The temperature on March 21, 1889 was about 7.3 °C. There was 5 mm of rain. The air pressure was 8 kgf/m2 and came mainly from the north-northeast. The airpressure was 74 cm mercury. The atmospheric humidity was 83%. Source: KNMI
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.
March 23 » The Ahmadiyya Muslim Community is established by Mirza Ghulam Ahmad in Qadian, British India.
April 1 » The University of Northern Colorado was established, as the Colorado State Normal School.
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.
July 11 » Tijuana, Mexico, is founded.
November 8 » Montana is admitted as the 41st U.S. state.
Day of marriage May 4, 1912
The temperature on May 4, 1912 was between 5.1 °C and 12.1 °C and averaged 8.7 °C. There was 0.1 hours of sunshine (1%). The average windspeed was 2 Bft (weak wind) and was prevailing from the north. Source: KNMI
January 4 » The Scout Association is incorporated throughout the British Empire by royal charter.
April 16 » Harriet Quimby becomes the first woman to fly an airplane across the English Channel.
May 5 » Pravda, the "voice" of the Communist Party of the Soviet Union, begins publication in Saint Petersburg.
June 30 » The Regina Cyclone, Canada's deadliest tornado event, kills 28 people in Regina, Saskatchewan.
October 19 » Italo-Turkish War: Italy takes possession of what is now Libya from the Ottoman Empire.
November 19 » First Balkan War: The Serbian Army captures Bitola, ending the five-century-long Ottoman rule of Macedonia.
Day of death August 11, 1952
The temperature on August 11, 1952 was between 13.4 °C and 22.8 °C and averaged 17.6 °C. There was 0.2 mm of rain during 0.6 hours. There was 3.2 hours of sunshine (21%). The partly clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south-southwest. Source: KNMI
February 15 » King George VI of the United Kingdom is buried in St George's Chapel, Windsor Castle.
April 15 » First flight of the Boeing B-52 Stratofortress.
April 28 » The Sino-Japanese Peace Treaty (Treaty of Taipei) is signed in Taipei, Taiwan between Japan and the Republic of China to officially end the Second Sino-Japanese War.
June 26 » The Pan-Malayan Labour Party is founded in Malaya, as a union of statewide labour parties.
August 11 » Hussein bin Talal is proclaimed King of Jordan.
September 15 » The United Nations cedes Eritrea to Ethiopia.
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/I17969.php : accessed October 24, 2026), "Tjeerd Postma (1889-1952)".
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