The temperature on March 31, 1910 was between -1.6 °C and 7.8 °C and averaged 2.7 °C. There was 11.1 hours of sunshine (86%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the northeast. Source: KNMI
March 3 » Rockefeller Foundation: John D. Rockefeller Jr. announces his retirement from managing his businesses so that he can devote all his time to philanthropy.
March 8 » French aviator Raymonde de Laroche becomes the first woman to receive a pilot's license.
May 4 » The Royal Canadian Navy is created.
July 4 » The Johnson–Jeffries riots occur after African-American boxer Jack Johnson knocks out white boxer Jim Jeffries in the 15th round. Between 11 and 26 people are killed and hundreds more injured.
October 6 » Eleftherios Venizelos is elected prime minister of Greece for the first of seven times.
November 20 » Mexican Revolution: Francisco I. Madero issues the Plan de San Luis Potosí, denouncing Mexican President Porfirio Díaz, calling for a revolution to overthrow the government of Mexico, effectively starting the Mexican Revolution.
Day of marriage July 31, 1935
The temperature on July 31, 1935 was between 10.2 °C and 17.4 °C and averaged 13.6 °C. There was 0.2 mm of rain during 0.1 hours. There was 0.2 hours of sunshine (1%). The average windspeed was 2 Bft (weak wind) and was prevailing from the north-northwest. Source: KNMI
February 12 » USSMacon, one of the two largest helium-filled airships ever created, crashes into the Pacific Ocean off the coast of California and sinks.
April 8 » The Works Progress Administration is formed when the Emergency Relief Appropriation Act of 1935 becomes law.
June 11 » Inventor Edwin Armstrong gives the first public demonstration of FM broadcasting in the United States at Alpine, New Jersey.
July 28 » First flight of the Boeing B-17 Flying Fortress.
November 3 » George II of Greece regains his throne through a popular, though possibly fixed, plebiscite.
November 24 » The Senegalese Socialist Party holds its second congress.
Day of death August 7, 1967
The temperature on August 7, 1967 was between 9.8 °C and 23.7 °C and averaged 17.2 °C. There was 11.0 hours of sunshine (72%). The partly clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the east-southeast. Source: KNMI
January 27 » Apollo program: Astronauts Gus Grissom, Ed White and Roger Chaffee are killed in a fire during a test of their Apollo 1 spacecraft at the Kennedy Space Center, Florida.
April 28 » Vietnam War: Boxer Muhammad Ali refuses his induction into the United States Army and is subsequently stripped of his championship and license.
July 1 » Merger Treaty: The European Community is formally created out of a merger with the Common Market, the European Coal and Steel Community, and the European Atomic Energy Commission.
October 2 » Thurgood Marshall is sworn in as the first African-American justice of the United States Supreme Court.
October 8 » Guerrilla leader Che Guevara and his men are captured in Bolivia.
December 3 » At Groote Schuur Hospital in Cape Town, South Africa, a transplant team headed by Christiaan Barnard carries out the first heart transplant on a human (53-year-old Louis Washkansky).
When copying data from this family tree, please include a reference to the origin: Peter Keesman, "Family tree Keesman", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-keesman/I28035.php : accessed February 27, 2026), "Gerrit Johan Thomas (1910-1967)".
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