The temperature on April 9, 1860 was about 9.5 °C. There was 1 mm of rain. The air pressure was 7 kgf/m2 and came mainly from the west-northwest. The airpressure was 75 cm mercury. The atmospheric humidity was 64%. Source: KNMI
From March 18, 1858 till February 23, 1860 the Netherlands had a cabinet Rochussen - Van Bosse with the prime ministers J.J. Rochussen (conservatief-liberaal) and Mr. P.P. van Bosse (liberaal).
From February 23, 1860 till March 14, 1861 the Netherlands had a cabinet Van Hall - Van Heemstra with the prime ministers Mr. F.A. baron Van Hall (conservatief-liberaal) and Mr. S. baron Van Heemstra (liberaal).
February 27 » Abraham Lincoln makes a speech at Cooper Union in the city of New York that is largely responsible for his election to the Presidency.
May 18 » Abraham Lincoln wins the Republican Party presidential nomination over William H. Seward, who later becomes the United States Secretary of State.
May 27 » Giuseppe Garibaldi begins his attack on Palermo, Sicily, as part of the Italian unification.
June 23 » The United States Congress establishes the Government Printing Office.
September 21 » Second Opium War: An Anglo-French force defeats Chinese troops at the Battle of Palikao.
October 18 » The Second Opium War finally ends at the Convention of Peking with the ratification of the Treaty of Tientsin, an unequal treaty.
Day of marriage April 21, 1900
The temperature on April 21, 1900 was about 22.8 °C. The airpressure was 77 cm mercury. The atmospheric humidity was 46%. Source: KNMI
February 27 » The British Labour Party is founded.
May 24 » Second Boer War: The United Kingdom annexes the Orange Free State.
August 3 » The Firestone Tire and Rubber Company is founded.
September 13 » Filipino insurgents defeat a small American column in the Battle of Pulang Lupa, during the Philippine–American War.
October 19 » Max Planck discovers Planck's law of black-body radiation.
November 7 » The People's Party is founded in Cuba.
Day of death March 13, 1947
The temperature on March 13, 1947 was between -1.6 °C and 5.1 °C and averaged 2.8 °C. There was 13.5 mm of rain during 11.3 hours. The average windspeed was 4 Bft (moderate breeze) and was prevailing from the south-southeast. Source: KNMI
February 28 » February 28 Incident: In Taiwan, civil disorder is put down with the loss of an estimated 30,000 civilians.
July 8 » Reports are broadcast that a UFO crash landed in Roswell, New Mexico in what became known as the Roswell UFO incident.
July 26 » Cold War: U.S. President Harry S. Truman signs the National Security Act of 1947 into United States law creating the Central Intelligence Agency, United States Department of Defense, United States Air Force, Joint Chiefs of Staff, and the United States National Security Council.
November 17 » American scientists John Bardeen and Walter Houser Brattain observe the basic principles of the transistor, a key element for the electronics revolution of the 20th century.
November 25 » New Zealand ratifies the Statute of Westminster and thus becomes independent of legislative control by the United Kingdom.
December 23 » The transistor is first demonstrated at Bell Laboratories.
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/I9754.php : accessed February 18, 2026), "Jakob Berends de Roo (1860-1947)".
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