January 24 » Second Boer War: Boers stop a British attempt to break the Siege of Ladysmith in the Battle of Spion Kop.
January 31 » Datu Muhammad Salleh is killed in Kampung Teboh, Tambunan, ending the Mat Salleh Rebellion.
July 2 » Jean Sibelius' Finlandia receives its première performance in Helsinki with the Helsinki Philharmonic Society conducted by Robert Kajanus.
August 3 » The Firestone Tire and Rubber Company is founded.
September 13 » Filipino insurgents defeat a small American column in the Battle of Pulang Lupa, during the Philippine–American War.
October 9 » The Cook Islands become a territory of the United Kingdom.
Day of marriage May 30, 1931
The temperature on May 30, 1931 was between 8.0 °C and 22.4 °C and averaged 15.8 °C. There was 0.3 mm of rain during 0.3 hours. There was 8.2 hours of sunshine (50%). The average windspeed was 2 Bft (weak 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 26 » Swissair is founded as the national airline of Switzerland.
March 31 » A Transcontinental & Western Air airliner crashes near Bazaar, Kansas, killing eight, including University of Notre Dame head football coach Knute Rockne.
April 14 » The Spanish Cortes deposes King Alfonso XIII and proclaims the Second Spanish Republic.
July 1 » Wiley Post and Harold Gatty become the first people to circumnavigate the globe in a single-engined monoplane aircraft.
October 1 » Clara Campoamor persuades the Constituent Cortes to enfranchise women in Spain's new constitution.
December 9 » The Constituent Cortes approves a constitution which establishes the Second Spanish Republic.
Day of death November 30, 1975
The temperature on November 30, 1975 was between 2.0 °C and 4.0 °C and averaged 3.1 °C. There was -0.1 mm of rain. The almost completely overcast was. The average windspeed was 1 Bft (weak wind) and was prevailing from the south. Source: KNMI
In The Netherlands , there was from Friday, May 11, 1973 to Monday, December 19, 1977 the cabinet Den Uyl, with Drs. J.M. den Uyl (PvdA) as prime minister.
January 15 » The Alvor Agreement is signed, ending the Angolan War of Independence and giving Angola independence from Portugal.
January 30 » The Monitor National Marine Sanctuary is established as the first United States National Marine Sanctuary.
June 4 » The Governor of California Jerry Brown signs the California Agricultural Labor Relations Act into law, the first law in the U.S. giving farmworkers collective bargaining rights.
June 25 » Prime Minister Indira Gandhi declares a state of internal emergency in India.
July 17 » Apollo–Soyuz Test Project: An American Apollo and a Soviet Soyuz spacecraft dock with each other in orbit marking the first such link-up between spacecraft from the two nations.
November 14 » With the signing of the Madrid Accords, Spain abandons Western Sahara.
When copying data from this family tree, please include a reference to the origin: Gert Jonker, "Family tree Jonker", database, Genealogy Online (https://www.genealogieonline.nl/jonker_stamboom/I11987.php : accessed February 19, 2026), "Derk Jan Kleinen Traast (1900-1975)".
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