The temperature on June 21, 1917 was between 13.1 °C and 20.1 °C and averaged 16.5 °C. There was 5.8 mm of rain. There was 6.6 hours of sunshine (39%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the southwest. 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 22 » World War I: President Woodrow Wilson of the still-neutral United States calls for "peace without victory" in Europe.
July 28 » The Silent Parade took place in New York City, in protest to murders, lynchings, and other violence directed towards African Americans.
September 26 » World War I: The Battle of Polygon Wood begins.
November 7 » World War I: Third Battle of Gaza ends: British forces capture Gaza from the Ottoman Empire.
November 26 » The Manchester Guardian publishes the 1916 secret Sykes-Picot Agreement between the United Kingdom and France.
November 28 » The Estonian Provincial Assembly declares itself the sovereign power of Estonia.
Day of marriage October 25, 1930
The temperature on October 25, 1930 was between 3.1 °C and 10.0 °C and averaged 5.9 °C. There was 5.4 mm of rain during 3.3 hours. There was 3.0 hours of sunshine (30%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west-southwest. Source: KNMI
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 26 » The Indian National Congress declares 26 January as Independence Day or as the day for Poorna Swaraj ("Complete Independence") which occurred 17 years later.
February 18 » While studying photographs taken in January, Clyde Tombaugh discovers Pluto.
March 13 » The news of the discovery of Pluto is announced by Lowell Observatory.
May 24 » Amy Johnson lands in Darwin, Northern Territory, becoming the first woman to fly solo from England to Australia (she left on May 5 for the 11,000 mile flight).
September 8 » 3M begins marketing Scotch transparent tape.
October 3 » The German Socialist Labour Party in Poland – Left is founded.
Day of death August 4, 1963
The temperature on August 4, 1963 was between 14.9 °C and 20.8 °C and averaged 17.8 °C. There was 22.7 mm of rain during 4.2 hours. There was 0.1 hours of sunshine (1%). The heavily clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the south-southwest. Source: KNMI
March 21 » Alcatraz Federal Penitentiary (in California) closes.
April 11 » Pope John XXIII issues Pacem in terris, the first encyclical addressed to all Christians instead of only Catholics, and which described the conditions for world peace in human terms.
May 25 » The Organisation of African Unity is established in Addis Ababa, Ethiopia.
June 3 » Soldiers of the South Vietnamese Army attack protesting Buddhists in Huế with liquid chemicals from tear-gas grenades, causing 67 people to be hospitalized for blistering of the skin and respiratory ailments.
August 28 » March on Washington for Jobs and Freedom: The Reverend Martin Luther King, Jr. gives his I Have a Dream speech.
October 10 » The Partial Nuclear Test Ban Treaty comes into effect.
When copying data from this family tree, please include a reference to the origin: John Bart, "Family tree Denneman", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-denneman/I85.php : accessed January 4, 2026), "Adrianus Hopman (1917-1963)".
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