The temperature on September 28, 1915 was between 5.8 °C and 14.2 °C and averaged 9.7 °C. There was 0.5 mm of rain. There was 7.3 hours of sunshine (62%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west. Source: KNMI
In The Netherlands , there was from August 29, 1913 to September 9, 1918 the cabinet Cort van der Linden, with Mr. P.W.A. Cort van der Linden (liberaal) as prime minister.
January 13 » The 6.7 Mw Avezzano earthquake shakes the Province of L'Aquila in Italy with a maximum Mercalli intensity of XI (Extreme), killing between 29,978–32,610.
May 7 » World War I: German submarine U-20 sinks RMS Lusitania, killing 1,198 people, including 128 Americans. Public reaction to the sinking turns many former pro-Germans in the United States against the German Empire.
July 1 » Leutnant Kurt Wintgens of the then-named German Deutsches Heer's Fliegertruppe army air service achieves the first known aerial victory with a synchronized machine-gun armed fighter plane, the Fokker M.5K/MG Eindecker.
July 24 » The passenger ship SSEastland capsizes while tied to a dock in the Chicago River. A total of 844 passengers and crew are killed in the largest loss of life disaster from a single shipwreck on the Great Lakes.
August 15 » A story in New York World newspaper reveals that the Imperial German government had purchased excess phenol from Thomas Edison that could be used to make explosives for the war effort and diverted it to Bayer for aspirin production.
September 30 » World War I: Radoje Ljutovac becomes the first soldier in history to shoot down an enemy aircraft with ground-to-air fire.
Day of marriage July 31, 1940
The temperature on July 31, 1940 was between 13.0 °C and 20.7 °C and averaged 16.4 °C. There was 2.3 hours of sunshine (15%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the northwest. Source: KNMI
In The Netherlands , there was from August 10, 1939 to September 3, 1940 the cabinet De Geer II, with Jonkheer mr. D.J. de Geer (CHU) as prime minister.
In The Netherlands , there was from September 3, 1940 to July 27, 1941 the cabinet Gerbrandy I, with Prof. dr. P.S. Gerbrandy (ARP) as prime minister.
February 28 » Basketball is televised for the first time (Fordham University vs. the University of Pittsburgh in Madison Square Garden).
June 5 » World War II: After a brief lull in the Battle of France, the Germans renew the offensive against the remaining French divisions south of the River Somme in Operation Fall Rot ("Case Red").
June 12 » World War II: Thirteen thousand British and French troops surrender to Major General Erwin Rommel at Saint-Valery-en-Caux.
July 19 » World War II: Army order 112 forms the Intelligence Corps of the British Army.
October 21 » The first edition of the Ernest Hemingway novel For Whom the Bell Tolls is published.
November 2 » World War II: First day of Battle of Elaia–Kalamas between the Greeks and the Italians.
Day of death April 1, 2006
The temperature on April 1, 2006 was between 6.9 °C and 14.9 °C and averaged 11.1 °C. There was 0.1 mm of rain during 0.2 hours. There was 6.6 hours of sunshine (51%). The partly clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the southwest. Source: KNMI
In The Netherlands , there was from Tuesday, May 27, 2003 to Friday, July 7, 2006 the cabinet Balkenende II, with Mr.dr. J.P. Balkenende (CDA) as prime minister.
In The Netherlands , there was from Friday, July 7, 2006 to Thursday, February 22, 2007 the cabinet Balkenende III, with Mr.dr. J.P. Balkenende (CDA) as prime minister.
February 22 » At least six men stage Britain's biggest robbery, stealing £53m (about $92.5 million or €78 million) from a Securitas depot in Tonbridge, Kent.
May 5 » The government of Sudan signs an accord with the Sudan Liberation Army.
May 18 » The post Loktantra Andolan government passes a landmark bill curtailing the power of the monarchy and making Nepal a secular country.
November 10 » Sri Lankan Tamil politician Nadarajah Raviraj is assassinated in Colombo.
November 21 » Anti-Syrian Lebanese politician and government minister Pierre Gemayel is assassinated in suburban Beirut.
December 28 » War in Somalia: The militaries of Somalia's Transitional Federal Government and Ethiopian troops capture Mogadishu unopposed.
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/I211602.php : accessed February 10, 2026), "Sietse Grijpstra (1915-2006)".
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