The temperature on September 7, 1895 was about 16.3 °C. There was 8 mm of rain. The airpressure was 76 cm mercury. The atmospheric humidity was 98%. Source: KNMI
May 7 » In Saint Petersburg, Russian scientist Alexander Stepanovich Popov demonstrates to the Russian Physical and Chemical Society his invention, the Popov lightning detector—a primitive radio receiver. In some parts of the former Soviet Union the anniversary of this day is celebrated as Radio Day.
October 4 » Horace Rawlins wins the first U.S. Open Men's Golf Championship.
October 8 » Korean Empress Myeongseong is assassinated by Japanese infiltrators.
October 21 » The Republic of Formosa collapses as Japanese forces invade.
November 5 » George B. Selden is granted the first U.S. patent for an automobile.
November 28 » The first American automobile race takes place over the 54 miles from Chicago's Jackson Park to Evanston, Illinois. Frank Duryea wins in approximately 10 hours.
Day of marriage July 26, 1917
The temperature on July 26, 1917 was between 10.8 °C and 21.7 °C and averaged 16.3 °C. There was 3.9 hours of sunshine (25%). The average windspeed was 2 Bft (weak wind) and was prevailing from the west-southwest. 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.
March 1 » The Zimmermann Telegram is reprinted in newspapers across the United States after the U.S. government releases its unencrypted text.
March 16 » World War I: A German auxiliary cruiser is sunk in the Action of 16 March 1917.
June 26 » World War I: The American Expeditionary Forces begin to arrive in France. They will first enter combat four months later.
July 20 » World War I: The Corfu Declaration, which leads to the creation of the post-war Kingdom of Yugoslavia, is signed by the Yugoslav Committee and Kingdom of Serbia.
October 15 » World War I: Dutch dancer Mata Hari is executed by France for espionage.
October 24 » First World War: Italy suffers a disastrous defeat on the Austro-Italian front.
Day of death June 29, 1970
The temperature on June 29, 1970 was between 10.9 °C and 17.3 °C and averaged 13.9 °C. There was 12.2 mm of rain during 3.5 hours. There was 1.4 hours of sunshine (8%). The heavily clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west-southwest. Source: KNMI
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/I6327.php : accessed February 3, 2026), "Dirk Haitsma (1895-1970)".
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