March 1 » Henri Becquerel discovers radioactive decay.
April 6 » In Athens, the opening of the first modern Olympic Games is celebrated, 1,500 years after the original games are banned by Roman emperor Theodosius I.
April 15 » Closing ceremony of the Games of the I Olympiad in Athens, Greece.
May 26 » Charles Dow publishes the first edition of the Dow Jones Industrial Average.
August 27 » Anglo-Zanzibar War: The shortest war in world history (09:02 to 09:40), between the United Kingdom and Zanzibar.
September 21 » Anglo-Egyptian conquest of Sudan: British forces under the command of Horatio Kitchener take Dongola.
Day of marriage July 30, 1923
The temperature on July 30, 1923 was between 13.0 °C and 19.4 °C and averaged 15.8 °C. There was 1.0 mm of rain. There was 4.2 hours of sunshine (27%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the southwest. Source: KNMI
In The Netherlands , there was from September 19, 1922 to August 4, 1925 the cabinet Ruys de Beerenbrouck II, with Jonkheer mr. Ch.J.M. Ruys de Beerenbrouck (RKSP) as prime minister.
March 3 » TIME magazine is published for the first time.
September 29 » The French Mandate for Syria and the Lebanon takes effect.
October 13 » Ankara becomes the capital of Turkey.
October 16 » The Walt Disney Company is founded.
October 31 » The first of 160 consecutive days of 100° Fahrenheit at Marble Bar, Western Australia.
November 8 » Beer Hall Putsch: In Munich, Adolf Hitler leads the Nazis in an unsuccessful attempt to overthrow the German government.
Day of death November 2, 1969
The temperature on November 2, 1969 was between 8.9 °C and 14.6 °C and averaged 12.3 °C. The heavily clouded was. The average windspeed was 4 Bft (moderate breeze) and was prevailing from the southwest. Source: KNMI
January 18 » United Airlines Flight 266 crashes into Santa Monica Bay killing all 32 passengers and six crew members.
July 19 » Chappaquiddick incident: U.S. Senator Ted Kennedy crashes his car into a tidal pond at Chappaquiddick Island, Massachusetts, killing his passenger Mary Jo Kopechne.
August 4 » Vietnam War: At the apartment of French intermediary Jean Sainteny in Paris, American representative Henry Kissinger and North Vietnamese representative Xuân Thuỷ begin secret peace negotiations. The negotiations will eventually fail.
August 7 » Richard Nixon appoints Luis R. Bruce, a Mohawk-Oglala Sioux and co-founder of the National Congress of American Indians, as the new commissioner of the Bureau of Indian Affairs.
November 12 » Vietnam War: Independent investigative journalist Seymour Hersh breaks the story of the My Lai Massacre.
December 17 » Project Blue Book: The United States Air Force closes its study of UFOs.
When copying data from this family tree, please include a reference to the origin: Van Knippenberg, "Family tree Van Knippenberg", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-van-knippenberg/I1119.php : accessed February 16, 2026), "Johannes Mathijs Knippenbergh (1896-1969)".
Copy warning
Genealogical publications are copyright protected. Although data is often retrieved from public archives, the searching, interpreting, collecting, selecting and sorting of the data results in a unique product. Copyright protected work may not simply be copied or republished.
Please stick to the following rules
Request permission to copy data or at least inform the author, chances are that the author gives permission, often the contact also leads to more exchange of data.
Do not use this data until you have checked it, preferably at the source (the archives).
State from whom you have copied the data and ideally also his/her original source.