The temperature on June 30, 1878 was about 20.6 °C. The air pressure was 1 kgf/m2 and came mainly from the south-southeast. The airpressure was 76 cm mercury. The atmospheric humidity was 71%. Source: KNMI
In The Netherlands , there was from November 3, 1877 to August 20, 1879 the cabinet Kappeijne van de Coppello, with Mr. J. Kappeijne van de Coppello (liberaal) as prime minister.
January 16 » Russo-Turkish War (1877–78): Battle of Philippopolis: Captain Aleksandr Burago with a squadron of Russian Imperial army dragoons liberates Plovdiv from Ottoman rule.
February 19 » Thomas Edison patents the phonograph.
June 4 » Cyprus Convention: The Ottoman Empire cedes Cyprus to the United Kingdom but retains nominal title.
September 1 » Emma Nutt becomes the world's first female telephone operator when she is recruited by Alexander Graham Bell to the Boston Telephone Dispatch Company.
October 15 » The Edison Electric Light Company begins operation.
November 17 » First assassination attempt against Umberto I of Italy by anarchist Giovanni Passannante, who was armed with a dagger. The King survived with a slight wound in an arm. Prime Minister Benedetto Cairoli blocked the aggressor, receiving an injury in a leg.
Day of marriage September 29, 1900
The temperature on September 29, 1900 was about 12.0 °C. The airpressure was 76 cm mercury. The atmospheric humidity was 97%. Source: KNMI
March 13 » British forces occupy Bloemfontein, Orange Free State, during the Second Boer War.
April 5 » Archaeologists in Knossos, Crete, discover a large cache of clay tablets with hieroglyphic writing in a script they call Linear B.
May 18 » The United Kingdom proclaims a protectorate over Tonga.
July 9 » The Governor of Shanxi province in North China orders the execution of 45 foreign Christian missionaries and local church members, including children.
August 3 » The Firestone Tire and Rubber Company is founded.
December 18 » The Upper Ferntree Gully to Gembrook, Victoria Narrow-gauge (2ft 6 in or 762mm) Railway (now the Puffing Billy Railway) in Victoria, Australia is opened for traffic.
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/I28504.php : accessed February 15, 2026), "Jan van der Sleen (1878-????)".
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