The temperature on July 13, 1890 was about 15.7 °C. The air pressure was 2 kgf/m2 and came mainly from the south-southwest. The airpressure was 76 cm mercury. The atmospheric humidity was 68%. Source: KNMI
April 7 » Completion of the first Lake Biwa Canal.
April 14 » The Pan-American Union is founded by the First International Conference of American States in Washington, D.C.
June 1 » The United States Census Bureau begins using Herman Hollerith's tabulating machine to count census returns.
July 1 » Canada and Bermuda are linked by telegraph cable.
July 26 » In Buenos Aires, Argentina the Revolución del Parque takes place, forcing President Miguel Ángel Juárez Celman's resignation.
September 24 » The Church of Jesus Christ of Latter-day Saints officially renounces polygamy.
Day of marriage December 7, 1916
The temperature on December 7, 1916 was between -0.5 °C and 2.0 °C and averaged 1.1 °C. There was 0.4 mm of rain. The average windspeed was 2 Bft (weak wind) and was prevailing from the north. Source: KNMI
In The Netherlands , there was from August 29, 1913 to September 9, 1918 the cabinet Cort van der Linden, with Mr. P.W.A. Cort van der Linden (liberaal) as prime minister.
April 8 » In Corona, California, race car driver Bob Burman crashes, killing three (including himself), and badly injuring five spectators.
May 10 » Sailing in the lifeboat James Caird, Ernest Shackleton arrives at South Georgia after a journey of 800 nautical miles from Elephant Island.
August 17 » World War I: Romania signs a secret treaty with the Entente Powers. According to the treaty, Romania agreed to join the war on the Allied side.
August 28 » World War I: Germany declares war on Romania.
September 15 » World War I: Tanks are used for the first time in battle, at the Battle of the Somme.
October 27 » Negus Mikael, marching on the Ethiopian capital in support of his son Emperor Iyasu V, is defeated by Fitawrari abte Giyorgis, securing the throne for Empress Zewditu I.
Day of death August 30, 1968
The temperature on August 30, 1968 was between 15.3 °C and 22.1 °C and averaged 18.2 °C. There was 0.5 hours of sunshine (4%). The almost completely overcast was. The average windspeed was 2 Bft (weak wind) and was prevailing from the north. Source: KNMI
March 6 » Three rebels are executed by Rhodesia, the first executions since UDI, prompting international condemnation.
March 21 » Battle of Karameh in Jordan between the Israel Defense Forces and the combined forces of the Jordanian Armed Forces and PLO.
April 3 » Martin Luther King Jr. delivers his "I've Been to the Mountaintop" speech. He was assassinated the next day.
May 25 » The Gateway Arch in St. Louis, Missouri, is dedicated.
June 11 » Lloyd J. Old identified the first cell surface antigens that could differentiate among different cell types.
December 13 » Brazilian President Artur da Costa e Silva issues AI-5 (Institutional Act No. 5), enabling government by decree and suspending habeas corpus.
When copying data from this family tree, please include a reference to the origin: Gert Jonker, "Family tree Jonker", database, Genealogy Online (https://www.genealogieonline.nl/jonker_stamboom/I22292.php : accessed February 19, 2026), "Aant Koonstra (1890-1968)".
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