The temperature on November 2, 1887 was about 7.2 °C. The air pressure was 5 kgf/m2 and came mainly from the east-northeast. The airpressure was 75 cm mercury. The atmospheric humidity was 80%. Source: KNMI
In The Netherlands , there was from April 23, 1884 to April 21, 1888 the cabinet Heemskerk, with Mr. J. Heemskerk Azn. (conservatief) as prime minister.
February 8 » The Dawes Act authorizes the President of the United States to survey Native American tribal land and divide it into individual allotments.
February 23 » The French Riviera is hit by a large earthquake, killing around 2,000.
May 9 » Buffalo Bill Cody's Wild West Show opens in London.
June 18 » The Reinsurance Treaty between Germany and Russia is signed.
July 26 » Publication of the Unua Libro, founding the Esperanto movement.
November 9 » The United States receives rights to Pearl Harbor, Hawaii.
Day of marriage November 10, 1909
The temperature on November 10, 1909 was between 2.5 °C and 10.5 °C and averaged 6.4 °C. There was 5.7 mm of rain. There was 4.3 hours of sunshine (47%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west. Source: KNMI
February 26 » Kinemacolor, the first successful color motion picture process, is first shown to the general public at the Palace Theatre in London.
April 6 » Robert Peary and Matthew Henson become the first people to reach the North Pole; Peary's claim has been disputed because of failings in his navigational ability.
April 11 » The city of Tel Aviv is founded.
May 13 » The first Giro d'Italia starts from Milan. Italian cyclist Luigi Ganna will be the winner.
July 16 » Persian Constitutional Revolution: Mohammad Ali Shah Qajar is forced out as Shah of Persia and is replaced by his son Ahmad Shah Qajar.
August 7 » Alice Huyler Ramsey and three friends become the first women to complete a transcontinental auto trip, taking 59 days to travel from New York, New York to San Francisco, California.
Day of death April 1, 1960
The temperature on April 1, 1960 was between 4.4 °C and 8.1 °C and averaged 6.0 °C. There was 0.1 mm of rain during 0.1 hours. The almost completely overcast was. The average windspeed was 2 Bft (weak wind) and was prevailing from the west-northwest. Source: KNMI
May 7 » Cold War: U-2 Crisis of 1960: Soviet leader Nikita Khrushchev announces that his nation is holding American U-2 pilot Gary Powers.
May 15 » The Soviet Union launches Sputnik 4.
July 4 » Due to the post-Independence Day admission of Hawaii as the 50th U.S. state on August 21, 1959, the 50-star flag of the United States debuts in Philadelphia, almost ten and a half months later (see Flag Acts (United States)).
September 8 » In Huntsville, Alabama, US President Dwight D. Eisenhower formally dedicates the Marshall Space Flight Center (NASA had already activated the facility on July 1).
November 14 » Ruby Bridges becomes the first black child to attend an all-white elementary school in Louisiana.
December 13 » While Emperor Haile Selassie of Ethiopia visits Brazil, his Imperial Bodyguard seizes the capital and proclaims him deposed and his son, Crown Prince Asfa Wossen, Emperor.
When copying data from this family tree, please include a reference to the origin: Nienke Oudbier, "Descendants van de Vlag1", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-oudbier/I1372.php : accessed February 23, 2026), "Cornelis Valkenburg (1887-1960)".
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