The temperature on April 13, 1889 was about 4.9 °C. There was 0.6 mm of rain. The air pressure was 4 kgf/m2 and came mainly from the north. The airpressure was 75 cm mercury. The atmospheric humidity was 87%. Source: KNMI
January 8 » Herman Hollerith is issued US patent #395,791 for the 'Art of Applying Statistics' — his punched card calculator.
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 2 » Menelik II, Emperor of Ethiopia, signs the Treaty of Wuchale, giving Italy control over Eritrea.
June 6 » The Great Seattle Fire destroys all of downtown Seattle.
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.
September 28 » The General Conference on Weights and Measures (CGPM) defines the length of a meter.
Day of marriage July 14, 1917
The temperature on July 14, 1917 was between 14.4 °C and 24.3 °C and averaged 19.6 °C. There was 4.1 hours of sunshine (25%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the south-southeast. Source: KNMI
In The Netherlands , there was from August 29, 1913 to September 9, 1918 the cabinet Cort van der Linden, with Mr. P.W.A. Cort van der Linden (liberaal) as prime minister.
February 3 » First World War: The American entry into World War I begins when diplomatic relations with Germany are severed due to its unrestricted submarine warfare.
May 18 » World War I: The Selective Service Act of 1917 is passed, giving the President of the United States the power of conscription.
July 27 » World War I: The Allies reach the Yser Canal at the Battle of Passchendaele.
August 30 » Vietnamese prison guards led by Trịnh Văn Cấn mutiny at the Thái Nguyên penitentiary against local French authority.
October 15 » World War I: Dutch dancer Mata Hari is executed by France for espionage.
December 6 » Halifax Explosion: A munitions explosion near Halifax, Nova Scotia kills more than 1,900 people in the largest artificial explosion up to that time.
Day of death November 25, 1970
The temperature on November 25, 1970 was between 3.5 °C and 10.9 °C and averaged 6.5 °C. There was 7.1 hours of sunshine (85%). The almost cloudless was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south-southeast. Source: KNMI
March 4 » French submarine Eurydice explodes underwater, resulting in the loss of the entire 57-man crew.
April 1 » President Richard Nixon signs the Public Health Cigarette Smoking Act into law, requiring the Surgeon General's warnings on tobacco products and banning cigarette advertising on television and radio in the United States, effective 1 January 1971.
April 8 » Bahr El-Baqar primary school bombing: Israeli bombers strike an Egyptian school. Forty-six children are killed.
April 28 » Vietnam War: U.S. President Richard Nixon formally authorizes American combat troops to take part in the Cambodian campaign.
September 1 » Palestinian guerrillas attack the motorcade of King Hussein of Jordan in a failed assassination attempt.
November 4 » Salvador Allende takes office as President of Chile, the first Marxist to become president of a Latin American country through open elections.
When copying data from this family tree, please include a reference to the origin: Leo Petri, "Family tree Petri", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-petri/I131.php : accessed February 28, 2026), "Catharina-Dorothea PETRI (1889-1970)".
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