The temperature on August 13, 1875 was about 20.4 °C. There was 0.2 mm of rain. The air pressure was 6 kgf/m2 and came mainly from the south-southwest. The airpressure was 76 cm mercury. The atmospheric humidity was 83%. 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).
February 25 » Guangxu Emperor of Qing dynasty China begins his reign, under Empress Dowager Cixi's regency.
May 20 » Signing of the Metre Convention by 17 nations leading to the establishment of the International System of Units.
June 19 » The Herzegovinian rebellion against the Ottoman Empire begins.
August 22 » The Treaty of Saint Petersburg between Japan and Russia is ratified, providing for the exchange of Sakhalin for the Kuril Islands.
August 25 » Captain Matthew Webb becomes the first person to swim across the English Channel, traveling from Dover, England, to Calais, France, in 21 hours and 45 minutes.
October 16 » Brigham Young University is founded in Provo, Utah.
Day of marriage May 2, 1901
The temperature on May 2, 1901 was between 2.2 °C and 17.7 °C and averaged 11.6 °C. There was 7.6 hours of sunshine (51%). Source: KNMI
January 1 » Nigeria becomes a British protectorate.
February 20 » The legislature of Hawaii Territory convenes for the first time.
August 10 » The U.S. Steel recognition strike by the Amalgamated Association of Iron and Steel Workers begins.
August 28 » Silliman University is founded in the Philippines. It is the first American private school in the country.
October 12 » President Theodore Roosevelt officially renames the "Executive Mansion" to the White House.
November 27 » The U.S. Army War College is established.
Day of death July 19, 1969
The temperature on July 19, 1969 was between 8.6 °C and 23.9 °C and averaged 17.8 °C. There was 0.1 mm of rain during 0.1 hours. There was 8.6 hours of sunshine (53%). The partly clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the southwest. Source: KNMI
July 20 » A cease fire is announced between Honduras and El Salvador, six days after the beginning of the "Football War".
August 4 » Vietnam War: At the apartment of French intermediary Jean Sainteny in Paris, American representative Henry Kissinger and North Vietnamese representative Xuân Thuỷ begin secret peace negotiations. The negotiations will eventually fail.
August 10 » A day after murdering Sharon Tate and four others, members of Charles Manson's cult kill Leno and Rosemary LaBianca.
October 21 » The 1969 Somali coup d'état establishes a Marxist–Leninist administration.
November 13 » Vietnam War: Anti-war protesters in Washington, D.C. stage a symbolic March Against Death.
November 17 » Cold War: Negotiators from the Soviet Union and the United States meet in Helsinki, Finland to begin SALT I negotiations aimed at limiting the number of strategic weapons on both sides.
When copying data from this family tree, please include a reference to the origin: Jaap van der Werff, "Family tree Van der Werff / Kooistra", database, Genealogy Online (https://www.genealogieonline.nl/van-der-werff-stamboom/I16.php : accessed March 11, 2026), "Johannes Janzn Kooistra (1875-1969)".
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