January 16 » The United States Senate accepts the Anglo-German treaty of 1899 in which the United Kingdom renounces its claims to the Samoan islands.
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.
April 14 » The Exposition Universelle begins.
May 29 » N'Djamena is founded as Fort-Lamy by the French commander Émile Gentil.
June 20 » Baron Eduard Toll, leader of the Russian Polar Expedition of 1900, departs Saint Petersburg in Russia on the explorer ship Zarya, never to return.
July 9 » The Governor of Shanxi province in North China orders the execution of 45 foreign Christian missionaries and local church members, including children.
Day of marriage January 24, 1929
The temperature on January 24, 1929 was between -2.1 °C and 3.4 °C and averaged 0.4 °C. There was 0.3 mm of rain. There was 2.7 hours of sunshine (31%). The average windspeed was 2 Bft (weak wind) and was prevailing from the north-northwest. Source: KNMI
In The Netherlands , there was from March 8, 1926 to August 10, 1929 the cabinet De Geer I, with Jonkheer mr. D.J. de Geer (CHU) as prime minister.
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.
January 6 » Mother Teresa arrives by sea in Calcutta, India, to begin her work among India's poorest and sick people.
April 6 » Huey P. Long, Governor of Louisiana, is impeached by the Louisiana House of Representatives.
April 8 » Indian independence movement: At the Delhi Central Assembly, Bhagat Singh and Batukeshwar Dutt throw handouts and bombs to court arrest.
May 15 » A fire at the Cleveland Clinic in Cleveland, Ohio kills 123.
June 7 » The Lateran Treaty is ratified, bringing Vatican City into existence.
August 8 » The German airship Graf Zeppelin begins a round-the-world flight.
Day of death July 21, 1961
The temperature on July 21, 1961 was between 12.9 °C and 15.8 °C and averaged 14.2 °C. There was 0.5 mm of rain during 0.9 hours. There was -0.1 hours of sunshine (0%). The almost completely overcast was. The average windspeed was 2 Bft (weak wind) and was prevailing from the west-northwest. Source: KNMI
January 3 » A protest by agricultural workers in Baixa de Cassanje, Portuguese Angola, turns into a revolt, opening the Angolan War of Independence, the first of the Portuguese Colonial Wars.
January 26 » John F. Kennedy appoints Janet G. Travell to be the first woman Physician to the President.
May 4 » American civil rights movement: The "Freedom Riders" begin a bus trip through the South.
May 4 » Malcolm Ross and Victor Prather attain a new altitude record for manned balloon flight ascending in the Strato-Lab V open gondola to 113,740 feet (34.67km).
May 14 » Civil rights movement: A white mob twice attacks a Freedom Riders bus near Anniston, Alabama, before fire-bombing the bus and attacking the civil rights protesters who flee the burning vehicle.
September 16 » Pakistan establishes its Space and Upper Atmosphere Research Commission with Abdus Salam as its head.
When copying data from this family tree, please include a reference to the origin: Hendrik de Graaf, "Family tree Plugboer", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-plugboer/I2559.php : accessed February 20, 2026), "Hessel Zijlstra (1900-1961)".
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