The temperature on May 29, 1911 was between 12.3 °C and 25.1 °C and averaged 19.0 °C. There was 13.6 hours of sunshine (83%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the east-northeast. Source: KNMI
January 18 » Eugene B. Ely lands on the deck of the USSPennsylvania anchored in San Francisco Bay, the first time an aircraft landed on a ship.
January 26 » Glenn Curtiss flies the first successful American seaplane.
January 29 » Mexican Revolution: Mexicali is captured by the Mexican Liberal Party, igniting the Magonista rebellion of 1911.
May 21 » President of Mexico Porfirio Díaz and the revolutionary Francisco Madero sign the Treaty of Ciudad Juárez to put an end to the fighting between the forces of both men, concluding the initial phase of the Mexican Revolution.
November 11 » Many cities in the Midwestern United States break their record highs and lows on the same day as a strong cold front rolls through.
December 14 » Roald Amundsen's team, comprising himself, Olav Bjaaland, Helmer Hanssen, Sverre Hassel, and Oscar Wisting, becomes the first to reach the South Pole.
Day of marriage May 20, 1937
The temperature on May 20, 1937 was between 12.2 °C and 22.5 °C and averaged 17.1 °C. There was 9.6 hours of sunshine (60%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the east. Source: KNMI
May 12 » The Duke and Duchess of York are crowned as King George VI and Queen Elizabeth of the United Kingdom of Great Britain and Northern Ireland in Westminster Abbey.
May 26 » Walter Reuther and members of the United Auto Workers (UAW) clashed with Ford Motor Company security guards at the River Rouge Complex complex in Dearborn, Michigan, during the Battle of the Overpass.
May 30 » Memorial Day massacre: Chicago police shoot and kill ten labor demonstrators.
July 7 » The Marco Polo Bridge Incident provides the Imperial Japanese Army with a pretext for starting the Second Sino-Japanese War.
August 24 » Spanish Civil War: Sovereign Council of Asturias and León is proclaimed in Gijón.
October 9 » Murder of 9 Catholic priests in Zhengding, China, who protected the local population from the advancing Japanese army.
Day of death January 20, 1967
The temperature on January 20, 1967 was between 2.5 °C and 7.4 °C and averaged 5.2 °C. There was 0.2 hours of sunshine (2%). The heavily clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the south east. Source: KNMI
July 24 » During an official state visit to Canada, French President Charles de Gaulle declares to a crowd of over 100,000 in Montreal: Vive le Québec libre! ("Long live free Quebec!"); the statement angered the Canadian government and many Anglophone Canadians.
August 13 » Two young women became the first fatal victims of grizzly bear attacks in the 57-year history of Montana's Glacier National Park in separate incidents.
September 1 » Six-Day War: The Khartoum Resolution is issued at the Arab Summit, and eight countries adopt the "three 'no's against Israel".
September 3 » Dagen H in Sweden: Traffic changes from driving on the left to driving on the right overnight.
October 27 » Catholic priest Philip Berrigan and others of the 'Baltimore Four' protest the Vietnam War by pouring blood on Selective Service records.
November 9 » The first issue of Rolling Stone magazine is published.
When copying data from this family tree, please include a reference to the origin: Jan Kaper, "Family tree Kaper", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-kaper/I55859.php : accessed March 6, 2026), "Luitjen Vedder (1911-1967)".
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