The temperature on April 26, 1889 was about 6.6 °C. The air pressure was 8 kgf/m2 and came mainly from the west-northwest. The airpressure was 76 cm mercury. The atmospheric humidity was 92%. Source: KNMI
January 22 » Columbia Phonograph is formed in Washington, D.C.
January 30 » Archduke Crown Prince Rudolf of Austria, heir to the Austro-Hungarian crown, is found dead with his mistress Baroness Mary Vetsera in the Mayerling.
May 31 » Johnstown Flood: Over 2,200 people die after a dam fails and sends a 60-foot (18-meter) wall of water over the town of Johnstown, Pennsylvania.
June 29 » Hyde Park and several other Illinois townships vote to be annexed by Chicago, forming the largest United States city in area and second largest in population at the time.
November 14 » Pioneering female journalist Nellie Bly (aka Elizabeth Cochrane) begins a successful attempt to travel around the world in less than 80 days. She completes the trip in 72 days.
November 23 » The first jukebox goes into operation at the Palais Royale Saloon in San Francisco.
Day of marriage April 29, 1930
The temperature on April 29, 1930 was between 8.1 °C and 20.0 °C and averaged 14.1 °C. There was 12.8 hours of sunshine (87%). The average windspeed was 5 Bft (very strong wind) and was prevailing from the northeast. 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.
March 29 » Heinrich Brüning is appointed German Reichskanzler.
June 21 » One-year conscription comes into force in France.
September 8 » 3M begins marketing Scotch transparent tape.
September 17 » The Kurdish Ararat rebellion is suppressed by the Turks.
November 3 » Getúlio Vargas becomes Head of the Provisional Government in Brazil after a bloodless coup on October 24.
December 29 » Sir Muhammad Iqbal's presidential address in Allahabad introduces the two-nation theory and outlines a vision for the creation of Pakistan.
Day of death February 16, 1966
The temperature on February 16, 1966 was between -3.8 °C and 1.5 °C and averaged -1.3 °C. There was 3.8 hours of sunshine (38%). The heavily clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the northeast. Source: KNMI
June 2 » Surveyor program: Surveyor 1 lands in Oceanus Procellarum on the Moon, becoming the first U.S. spacecraft to soft-land on another world.
July 1 » The first color television transmission in Canada takes place from Toronto.
July 15 » Vietnam War: The United States and South Vietnam begin Operation Hastings to push the North Vietnamese out of the Vietnamese Demilitarized Zone.
August 23 » Lunar Orbiter 1 takes the first photograph of Earth from orbit around the Moon.
September 6 » Prime Minister Hendrik Verwoerd, the architect of apartheid, is stabbed to death in Cape Town, South Africa during a parliamentary meeting.
November 30 » Barbados becomes independent from the United Kingdom.
When copying data from this family tree, please include a reference to the origin: Joop Klavers, "Family tree Klavers", database, Genealogy Online (https://www.genealogieonline.nl/stamboom_klavers/I54596.php : accessed February 13, 2026), "Johan Theodoor Vennedunker (1889-1966)".
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