The temperature on March 7, 1917 was between -7.7 °C and -0.7 °C and averaged -4.4 °C. There was 7.7 hours of sunshine (68%). The average windspeed was 5 Bft (very strong wind) and was prevailing from the northeast. 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 31 » World War I: Germany announces that its U-boats will resume unrestricted submarine warfare after a two-year hiatus.
March 31 » According to the terms of the Treaty of the Danish West Indies, the islands become American possessions.
April 2 » World War I: United States President Woodrow Wilson asks the U.S. Congress for a declaration of war on Germany.
April 12 » World War I: Canadian forces successfully complete the taking of Vimy Ridge from the Germans.
June 4 » The first Pulitzer Prizes are awarded: Laura E. Richards, Maude H. Elliott, and Florence Hall receive the first Pulitzer for biography (for Julia Ward Howe). Jean Jules Jusserand receives the first Pulitzer for history for his work With Americans of Past and Present Days. Herbert B. Swope receives the first Pulitzer for journalism for his work for the New York World.
November 26 » The National Hockey League is formed, with the Montreal Canadiens, Montreal Wanderers, Ottawa Senators, Quebec Bulldogs, and Toronto Arenas as its first teams.
Day of marriage December 10, 1942
The temperature on December 10, 1942 was between 0.5 °C and 8.1 °C and averaged 4.2 °C. There was 0.1 mm of rain. There was 2.4 hours of sunshine (31%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the south. Source: KNMI
In The Netherlands , there was from July 27, 1941 to February 23, 1945 the cabinet Gerbrandy II, with Prof. dr. P.S. Gerbrandy (ARP) as prime minister.
February 9 » World War II: Top United States military leaders hold their first formal meeting to discuss American military strategy in the war.
February 19 » World War II: United States President Franklin D. Roosevelt signs executive order 9066, allowing the United States military to relocate Japanese Americans to internment camps.
May 9 » Holocaust: The SS executes 588 Jewish residents of the Podolian town of Zinkiv (Khmelnytska oblast, Ukraine). The Zoludek Ghetto (in Belarus) is destroyed and all its inhabitants executed or deported.
June 7 » World War II: Aleutian Islands Campaign: Imperial Japanese soldiers begin occupying the American islands of Attu and Kiska, in the Aleutian Islands off Alaska.
September 21 » The Holocaust in Ukraine: On the Jewish holiday of Yom Kippur, Nazis send over 1,000 Jews of Pidhaitsi to Bełżec extermination camp.
October 11 » World War II: Off Guadalcanal, United States Navy ships intercept and defeat a Japanese force.
Day of death April 27, 1998
The temperature on April 27, 1998 was between 7.2 °C and 14.8 °C and averaged 10.1 °C. There was 6.1 mm of rain during 5.1 hours. There was 0.7 hours of sunshine (5%). The almost completely overcast was. The average windspeed was 2 Bft (weak wind) and was prevailing from the north-northeast. Source: KNMI
In The Netherlands , there was from Monday, August 22, 1994 to Monday, August 3, 1998 the cabinet a href="https://nl.wikipedia.org/wiki/Kabinet-Kok_I" class="extern">Kok I, with W. Kok (PvdA) as prime minister.
In The Netherlands , there was from Monday, August 3, 1998 to Monday, July 22, 2002 the cabinet Kok II, with W. Kok (PvdA) as prime minister.
February 14 » An oil tanker train collides with a freight train in Yaoundé, Cameroon, spilling fuel oil. One person scavenging the oil created a massive explosion which killed 120.
February 23 » In the United States, tornadoes in central Florida destroy or damage 2,600 structures and kill 42 people.
February 28 » First flight of RQ-4 Global Hawk, the first unmanned aerial vehicle certified to file its own flight plans and fly regularly in U.S. civilian airspace.
March 4 » Gay rights: Oncale v. Sundowner Offshore Services, Inc.: The Supreme Court of the United States rules that federal laws banning on-the-job sexual harassment also apply when both parties are the same sex.
October 7 » Matthew Shepard, a gay student at the University of Wyoming, is found tied to a fence after being savagely beaten by two young adults in Laramie, Wyoming. He died five days later.
November 26 » Tony Blair becomes the first Prime Minister of the United Kingdom to address the Oireachtas, the parliament of the Republic of Ireland.
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/I143314.php : accessed February 16, 2026), "Klaas Helder (1917-1998)".
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