January 2 » American statesman and diplomat John Hay announces the Open Door Policy to promote trade with China.
February 27 » Second Boer War: In South Africa, British military leaders receive an unconditional notice of surrender from Boer General Piet Cronjé at the Battle of Paardeberg.
April 14 » The Exposition Universelle begins.
May 23 » American Civil War: Sergeant William Harvey Carney is awarded the Medal of Honor for his heroism in the Assault on the Battery Wagner in 1863.
July 9 » The Governor of Shanxi province in North China orders the execution of 45 foreign Christian missionaries and local church members, including children.
October 19 » Max Planck discovers Planck's law of black-body radiation.
Day of marriage June 21, 1919
The temperature on June 21, 1919 was between 9.6 °C and 16.2 °C and averaged 13.7 °C. There was 2.9 mm of rain. There was 4.4 hours of sunshine (26%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the west. Source: KNMI
In The Netherlands , there was from September 9, 1918 to September 18, 1922 the cabinet Ruys de Beerenbrouck I, with Jonkheer mr. Ch.J.M. Ruys de Beerenbrouck (RKSP) as prime minister.
January 15 » Rosa Luxemburg and Karl Liebknecht, two of the most prominent socialists in Germany, are tortured and murdered by the Freikorps at the end of the Spartacist uprising.
January 22 » Act Zluky is signed, unifying the Ukrainian People's Republic and the West Ukrainian National Republic.
April 16 » Mohandas Gandhi organizes a day of "prayer and fasting" in response to the killing of Indian protesters in the Jallianwala Bagh massacre by the British colonial troops three days earlier.
September 28 » Race riots begin in Omaha, Nebraska.
December 17 » Uruguay becomes a signatory to the Buenos Aires copyright treaty.
December 26 » Babe Ruth of the Boston Red Sox is sold to the New York Yankees by owner Harry Frazee, allegedly establishing the Curse of the Bambino superstition.
Day of death May 1, 1941
The temperature on May 1, 1941 was between 8.0 °C and 12.0 °C and averaged 10.0 °C. There was 1.3 mm of rain during 3.1 hours. There was 0.1 hours of sunshine (1%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the northeast. Source: KNMI
In The Netherlands , there was from September 3, 1940 to July 27, 1941 the cabinet Gerbrandy I, with Prof. dr. P.S. Gerbrandy (ARP) as prime minister.
In The Netherlands , there was from July 27, 1941 to February 23, 1945 the cabinet Gerbrandy II, with Prof. dr. P.S. Gerbrandy (ARP) as prime minister.
January 6 » United States President Franklin D. Roosevelt delivers his Four Freedoms speech in the State of the Union address.
March 11 » World War II: United States President Franklin D. Roosevelt signs the Lend-Lease Act into law, allowing American-built war supplies to be shipped to the Allies on loan.
May 9 » World War II: The German submarine U-110 is captured by the Royal Navy. On board is the latest Enigma machine which Allied cryptographers later use to break coded German messages.
June 5 » World War II: Four thousand Chongqing residents are asphyxiated in a bomb shelter during the Bombing of Chongqing.
September 4 » World War II: A German submarine makes the first attack of the war against a United States warship, the USSGreer.
December 9 » World War II: The American 19th Bombardment Group attacks Japanese ships off the coast of Vigan, Luzon.
When copying data from this family tree, please include a reference to the origin: Joop Klavers, "Family tree Klavers", database, Genealogy Online (https://www.genealogieonline.nl/stamboom_klavers/I94397.php : accessed March 11, 2026), "Aaltje Nieweg (1900-1941)".
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