The temperature on August 16, 1870 was about 15.7 °C. The air pressure was 2 kgf/m2 and came mainly from the northwest. The airpressure was 76 cm mercury. The atmospheric humidity was 83%. Source: KNMI
From June 4, 1868 till January 4, 1871 the Netherlands had a cabinet Van Bosse - Fock with the prime ministers Mr. P.P. van Bosse (liberaal) and Mr. C. Fock (liberaal).
February 15 » Stevens Institute of Technology is founded in New Jersey, USA and offers the first Bachelor of Engineering degree in Mechanical Engineering.
February 25 » Hiram Rhodes Revels, a Republican from Mississippi, is sworn into the United States Senate, becoming the first African American ever to sit in Congress.
June 26 » The Christian holiday of Christmas is declared a federal holiday in the United States.
August 18 » Franco-Prussian War: Battle of Gravelotte is fought.
September 18 » Old Faithful Geyser is observed and named by Henry D. Washburn.
October 2 » A plebiscite held in Rome, supports annexation of city of Rome by the Kingdom of Italy.
Day of marriage May 12, 1900
The temperature on May 12, 1900 was about 7.8 °C. The airpressure was 76 cm mercury. The atmospheric humidity was 60%. Source: KNMI
April 2 » The United States Congress passes the Foraker Act, giving Puerto Rico limited self-rule.
May 17 » The children's novel The Wonderful Wizard of Oz, by L. Frank Baum, is first published in the United States. The first copy is given to the author's sister.
May 26 » Thousand Days' War: The Colombian Conservative Party turns the tide of war in their favor with victory against the Colombian Liberal Party in the Battle of Palonegro.
May 29 » N'Djamena is founded as Fort-Lamy by the French commander Émile Gentil.
June 25 » The Taoist monk Wang Yuanlu discovers the Dunhuang manuscripts, a cache of ancient texts that are of great historical and religious significance, in the Mogao Caves of Dunhuang, China.
December 14 » Quantum mechanics: Max Planck presents a theoretical derivation of his black-body radiation law.
Day of death March 15, 1947
The temperature on March 15, 1947 was between -3.9 °C and 2.4 °C and averaged -0.5 °C. There was 4.2 hours of sunshine (36%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south-southwest. Source: KNMI
February 23 » International Organization for Standardization is founded.
August 7 » Thor Heyerdahl's balsa wood raft, the Kon-Tiki, smashes into the reef at Raroia in the Tuamotu Islands after a 101-day, 7,000 kilometres (4,300mi) journey across the Pacific Ocean in an attempt to prove that pre-historic peoples could have traveled from South America.
August 14 » Pakistan gains Independence from the British Empire and joins the Commonwealth of Nations.
October 16 » The Philippines takes over the administration of the Turtle Islands and the Mangsee Islands from the United Kingdom.
November 29 » First Indochina War: French forces carry out a massacre at Mỹ Trạch, Vietnam.
December 17 » First flight of the Boeing B-47 Stratojet strategic bomber.
When copying data from this family tree, please include a reference to the origin: Hans Weening, "Family tree Weening", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-weening/I140755.php : accessed February 13, 2026), "Hendrik Kladder (1870-1947)".
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