The temperature on December 26, 1870 was about -5.5 °C. The air pressure was 4 kgf/m2 and came mainly from the northeast. The airpressure was 76 cm mercury. The atmospheric humidity was 71%. 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).
January 3 » Construction work begins on the Brooklyn Bridge in New York, United States.
June 26 » The Christian holiday of Christmas is declared a federal holiday in the United States.
July 15 » Rupert's Land and the North-Western Territory are transferred to Canada from the Hudson's Bay Company, and the province of Manitoba and the Northwest Territories are established from these vast territories.
July 19 » Franco-Prussian War: France declares war on Prussia.
August 24 » The Wolseley expedition reaches Manitoba to end the Red River Rebellion.
September 3 » Franco-Prussian War: The Siege of Metz begins, resulting in a decisive Prussian victory on October 23.
Day of marriage April 20, 1898
The temperature on April 20, 1898 was about 10.2 °C. The airpressure was 76 cm mercury. The atmospheric humidity was 62%. Source: KNMI
February 7 » Dreyfus affair: Émile Zola is brought to trial for libel for publishing J'Accuse…!.
April 25 » Spanish–American War: The United States declares war on Spain.
June 11 » The Hundred Days' Reform, a planned movement to reform social, political, and educational institutions in China, is started by the Guangxu Emperor, but is suspended by Empress Dowager Cixi after 104 days. (The failed reform led to the abolition of the Imperial examination in 1905.)
August 13 » Spanish–American War: Spanish and American forces engage in a mock battle for Manila, after which the Spanish commander surrendered in order to keep the city out of Filipino rebel hands.
August 24 » Count Muravyov, Foreign Minister of Russia presents a rescript that convoked the First Hague Peace Conference.
August 25 » Seven hundred Greek civilians, 17 British guards and the British Consul of Crete are killed by a Turkish mob in Heraklion, Greece.
Day of death December 14, 1950
The temperature on December 14, 1950 was between -4.1 °C and 0.9 °C and averaged -0.7 °C. The average windspeed was 2 Bft (weak wind) and was prevailing from the east-southeast. Source: KNMI
From August 7, 1948 till March 15, 1951 the Netherlands had a cabinet Drees - Van Schaik with the prime ministers Dr. W. Drees (PvdA) and Mr. J.R.H. van Schaik (KVP).
June 27 » The United States decides to send troops to fight in the Korean War.
August 18 » Julien Lahaut, the chairman of the Communist Party of Belgium is assassinated by far-right elements.
August 20 » Korean War: United Nations repel an offensive by North Korean divisions attempting to cross the Nakdong River and assault the city of Taegu.
August 24 » Edith Sampson becomes the first black U.S. delegate to the United Nations.
November 17 » United Nations Security Council Resolution 89 relating to the Palestine Question is adopted.
December 17 » The F-86 Sabre's first mission over Korea.
When copying data from this family tree, please include a reference to the origin: Hendrik de Graaf, "Family tree Plugboer", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-plugboer/I4263.php : accessed March 7, 2026), "Jan Valkering (1870-1950)".
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