January 2 » American statesman and diplomat John Hay announces the Open Door Policy to promote trade with China.
March 13 » British forces occupy Bloemfontein, Orange Free State, during the Second Boer War.
May 17 » The children's novel The Wonderful Wizard of Oz, by L. Frank Baum, is first published in the United States. The first copy is given to the author's sister.
June 5 » Second Boer War: British soldiers take Pretoria.
June 17 » Boxer Rebellion: Western Allied and Japanese forces capture the Taku Forts in Tianjin, China.
September 17 » Philippine–American War: Filipinos under Juan Cailles defeat Americans under Colonel Benjamin F. Cheatham Jr. at Mabitac.
Day of marriage May 3, 1926
The temperature on May 3, 1926 was between 4.7 °C and 15.5 °C and averaged 10.4 °C. There was 9.0 hours of sunshine (60%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the northeast. Source: KNMI
March 16 » History of Rocketry: Robert Goddard launches the first liquid-fueled rocket, at Auburn, Massachusetts.
May 22 » Chiang Kai-shek replaces the communists in Kuomintang China.
May 25 » Sholom Schwartzbard assassinates Symon Petliura, the head of the government of the Ukrainian People's Republic, which is in government-in-exile in Paris.
May 28 » The 28 May 1926 coup d'état: Ditadura Nacional is established in Portugal to suppress the unrest of the First Republic.
September 8 » Germany is admitted to the League of Nations.
September 25 » The international Convention to Suppress the Slave Trade and Slavery is first signed.
Day of death July 27, 1965
The temperature on July 27, 1965 was between 12.9 °C and 16.6 °C and averaged 14.2 °C. There was 7.5 mm of rain during 3.2 hours. There was 0.1 hours of sunshine (1%). The almost completely overcast 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: Nico de Kunder, "Family tree De Kunder", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-de-kunder/I2675.php : accessed December 30, 2025), "Maria Johanna Sibilla Josephina Derkx (1900-1965)".
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