The temperature on December 29, 1869 was about -1.4 °C. There was 0.7 mm of rain. The air pressure was 5 kgf/m2 and came mainly from the southwest. The airpressure was 77 cm mercury. The atmospheric humidity was 92%. 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).
March 6 » Dmitri Mendeleev presents the first periodic table to the Russian Chemical Society.
April 6 » Celluloid is patented.
August 29 » The Mount Washington Cog Railway opens, making it the world's first mountain-climbing rack railway.
October 5 » The Hennepin Island tunnel collapses during construction, nearly destroying St. Anthony Falls.
November 11 » The Victorian Aboriginal Protection Act is enacted in Australia, giving the government control of indigenous people's wages, their terms of employment, where they could live, and of their children, effectively leading to the Stolen Generations.
November 17 » In Egypt, the Suez Canal, linking the Mediterranean Sea with the Red Sea, is inaugurated.
Day of death March 13, 1961
The temperature on March 13, 1961 was between 9.4 °C and 11.9 °C and averaged 10.1 °C. The almost completely overcast was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west. Source: KNMI
April 8 » A large explosion on board the MVDara in the Persian Gulf kills 238.
May 25 » Apollo program: U.S. President John F. Kennedy announces, before a special joint session of the U.S. Congress, his goal to initiate a project to put a "man on the Moon" before the end of the decade.
June 4 » Cold War: In the Vienna summit, the Soviet premier Nikita Khrushchev sparks the Berlin Crisis by threatening to sign a separate peace treaty with East Germany and ending American, British and French access to East Berlin.
August 11 » The former Portuguese territories in India of Dadra and Nagar Haveli are merged to create the Union Territory Dadra and Nagar Haveli.
October 30 » The Soviet Union detonates the Tsar Bomba, the most powerful explosive device ever detonated.
December 9 » Tanganyika becomes independent from Britain.
When copying data from this family tree, please include a reference to the origin: W. Rovers, "Family tree Ro(o)vers", database, Genealogy Online (https://www.genealogieonline.nl/stamboom_rovers/I33899.php : accessed February 17, 2026), "Petrus van de Ven (1869-1961)".
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