February 4 » The Philippine–American War begins with the Battle of Manila.
February 6 » Spanish–American War: The Treaty of Paris, a peace treaty between the United States and Spain, is ratified by the United States Senate.
March 31 » Malolos, capital of the First Philippine Republic, is captured by American forces.
September 13 » Mackinder, Ollier and Brocherel make the first ascent of Batian (5,199 m - 17,058ft), the highest peak of Mount Kenya.
October 11 » The Second Boer War erupts in South Africa between the British-ruled Cape Colony, and the Boer-ruled Transvaal and Orange Free State.
November 29 » FC Barcelona is founded by Catalan, Spanish and Englishmen. It later develops into one of Spanish football's most iconic and strongest teams.
Day of marriage December 1, 1927
The temperature on December 1, 1927 was between 0.5 °C and 2.4 °C and averaged 1.7 °C. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the east. Source: KNMI
January 27 » Ibn Saud takes the title of King of Nejd.
February 23 » German theoretical physicist Werner Heisenberg writes a letter to fellow physicist Wolfgang Pauli, in which he describes his uncertainty principle for the first time.
April 12 » Rocksprings, Texas was hit by an F5 tornado that destroyed 235 of the 247 buildings in the town and killed 72 townspeople and injured 205; third deadliest tornado in Texas history.
May 1 » The Union Labor Life Insurance Company is founded by the American Federation of Labor.
July 16 » Augusto César Sandino leads a raid on U.S. Marines and Nicaraguan Guardia Nacional that had been sent to apprehend him in the village of Ocotal, but is repulsed by one of the first dive-bombing attacks in history.
July 24 » The Menin Gate war memorial is unveiled at Ypres.
Day of death July 25, 1991
The temperature on July 25, 1991 was between 12.4 °C and 20.1 °C and averaged 15.7 °C. There was 0.8 mm of rain during 0.5 hours. There was 3.3 hours of sunshine (21%). The partly or heavily clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the south east. Source: KNMI
In The Netherlands , there was from Tuesday, November 7, 1989 to Monday, August 22, 1994 the cabinet Lubbers III, with Drs. R.F.M. Lubbers (CDA) as prime minister.
January 20 » Sudan's government imposes Islamic law nationwide, worsening the civil war between the country's Muslim north and Christian south.
February 28 » The first Gulf War ends.
August 16 » Indian Airlines Flight 257, a Boeing 737-200, crashes during approach to Imphal Airport, killing all 69 people on board.
August 17 » Strathfield massacre: In Sydney, New South Wales, Australia, taxi driver Wade Frankum shoots seven people and injures six others before turning the gun on himself.
August 25 » Linus Torvalds announces the first version of what will become Linux.
August 31 » Kyrgyzstan declares its independence from the Soviet Union.
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/I1092.php : accessed September 28, 2026), "Jacobus Ytsma (1899-1991)".
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