The temperature on October 3, 1915 was between -0.5 °C and 15.6 °C and averaged 7.7 °C. There was 2.7 mm of rain. There was 8.5 hours of sunshine (74%). The average windspeed was 2 Bft (weak wind) and was prevailing from the north-northwest. 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.
February 22 » World War I: The Imperial German Navy institutes unrestricted submarine warfare.
March 20 » Albert Einstein publishes his general theory of relativity.
July 5 » The Liberty Bell leaves Philadelphia by special train on its way to the Panama–Pacific International Exposition. This is the last trip outside Philadelphia that the custodians of the bell intend to permit.
July 28 » The United States begins a 19-year occupation of Haiti.
August 27 » Attempted assassination of Bishop Patrick Heffron, bishop of the Diocese of Winona by Rev. Louis M. Lesches.
September 5 » The pacifist Zimmerwald Conference begins.
Day of marriage April 30, 1940
The temperature on April 30, 1940 was between 7.6 °C and 18.7 °C and averaged 13.2 °C. There was 11.0 hours of sunshine (74%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the east. 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.
March 5 » Six high-ranking members of Soviet politburo, including Joseph Stalin, sign an order for the execution of 25,700 Polish intelligentsia, including 14,700 Polish POWs, in what will become known as the Katyn massacre.
May 14 » World War II: Rotterdam, Netherlands is bombed by the Luftwaffe of Nazi Germany despite a ceasefire, killing about 900 people and destroying the historic city center.
May 17 » World War II: Germany occupies Brussels, Belgium.
June 25 » World War II: The French armistice with Germany comes into effect.
August 6 » Estonia is illegally annexed by the Soviet Union.
November 5 » Franklin D. Roosevelt is the first and only President of the United States to be elected to a third term.
Day of death June 28, 1979
The temperature on June 28, 1979 was between 7.5 °C and 21.3 °C and averaged 15.8 °C. There was 11.9 hours of sunshine (71%). The partly clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the southwest. Source: KNMI
In The Netherlands , there was from Monday, December 19, 1977 to Friday, September 11, 1981 the cabinet Van Agt I, with Mr. A.A.M. van Agt (CDA/KVP) as prime minister.
January 25 » Pope John Paul II starts his first official papal visits outside Italy to The Bahamas, Dominican Republic, and Mexico.
September 22 » A bright flash, resembling the detonation of a nuclear weapon, is observed near the Prince Edward Islands. Its cause is never determined.
October 27 » Saint Vincent and the Grenadines gains its independence from the United Kingdom.
November 17 » Brisbane Suburban Railway Electrification. The first stage from Ferny Grove to Darra is commissioned.
December 3 » Ayatollah Ruhollah Khomeini becomes the first Supreme Leader of Iran.
December 23 » Soviet–Afghan War: Soviet Union forces occupy Kabul, the Afghan capital.
When copying data from this family tree, please include a reference to the origin: Joop Klavers, "Family tree Klavers", database, Genealogy Online (https://www.genealogieonline.nl/stamboom_klavers/I82265.php : accessed February 22, 2026), "Johannes Sjoerd Wiegman (1915-1979)".
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