The temperature on May 12, 1915 was between 2.1 °C and 16.2 °C and averaged 10.6 °C. There was 5.0 mm of rain. There was 2.2 hours of sunshine (14%). The average windspeed was 2 Bft (weak wind) and was prevailing from the west-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 24 » World War I: British Grand Fleet battle cruisers under Vice-Admiral Sir David Beatty engage Rear-Admiral Franz von Hipper's battle cruisers in the Battle of Dogger Bank.
March 20 » Albert Einstein publishes his general theory of relativity.
April 22 » The use of poison gas in World War I escalates when chlorine gas is released as a chemical weapon in the Second Battle of Ypres.
April 24 » The arrest of 250 Armenian intellectuals and community leaders in Istanbul marks the beginning of the Armenian Genocide.
July 25 » RFC Captain Lanoe Hawker becomes the first British pursuit aviator to earn the Victoria Cross.
August 17 » A Category 4 hurricane hits Galveston, Texas with winds at 135 miles per hour (217km/h).
Day of marriage April 24, 1940
The temperature on April 24, 1940 was between 12.4 °C and 19.3 °C and averaged 15.7 °C. There was 7.8 mm of rain during 2.2 hours. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the northeast. 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.
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 28 » World War II: Norwegian, French, Polish and British forces recapture Narvik in Norway. This is the first allied infantry victory of the War.
June 23 » Adolf Hitler goes on a three-hour tour of the architecture of Paris with architect Albert Speer and sculptor Arno Breker in his only visit to the city.
June 23 » Henry Larsen begins the first successful west-to-east navigation of Northwest Passage from Vancouver, British Columbia, Canada.
September 29 » Two Avro Ansons collide in mid-air over New South Wales, Australia, remain locked together, then land safely.
November 14 » World War II: In England, Coventry is heavily bombed by German Luftwaffe bombers. Coventry Cathedral is almost completely destroyed.
Day of death March 6, 1983
The temperature on March 6, 1983 was between 5.8 °C and 10.0 °C and averaged 8.0 °C. There was -0.1 mm of rain. The almost completely overcast was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west. 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.
When copying data from this family tree, please include a reference to the origin: Hendrik Dreyer, "Dreyer Tree", database, Genealogy Online (https://www.genealogieonline.nl/dreyer-tree/I11122.php : accessed January 31, 2026), "Roelof Petrus Gerhardus Dreyer (1915-1983)".
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