The temperature on June 30, 1920 was between 9.8 °C and 20.6 °C and averaged 16.5 °C. There was 4.3 mm of rain. There was 9.4 hours of sunshine (56%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west-southwest. 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.
April 15 » Two security guards are murdered during a robbery in South Braintree, Massachusetts. Anarchists Sacco and Vanzetti would be convicted of and executed for the crime, amid much controversy.
April 23 » The Grand National Assembly of Turkey (TBMM) is founded in Ankara. The assembly denounces the government of Sultan Mehmed VI and announces the preparation of a temporary constitution.
August 13 » Polish–Soviet War: The Battle of Warsaw begins and will last till August 25. The Red Army is defeated.
August 16 » The congress of the Communist Party of Bukhara opens. The congress would call for armed revolution.
September 7 » Two newly purchased Savoia flying boats crash in the Swiss Alps en route to Finland where they would serve with the Finnish Air Force, killing both crews.
September 17 » The National Football League is organized as the American Professional Football Association in Canton, Ohio.
Day of death May 28, 1984
The temperature on May 28, 1984 was between 7.7 °C and 15.4 °C and averaged 11.2 °C. There was -0.1 mm of rain. The almost completely overcast was. The average windspeed was 2 Bft (weak wind) and was prevailing from the northwest. Source: KNMI
In The Netherlands , there was from Thursday, November 4, 1982 to Monday, July 14, 1986 the cabinet Lubbers I, with Drs. R.F.M. Lubbers (CDA) as prime minister.
February 22 » President of Bangladesh, H M Ershad upgraded South Sylhet's sub-division status to a district and renamed it back to Moulvibazar.
April 4 » President Ronald Reagan calls for an international ban on chemical weapons.
April 19 » Advance Australia Fair is proclaimed as Australia's national anthem, and green and gold as the national colours.
July 17 » The national drinking age in the United States was changed from 18 to 21.
October 16 » Desmond Tutu is awarded the Nobel Peace Prize.
November 14 » Zamboanga City mayor Cesar Climaco, a prominent critic of the government of Philippine President Ferdinand Marcos, is assassinated in his home city.
When copying data from this family tree, please include a reference to the origin: Hans Dunning, "Family tree Dunning", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-dunning/R2664.php : accessed February 3, 2026), "Hilbert van der Sleen (1920-1984)".
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