January 28 » The Carnegie Institution of Washington is founded in Washington, D.C. with a $10 million gift from Andrew Carnegie.
January 30 » The first Anglo-Japanese Alliance is signed in London.
April 14 » James Cash Penney opens his first store in Kemmerer, Wyoming.
April 18 » The 7.5 Mw Guatemala earthquake shakes Guatemala with a maximum Mercalli intensity of VIII (Severe), killing between 800–2,000.
April 20 » Pierre and Marie Curie refine radium chloride.
August 9 » Edward VII and Alexandra of Denmark are crowned King and Queen of the United Kingdom of Great Britain and Ireland.
Day of marriage May 12, 1920
The temperature on May 12, 1920 was between 11.3 °C and 23.5 °C and averaged 15.8 °C. There was 11.1 mm of rain. There was 3.0 hours of sunshine (19%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the south. 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 10 » The Treaty of Versailles takes effect, officially ending World War I.
February 2 » The Tartu Peace Treaty is signed between Estonia and Russia.
March 8 » The Arab Kingdom of Syria, the first modern Arab state to come into existence, is established.
March 22 » Azeri and Turkish army soldiers with participation of Kurdish gangs attacked the Armenian inhabitants of Shushi (Nagorno Karabakh).
April 23 » The Grand National Assembly of Turkey (TBMM) is founded in Ankara. The assembly denounces the government of Sultan Mehmed VI and announces the preparation of a temporary constitution.
May 16 » In Rome, Pope Benedict XV canonizes Joan of Arc.
Day of death February 15, 1962
The temperature on February 15, 1962 was between -1.7 °C and 6.6 °C and averaged 2.0 °C. There was 3.4 mm of rain during 6.0 hours. There was 1.7 hours of sunshine (17%). The heavily clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west-southwest. Source: KNMI
January 15 » The Derveni papyrus, Europe's oldest surviving manuscript dating to 340 BC, is found in northern Greece.
February 27 » Two dissident Republic of Vietnam Air Force pilots bomb the Independence Palace in Saigon in a failed attempt to assassinate South Vietnam President Ngô Đình Diệm.
May 10 » Marvel Comics publishes the first issue of The Incredible Hulk.
October 20 » China launches simultaneous offensives in Ladakh and across the McMahon Line, igniting the Sino-Indian War.
October 27 » An aircraft carrying Enrico Mattei, post-war Italian administrator, crashes in mysterious circumstances.
November 11 » Kuwait's National Assembly ratifies the Constitution of Kuwait.
When copying data from this family tree, please include a reference to the origin: Jan Kaper, "Family tree Kaper", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-kaper/I12962.php : accessed February 17, 2026), "Sieberdina Paapst (1902-1962)".
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