
Dwight D. Eisenhower
  • Apr 19 USSR performs nuclear test at Eastern Kazakh/Semipalitinsk USSR
  • Apr 20 Mass murderer Ed Kemper attempts to dispose of his mother's vocal chords in a domestic waste disposal unit
  • Apr 20 Canadian ANIK A2 becomes 1st commercial satellite in orbit
  • Apr 25 US performs nuclear test at Nevada Test Site
  • Apr 26 US performs nuclear test at Nevada Test Site
  • Apr 28 Over 6000 Mk. 82 500 pound bombs detonate over 18 hrs in a railyard in northern California. 5500 structures damaged, town of Antelope destroyed, with every building reduced to foundations. Leads to Transportation Safety Act (1974)
  • Apr 30 US President Nixon announces the resignation of H. R. Haldeman, Ehrlichman and others