The temperature on April 24, 1911 was between 7.3 °C and 14.1 °C and averaged 10.4 °C. There was 10.1 hours of sunshine (70%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the west. Source: KNMI
January 5 » Kappa Alpha Psi, the world's third oldest and largest black fraternity, is founded at Indiana University.
April 8 » Dutch physicist Heike Kamerlingh Onnes discovers superconductivity.
April 29 » Tsinghua University, one of mainland China's leading universities, is founded.
July 4 » A massive heat wave strikes the northeastern United States, killing 380 people in eleven days and breaking temperature records in several cities.
August 1 » Harriet Quimby takes her pilot's test and becomes the first U.S. woman to earn an Aero Club of America aviator's certificate.
October 24 » Orville Wright remains in the air nine minutes and 45 seconds in a glider at Kill Devil Hills, North Carolina.
Day of marriage May 12, 1938
The temperature on May 12, 1938 was between 0.4 °C and 20.8 °C and averaged 12.6 °C. There was 12.9 hours of sunshine (83%). The average windspeed was 2 Bft (weak wind) and was prevailing from the south-southeast. Source: KNMI
April 30 » The animated cartoon short Porky's Hare Hunt debuts in movie theaters, introducing Happy Rabbit, an early version of Bugs Bunny.
June 7 » The Douglas DC-4E makes its first test flight.
June 23 » The Civil Aeronautics Act is signed into law, forming the Civil Aeronautics Authority in the United States.
October 31 » Great Depression: In an effort to restore investor confidence, the New York Stock Exchange unveils a fifteen-point program aimed to upgrade protection for the investing public.
December 13 » The Holocaust: The Neuengamme concentration camp opens in the Bergedorf district of Hamburg, Germany.
December 17 » Otto Hahn discovers the nuclear fission of the heavy element uranium, the scientific and technological basis of nuclear energy.
Day of death July 4, 1986
The temperature on July 4, 1986 was between 12.3 °C and 24.1 °C and averaged 19.5 °C. There was 8.2 hours of sunshine (49%). The partly clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west-southwest. Source: KNMI
In The Netherlands , there was from Thursday, November 4, 1982 to Monday, July 14, 1986 the cabinet Lubbers I, with Drs. R.F.M. Lubbers (CDA) as prime minister.
In The Netherlands , there was from Tuesday, November 4, 1986 to Tuesday, November 7, 1989 the cabinet Lubbers II, with Drs. R.F.M. Lubbers (CDA) as prime minister.
January 26 » The Ugandan government of Tito Okello is overthrown by the National Resistance Army, led by Yoweri Museveni.
June 4 » Jonathan Pollard pleads guilty to espionage for selling top secret United States military intelligence to Israel.
June 30 » The U.S. Supreme Court rules in Bowers v. Hardwick that states can outlaw homosexual acts between consenting adults.
August 31 » Aeroméxico Flight 498 collides with a Piper PA-28 Cherokee over Cerritos, California, killing 67 in the air and 15 on the ground.
September 7 » Desmond Tutu becomes the first black man to lead the Anglican Diocese of Cape Town.
November 21 » National Security Council member Oliver North and his secretary start to shred documents allegedly implicating them in the Iran–Contra affair.
When copying data from this family tree, please include a reference to the origin: Hans Weening, "Family tree Weening", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-weening/I167734.php : accessed October 19, 2026), "Marten de Vries (1911-1986)".
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