January 23 » Second Boer War: The Battle of Spion Kop between the forces of the South African Republic and the Orange Free State and British forces ends in a British defeat.
March 13 » British forces occupy Bloemfontein, Orange Free State, during the Second Boer War.
April 5 » Archaeologists in Knossos, Crete, discover a large cache of clay tablets with hieroglyphic writing in a script they call Linear B.
June 25 » The Taoist monk Wang Yuanlu discovers the Dunhuang manuscripts, a cache of ancient texts that are of great historical and religious significance, in the Mogao Caves of Dunhuang, China.
August 14 » The Eight-Nation Alliance occupies Beijing, China, in a campaign to end the bloody Boxer Rebellion in China.
October 19 » Max Planck discovers Planck's law of black-body radiation.
Day of marriage August 11, 1927
The temperature on August 11, 1927 was between 12.4 °C and 20.5 °C and averaged 16.0 °C. There was 6.6 hours of sunshine (44%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the southwest. Source: KNMI
January 1 » New Mexican oil legislation goes into effect, leading to the formal outbreak of the Cristero War.
March 11 » In New York City, Samuel Roxy Rothafel opens the Roxy Theatre.
May 26 » The last Ford Model T rolls off the assembly line after a production run of 15,007,003 vehicles.
June 13 » Aviator Charles Lindbergh receives a ticker tape parade down 5th Avenue in New York City.
June 27 » Prime Minister of Japan Tanaka Giichi convenes an eleven-day conference to discuss Japan's strategy in China. The Tanaka Memorial, a forged plan for world domination, is later claimed to be a secret report leaked from this conference.
September 18 » The Columbia Broadcasting System goes on the air.
Day of death February 13, 1949
The temperature on February 13, 1949 was between 0.2 °C and 5.0 °C and averaged 2.6 °C. There was 0.3 mm of rain during 0.2 hours. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south. Source: KNMI
From August 7, 1948 till March 15, 1951 the Netherlands had a cabinet Drees - Van Schaik with the prime ministers Dr. W. Drees (PvdA) and Mr. J.R.H. van Schaik (KVP).
April 1 » Chinese Civil War: The Chinese Communist Party holds unsuccessful peace talks with the Nationalist Party in Beijing, after three years of fighting.
April 4 » Cold War: Twelve nations sign the North Atlantic Treaty creating the North Atlantic Treaty Organization.
September 21 » The People's Republic of China is proclaimed.
November 26 » The Constituent Assembly of India adopts the constitution presented by Dr. B. R. Ambedkar.
December 7 » Chinese Civil War: The Government of the Republic of China moves from Nanking to Taipei, Taiwan.
December 10 » Chinese Civil War: The People's Liberation Army begins its siege of Chengdu, the last Kuomintang-held city in mainland China, forcing President of the Republic of China Chiang Kai-shek and his government to retreat to Taiwan.
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/I173647.php : accessed December 30, 2025), "Pieter Jozinus Pettinga (1900-1949)".
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