April 30 » J. J. Thomson of the Cavendish Laboratory announces his discovery of the electron as a subatomic particle, over 1,800 times smaller than a proton (in the atomic nucleus), at a lecture at the Royal Institution in London.
May 26 » Dracula, a Gothic horror novel by Irish author Bram Stoker, is published.
July 11 » Salomon August Andrée leaves Spitsbergen to attempt to reach the North Pole by balloon. He later crashes and dies.
August 2 » Anglo-Afghan War: The Siege of Malakand ends when a relief column is able to reach the British garrison in the Malakand states.
November 1 » The first Library of Congress building opens its doors to the public; the library had previously been housed in the Congressional Reading Room in the U.S. Capitol.
December 9 » Activist Marguerite Durand founds the feminist daily newspaper La Fronde in Paris.
Day of marriage July 7, 1921
The temperature on July 7, 1921 was between 11.2 °C and 21.1 °C and averaged 15.7 °C. There was 1.1 mm of rain. There was 4.3 hours of sunshine (26%). The average windspeed was 2 Bft (weak wind) and was prevailing from the north. 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 16 » The Marxist Left in Slovakia and the Transcarpathian Ukraine holds its founding congress in Ľubochňa.
March 17 » The Second Polish Republic adopts the March Constitution.
June 28 » Serbian King Alexander I proclaims the new constitution of the Kingdom of Serbs, Croats and Slovenes, known thereafter as the Vidovdan Constitution.
July 11 » A truce in the Irish War of Independence comes into effect.
July 23 » The Communist Party of China (CPC) is established at the founding National Congress.
October 5 » The World Series is the first to be broadcast on radio.
Day of death February 7, 1942
The temperature on February 7, 1942 was between -13.1 °C and -7.5 °C and averaged -10.5 °C. There was 3.7 hours of sunshine (39%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the northeast. Source: KNMI
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 25 » World War II: Thailand declares war on the United States and United Kingdom.
April 18 » World War II: The Doolittle Raid on Japan: Tokyo, Yokohama, Kobe and Nagoya are bombed.
June 7 » World War II: The Battle of Midway ends in American victory.
July 18 » The Germans test fly the Messerschmitt Me 262 using its jet engines for the first time.
August 17 » World War II: U.S. Marines raid the Japanese-held Pacific island of Makin.
August 24 » World War II: The Battle of the Eastern Solomons. Japanese aircraft carrier Ryūjō is sunk, with the loss of seven officers and 113 crewmen. The US carrier USSEnterprise is heavily damaged.
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/I2128.php : accessed December 28, 2025), "Christina Francisca Ermers (1897-1942)".
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