The temperature on July 30, 1911 was between 19.2 °C and 28.3 °C and averaged 23.0 °C. There was 11.8 hours of sunshine (75%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the north-northeast. Source: KNMI
July 7 » The United States, UK, Japan, and Russia sign the North Pacific Fur Seal Convention of 1911 banning open-water seal hunting, the first international treaty to address wildlife preservation issues.
August 1 » Harriet Quimby takes her pilot's test and becomes the first U.S. woman to earn an Aero Club of America aviator's certificate.
September 1 » The armored cruiser Georgios Averof is commissioned into the Greek Navy. It now serves as a museum ship.
November 1 » World's first combat aerial bombing mission takes place in Libya during the Italo-Turkish War. Second Lieutenant Giulio Gavotti of Italy drops several small bombs.
December 29 » Mongolia gains independence from the Qing dynasty, enthroning 8th Jebtsundamba Khutughtu as Khagan of Mongolia.
December 29 » Sun Yat-sen becomes the provisional President of the Republic of China; he formally takes office on January 1, 1912.
Day of marriage June 19, 1954
The temperature on June 19, 1954 was between 14.3 °C and 28.7 °C and averaged 21.5 °C. There was 11.1 hours of sunshine (66%). The partly clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south-southeast. Source: KNMI
June 24 » First Indochina War: Battle of Mang Yang Pass: Viet Minh troops belonging to the 803rd Regiment ambush G.M.100 of France in An Khê.
August 16 » The first issue of Sports Illustrated is published.
September 11 » Hurricane Edna hits New England as a Category 2 hurricane, causing significant damage and 29 deaths.
September 30 » The U.S. Navy submarine USSNautilus is commissioned as the world's first nuclear-powered vessel.
October 27 » Benjamin O. Davis, Jr. becomes the first African-American general in the United States Air Force.
December 4 » The first Burger King is opened in Miami, Florida.
Day of death June 6, 1984
The temperature on June 6, 1984 was between 6.3 °C and 16.3 °C and averaged 12.2 °C. There was 1.2 mm of rain during 2.0 hours. There was 2.5 hours of sunshine (15%). The heavily clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west-southwest. Source: KNMI
In The Netherlands , there was from Thursday, November 4, 1982 to Monday, July 14, 1986 the cabinet Lubbers I, with Drs. R.F.M. Lubbers (CDA) as prime minister.
January 22 » The Apple Macintosh, the first consumer computer to popularize the computer mouse and the graphical user interface, is introduced during a Super Bowl XVIII television commercial.
May 6 » One hundred three Korean Martyrs are canonized by Pope John Paul II in Seoul.
May 8 » Corporal Denis Lortie enters the Quebec National Assembly and opens fire, killing three people and wounding 13. René Jalbert, Sergeant-at-Arms of the Assembly, succeeds in calming him, for which he will later receive the Cross of Valour.
May 8 » The Thames Barrier is officially opened, preventing the floodplain of most of Greater London from being flooded except under extreme circumstances.
August 4 » The Republic of Upper Volta changes its name to Burkina Faso.
November 14 » Zamboanga City mayor Cesar Climaco, a prominent critic of the government of Philippine President Ferdinand Marcos, is assassinated in his home city.
When copying data from this family tree, please include a reference to the origin: Eva Drenth, "Family tree Diverse", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-drenth/I24853.php : accessed February 5, 2026), "Cornelis Antonius Poncia (1911-1984)".
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