The temperature on April 20, 1880 was about 18.0 °C. The air pressure was 5 kgf/m2 and came mainly from the west-southwest. The airpressure was 76 cm mercury. The atmospheric humidity was 62%. Source: KNMI
In The Netherlands , there was from August 20, 1879 to April 23, 1883 the cabinet Van Lijnden van Sandenburg, with Mr. C.Th. baron Van Lijnden van Sandenburg (conservatief-AR) as prime minister.
February 13 » Thomas Edison observes Thermionic emission.
June 7 » War of the Pacific: The Battle of Arica, the assault and capture of Morro de Arica (Arica Cape), ends the Campaña del Desierto (Desert Campaign).
June 28 » Australian bushranger Ned Kelly is captured at Glenrowan.
June 29 » France annexes Tahiti, renaming the independent Kingdom of Tahiti as "Etablissements de français de l'Océanie".
August 14 » Construction of Cologne Cathedral, the most famous landmark in Cologne, Germany, is completed.
November 11 » Australian bushranger Ned Kelly is hanged at Melbourne Gaol.
Day of marriage August 7, 1909
The temperature on August 7, 1909 was between 12.2 °C and 24.7 °C and averaged 18.9 °C. There was 11.7 hours of sunshine (77%). The average windspeed was 2 Bft (weak wind) and was prevailing from the north-northeast. Source: KNMI
February 12 » The National Association for the Advancement of Colored People (NAACP) is founded.
April 9 » The U.S. Congress passes the Payne–Aldrich Tariff Act.
April 13 » The military of the Ottoman Empire reverses the Ottoman countercoup of 1909 to force the overthrow of Sultan Abdul Hamid II.
September 30 » The Cunard Line's RMS Mauretania makes a record-breaking westbound crossing of the Atlantic, that will not be bettered for 20 years.
October 16 » William Howard Taft and Porfirio Díaz hold the first summit between a U.S. and a Mexican president. They narrowly escape assassination.
November 18 » Two United States warships are sent to Nicaragua after 500 revolutionaries (including two Americans) are executed by order of José Santos Zelaya.
Day of death September 20, 1914
The temperature on September 20, 1914 was between 5.8 °C and 14.7 °C and averaged 9.5 °C. There was 10.0 mm of rain. There was 2.0 hours of sunshine (16%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the northwest. Source: KNMI
In The Netherlands , there was from August 29, 1913 to September 9, 1918 the cabinet Cort van der Linden, with Mr. P.W.A. Cort van der Linden (liberaal) as prime minister.
April 24 » The Franck–Hertz experiment, a pillar of quantum mechanics, is presented to the German Physical Society.
August 5 » World War I: The German minelayer SSKönigin Luise lays a minefield about 40 miles (64km) off the Thames Estuary (Lowestoft). She is intercepted and sunk by the British light-cruiser HMSAmphion.
August 28 » World War I: The Royal Navy defeats the German fleet in the Battle of Heligoland Bight.
October 9 » World War I: The Siege of Antwerp comes to an end.
October 27 » First World War: The new British battleship HMS Audacious is sunk by a minefield laid by the armed German merchant-cruiser Berlin.
December 8 » World War I: A squadron of Britain's Royal Navy defeats the Imperial German East Asia Squadron in the Battle of the Falkland Islands in the South Atlantic.
When copying data from this family tree, please include a reference to the origin: J. Ham, "Family tree Ham", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-ham/I56735.php : accessed January 25, 2026), "Jan Slotboom (1880-1914)".
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