The temperature on August 18, 1910 was between 11.8 °C and 21.0 °C and averaged 16.7 °C. There was 8.8 hours of sunshine (60%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the southwest. Source: KNMI
January 13 » The first public radio broadcast takes place; a live performance of the operas Cavalleria rusticana and Pagliacci are sent out over the airwaves from the Metropolitan Opera House in New York.
March 3 » Rockefeller Foundation: John D. Rockefeller Jr. announces his retirement from managing his businesses so that he can devote all his time to philanthropy.
June 25 » Igor Stravinsky's ballet The Firebird is premiered in Paris, bringing him to prominence as a composer.
July 16 » John Robertson Duigan makes the first flight of the Duigan pusher biplane, the first aircraft built in Australia.
September 22 » The Duke of York's Picture House opens in Brighton, now the oldest continually operating cinema in Britain.
October 15 » Airship America is launched from New Jersey in the first attempt to cross the Atlantic by a powered aircraft.
Day of marriage October 22, 1942
The temperature on October 22, 1942 was between 6.4 °C and 14.2 °C and averaged 12.0 °C. There was 4.8 mm of rain during 7.5 hours. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the southwest. Source: KNMI
In The Netherlands , there was from July 27, 1941 to February 23, 1945 the cabinet Gerbrandy II, with Prof. dr. P.S. Gerbrandy (ARP) as prime minister.
February 8 » World War II: Japan invades Singapore.
February 20 » Lieutenant Edward O'Hare becomes America's first World War II flying ace.
April 17 » French prisoner of war General Henri Giraud escapes from his castle prison in Königstein Fortress.
October 6 » World War II: American troops force the Japanese from their positions east of the Matanikau River on Guadalcanal.
November 11 » World War II: France's zone libre is occupied by German forces in Case Anton.
November 12 » World War II: Naval Battle of Guadalcanal between Japanese and American forces begins near Guadalcanal. The battle lasts for three days and ends with an American victory.
Day of death February 24, 1957
The temperature on February 24, 1957 was between 0.8 °C and 7.4 °C and averaged 4.3 °C. There was 0.7 mm of rain during 1.2 hours. There was 0.4 hours of sunshine (4%). The almost completely overcast was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west. Source: KNMI
March 13 » Cuban student revolutionaries storm the presidential palace in Havana in a failed attempt on the life of President Fulgencio Batista.
March 25 » The European Economic Community is established with West Germany, France, Italy, Belgium, Netherlands and Luxembourg as the first members.
April 11 » United Kingdom agrees to Singaporean self-rule.
August 28 » U.S. Senator Strom Thurmond begins a filibuster to prevent the Senate from voting on Civil Rights Act of 1957; he stopped speaking 24 hours and 18 minutes later, the longest filibuster ever conducted by a single Senator.
October 14 » At least 81 people are killed in the most devastating flood in the history of the Spanish city of Valencia.
December 20 » The initial production version of the Boeing 707 makes its first flight.
When copying data from this family tree, please include a reference to the origin: H. Grevinga, "Family tree Grevinga", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-grevinga/I2001.php : accessed February 19, 2026), "herman koers (1910-1957)".
Copy warning
Genealogical publications are copyright protected. Although data is often retrieved from public archives, the searching, interpreting, collecting, selecting and sorting of the data results in a unique product. Copyright protected work may not simply be copied or republished.
Please stick to the following rules
Request permission to copy data or at least inform the author, chances are that the author gives permission, often the contact also leads to more exchange of data.
Do not use this data until you have checked it, preferably at the source (the archives).
State from whom you have copied the data and ideally also his/her original source.