The temperature on January 15, 1905 was between -7.0 °C and -1.1 °C and averaged -4.3 °C. There was 6.9 hours of sunshine (84%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the east-southeast. Source: KNMI
In The Netherlands , there was from August 1, 1901 to August 16, 1905 the cabinet Kuijper, with Dr. A. Kuijper (AR) as prime minister.
In The Netherlands , there was from August 17, 1905 to February 11, 1908 the cabinet De Meester, with Mr. Th. de Meester (unie-liberaal) as prime minister.
February 5 » In Mexico, the General Hospital of Mexico is inaugurated, started with four basic specialties.
April 17 » The Supreme Court of the United States decides Lochner v. New York, which holds that the "right to free contract" is implicit in the due process clause of the Fourteenth Amendment to the United States Constitution.
September 5 » Russo-Japanese War: In New Hampshire, United States, the Treaty of Portsmouth, mediated by U.S. President Theodore Roosevelt, ends the war.
November 18 » Prince Carl of Denmark becomes King Haakon VII of Norway.
November 25 » Prince Carl of Denmark arrives in Norway to become King Haakon VII of Norway.
November 28 » Irish nationalist Arthur Griffith founds Sinn Féin as a political party with the main aim of establishing a dual monarchy in Ireland.
Day of marriage May 25, 1935
The temperature on May 25, 1935 was between 10.6 °C and 19.6 °C and averaged 14.8 °C. There was 5.6 hours of sunshine (35%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the north-northeast. Source: KNMI
May 27 » New Deal: The Supreme Court of the United States declares the National Industrial Recovery Act to be unconstitutional in A.L.A. Schechter Poultry Corp. v. United States, (295 U.S. 495).
May 29 » First flight of the Messerschmitt Bf 109 fighter aeroplane.
June 10 » Dr. Robert Smith takes his last drink, and Alcoholics Anonymous is founded in Akron, Ohio, United States, by him and Bill Wilson.
June 11 » Inventor Edwin Armstrong gives the first public demonstration of FM broadcasting in the United States at Alpine, New Jersey.
June 12 » A ceasefire is negotiated between Bolivia and Paraguay, ending the Chaco War.
July 20 » Switzerland: A Royal Dutch Airlines plane en route from Milan to Frankfurt crashes into a Swiss mountain, killing thirteen.
Day of death September 15, 1960
The temperature on September 15, 1960 was between 13.5 °C and 16.8 °C and averaged 14.8 °C. There was 5.2 mm of rain during 2.2 hours. There was 0.4 hours of sunshine (3%). The heavily clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south-southeast. Source: KNMI
January 19 » Japan and the United States sign the US–Japan Mutual Security Treaty
May 13 » Hundreds of University of California, Berkeley students congregate for the first day of protest against a visit by the House Committee on Un-American Activities.
May 15 » The Soviet Union launches Sputnik 4.
July 20 » Ceylon (now Sri Lanka) elects Sirimavo Bandaranaike Prime Minister, the world's first elected female head of government.
July 28 » The German Volkswagen Act came into force.
September 14 » The Organization of Petroleum Exporting Countries (OPEC) is founded.
When copying data from this family tree, please include a reference to the origin: Joop Klavers, "Family tree Klavers", database, Genealogy Online (https://www.genealogieonline.nl/stamboom_klavers/I326552.php : accessed February 23, 2026), "Johannes Bernardus "Jan" Hemel (1905-1960)".
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