The temperature on December 11, 1877 was about -2.9 °C. The air pressure was 1 kgf/m2 and came mainly from the east-southeast. The airpressure was 76 cm mercury. The atmospheric humidity was 93%. Source: KNMI
From August 27, 1874 till November 3, 1877 the Netherlands had a cabinet Heemskerk - Van Lijnden van Sandenburg with the prime ministers Mr. J. Heemskerk Azn. (conservatief) and Mr. C.Th. baron Van Lijnden van Sandenburg (AR).
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.
May 9 » A magnitude 8.8 earthquake off the coast of Peru kills 2,541, including some as far away as Hawaii and Japan.
May 16 » The 16 May 1877 crisis occurs in France, ending with the dissolution of the National Assembly 22 June and affirming the interpretation of the Constitution of 1875 as a parliamentary rather than presidential system. The elections held in October 1877 led to the defeat of the royalists as a formal political movement in France.
July 9 » The inaugural Wimbledon Championships begins.
September 24 » The Battle of Shiroyama is a decisive victory of the Imperial Japanese Army over the Satsuma Rebellion.
November 24 » Anna Sewell's animal welfare novel Black Beauty is published.
December 6 » The first edition of The Washington Post is published.
Day of marriage August 21, 1901
The temperature on August 21, 1901 was between 12.5 °C and 20.6 °C and averaged 15.9 °C. There was 4.5 hours of sunshine (31%). Source: KNMI
March 2 » The U.S. Congress passes the Platt Amendment limiting the autonomy of Cuba, as a condition of the withdrawal of American troops.
April 25 » New York becomes the first U.S. state to require automobile license plates.
September 2 » Vice President of the United States Theodore Roosevelt utters the famous phrase, "Speak softly and carry a big stick" at the Minnesota State Fair.
September 14 » U.S. President William McKinley dies after being mortally wounded on September 6 by anarchist Leon Czolgosz and is succeeded by Vice President Theodore Roosevelt.
September 17 » Second Boer War: A Boer column defeats a British force at the Battle of Blood River Poort.
October 29 » Leon Czolgosz, the assassin of U.S. President William McKinley, is executed by electrocution.
Day of death October 18, 1970
The temperature on October 18, 1970 was between 1.2 °C and 16.1 °C and averaged 9.5 °C. There was 1.1 hours of sunshine (10%). The partly or heavily clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west-southwest. Source: KNMI
March 26 » South Vietnamese President Nguyễn Văn Thiệu implements a land reform program to solve the problem of land tenancy.
April 22 » The first Earth Day is celebrated.
July 8 » Richard Nixon delivers a special congressional message enunciating Native American self-determination as official US Indian policy, leading to the Indian Self-Determination and Education Assistance Act of 1975.
September 5 » Jochen Rindt becomes the only driver to posthumously win the Formula One World Drivers' Championship (in 1970), after being killed in practice for the Italian Grand Prix.
November 9 » Vietnam War: The Supreme Court of the United States votes 6–3 against hearing a case to allow Massachusetts to enforce its law granting residents the right to refuse military service in an undeclared war.
December 23 » The Democratic Republic of the Congo officially becomes a one-party state.
When copying data from this family tree, please include a reference to the origin: Elly Gelderman, "Family tree Gelderman", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-gelderman/I1007.php : accessed February 19, 2026), "Jacob Koopman (1877-1970)".
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