The temperature on May 16, 1911 was between 6.7 °C and 20.5 °C and averaged 15.0 °C. There was 7.8 hours of sunshine (50%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the northeast. Source: KNMI
January 18 » Eugene B. Ely lands on the deck of the USSPennsylvania anchored in San Francisco Bay, the first time an aircraft landed on a ship.
January 30 » The destroyer USSTerry makes the first airplane rescue at sea saving the life of Douglas McCurdy ten miles from Havana, Cuba.
April 2 » The Australian Bureau of Statistics conducts the country's first national census.
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 29 » Ishi, considered the last Native American to make contact with European Americans, emerges from the wilderness of northeastern California.
September 29 » Italy declares war on the Ottoman Empire.
Day of marriage April 19, 1930
The temperature on April 19, 1930 was between 0.3 °C and 10.1 °C and averaged 5.1 °C. There was 3.7 hours of sunshine (26%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south-southeast. Source: KNMI
In The Netherlands , there was from August 10, 1929 to May 26, 1933 the cabinet Ruys de Beerenbrouck III, with Jonkheer mr. Ch.J.M. Ruys de Beerenbrouck (RKSP) as prime minister.
February 10 » The Việt Nam Quốc Dân Đảng launches the failed Yên Bái mutiny in hope to overthrow French protectorate over Vietnam.
March 31 » The Motion Picture Production Code is instituted, imposing strict guidelines on the treatment of sex, crime, religion and violence in film, in the U.S., for the next thirty-eight years.
April 18 » The British Broadcasting Corporation announced that "there is no news" in their evening report.
June 21 » One-year conscription comes into force in France.
October 27 » Ratifications exchanged in London for the first London Naval Treaty go into effect immediately, further limiting the expensive naval arms race among its five signatories.
Day of death April 11, 1974
The temperature on April 11, 1974 was between 3.5 °C and 20.5 °C and averaged 11.5 °C. There was 7.4 hours of sunshine (54%). The partly clouded was. The average windspeed was 1 Bft (weak wind) and was prevailing from the north. Source: KNMI
In The Netherlands , there was from Friday, May 11, 1973 to Monday, December 19, 1977 the cabinet Den Uyl, with Drs. J.M. den Uyl (PvdA) as prime minister.
February 1 » A fire in the 25-story Joelma Building in São Paulo, Brazil kills 189 and injures 293.
February 22 » Samuel Byck attempts to hijack an aircraft at Baltimore/Washington International Airport with the intention of crashing it into the White House to assassinate Richard Nixon, but is killed by police.
February 23 » The Symbionese Liberation Army demands $4 million more to release kidnap victim Patty Hearst.
May 18 » Nuclear weapons testing: Under project Smiling Buddha, India successfully detonates its first nuclear weapon becoming the sixth nation to do so.
June 1 » The Heimlich maneuver for rescuing choking victims is published in the journal Emergency Medicine.
September 12 » Juventude Africana Amílcar Cabral is founded in Guinea-Bissau.
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/I133065.php : accessed October 19, 2026), "Pietje Prins (1911-1974)".
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