The temperature on May 25, 1920 was between 14.4 °C and 22.9 °C and averaged 18.2 °C. There was 6.6 mm of rain. There was 0.8 hours of sunshine (5%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south-southeast. Source: KNMI
In The Netherlands , there was from September 9, 1918 to September 18, 1922 the cabinet Ruys de Beerenbrouck I, with Jonkheer mr. Ch.J.M. Ruys de Beerenbrouck (RKSP) as prime minister.
January 17 » Alcohol Prohibition begins in the United States as the Volstead Act goes into effect.
February 9 » Under the terms of the Svalbard Treaty, international diplomacy recognizes Norwegian sovereignty over Arctic archipelago Svalbard, and designates it as demilitarized.
July 11 » In the East Prussian plebiscite the local populace decides to remain with Weimar Germany.
August 13 » Polish–Soviet War: The Battle of Warsaw begins and will last till August 25. The Red Army is defeated.
August 26 » The 19th amendment to United States Constitution takes effect, giving women the right to vote.
November 16 » Qantas, Australia's national airline, is founded as Queensland and Northern Territory Aerial Services Limited.
Day of marriage September 25, 1946
The temperature on September 25, 1946 was between 9.4 °C and 19.7 °C and averaged 15.0 °C. There was 1.2 hours of sunshine (10%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south-southwest. Source: KNMI
From June 24, 1945 till July 3, 1946 the Netherlands had a cabinet Schermerhorn - Drees with the prime ministers Prof. ir. W. Schermerhorn (VDB) and W. Drees (PvdA).
In The Netherlands , there was from July 3, 1946 to August 7, 1948 the cabinet Beel I, with Dr. L.J.M. Beel (KVP) as prime minister.
January 25 » United Nations Security Council Resolution 1 relating to Military Staff Committee is adopted.
February 8 » The People's Republic of Korea is dissolved in the North, establishing the communist-controlled Provisional People's Committee of North Korea.
May 7 » Tokyo Telecommunications Engineering (later renamed Sony) is founded.
August 16 » Mass riots in Kolkata begin; more than 4,000 people would be killed in 72 hours.
October 1 » Nazi leaders are sentenced at the Nuremberg trials.
October 13 » France adopts the constitution of the Fourth Republic.
Day of death September 21, 2007
The temperature on September 21, 2007 was between 11.1 °C and 20.7 °C and averaged 15.6 °C. There was -0.1 mm of rain. There was 3.0 hours of sunshine (24%). The partly or heavily clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south-southwest. Source: KNMI
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.
In The Netherlands , there was from Thursday, February 22, 2007 to Thursday, October 14, 2010 the cabinet Balkenende IV, with Mr.dr. J.P. Balkenende (CDA) as prime minister.
May 17 » Trains from North and South Korea cross the 38th Parallel in a test-run agreed by both governments. This is the first time that trains have crossed the Demilitarized Zone since 1953.
September 10 » Former Prime Minister of Pakistan Nawaz Sharif returns to Pakistan after seven years in exile, following a military coup in October 1999.
September 27 » NASA launches the Dawn probe to the asteroid belt.
November 15 » Cyclone Sidr hits Bangladesh, killing an estimated 5,000 people and destroying parts of the world's largest mangrove forest, the Sundarbans.
November 29 » The Armed Forces of the Philippines lay siege to the Peninsula Manila after soldiers led by Senator Antonio Trillanes stage a mutiny.
December 20 » Elizabeth II becomes the oldest monarch of the United Kingdom, surpassing Queen Victoria, who lived for 81 years and 243 days.
When copying data from this family tree, please include a reference to the origin: Hans Opperman, "Family tree Opperman", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-opperman/I3417.php : accessed January 8, 2026), "Klaas Hettinga (1920-2007)".
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