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 » The original manuscript of William Bradford's history, "Of Plymouth Plantation" is returned to the Governor of Massachusetts by the Bishop of London after being taken during the American Revolutionary War.
June 22 » British colonial officers Charles Walter Rand and Lt. Charles Egerton Ayerst are assassinated in Pune, Maharashtra, India by the Chapekar brothers and Mahadeo Vinayak Ranade, who are later caught and hanged.
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.
August 10 » German chemist Felix Hoffmann discovers an improved way of synthesizing acetylsalicylic acid (aspirin).
December 9 » Activist Marguerite Durand founds the feminist daily newspaper La Fronde in Paris.
Day of marriage May 22, 1919
The temperature on May 22, 1919 was between 8.2 °C and 23.8 °C and averaged 16.7 °C. There was 13.5 hours of sunshine (84%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the east-southeast. 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 21 » A revolutionary Irish parliament is founded and declares the independence of the Irish Republic. One of the first engagements of the Irish War of Independence takes place.
June 28 » The Treaty of Versailles is signed, ending the state of war between Germany and the Allies of World War I.
October 2 » U.S. President Woodrow Wilson suffers a massive stroke, leaving him incapacitated for several weeks.
October 16 » Adolf Hitler delivers his first public address at a meeting of the German Workers' Party.
November 11 » Latvian forces defeat the West Russian Volunteer Army at Riga in the Latvian War of Independence.
December 21 » American anarchist Emma Goldman is deported to Russia.
Day of death November 30, 1959
The temperature on November 30, 1959 was between 2.4 °C and 7.6 °C and averaged 5.3 °C. There was 0.5 mm of rain during 1.3 hours. The partly clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the east-southeast. Source: KNMI
June 9 » The USSGeorge Washington is launched. It is the first nuclear-powered ballistic missile submarine.
July 27 » The Continental League is announced as baseball's "3rd major league" in the United States.
August 21 » United States President Dwight D. Eisenhower signs an executive order proclaiming Hawaii the 50th state of the union. Hawaii's admission is currently commemorated by Hawaii Admission Day.
August 31 » A parcel bomb sent by Ngô Đình Nhu, younger brother and chief adviser of South Vietnamese President Ngô Đình Diệm, fails to kill King Norodom Sihanouk of Cambodia.
September 12 » The Soviet Union launches a large rocket, Lunik II, at the moon.
September 26 » Typhoon Vera, the strongest typhoon to hit Japan in recorded history, makes landfall, killing 4,580 people and leaving nearly 1.6 million others homeless.
When copying data from this family tree, please include a reference to the origin: Hans Weening, "Family tree Weening", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-weening/I109053.php : accessed December 30, 2025), "Sibbeltje Kooistra (1897-1959)".
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