The temperature on May 11, 1866 was about 10.6 °C. There was 7 mm of rain. The air pressure was 13 kgf/m2 and came mainly from the south-southwest. The airpressure was 75 cm mercury. The atmospheric humidity was 91%. Source: KNMI
In The Netherlands , there was from February 1, 1862 to February 10, 1866 the cabinet Thorbecke II, with Mr. J.R. Thorbecke (liberaal) as prime minister.
In The Netherlands , there was from February 10, 1866 to June 1, 1866 the cabinet Fransen van de Putte, with I.D. Fransen van de Putte (liberaal) as prime minister.
From June 1, 1866 till June 4, 1868 the Netherlands had a cabinet Van Zuijlen van Nijevelt - Heemskerk with the prime ministers Mr. J.P.J.A. graaf Van Zuijlen van Nijevelt (AR) and Mr. J. Heemskerk Azn. (conservatief).
January 12 » The Royal Aeronautical Society is formed in London.
February 21 » Lucy Hobbs Taylor becomes the first American woman to graduate from dental school.
April 6 » The Grand Army of the Republic, an American patriotic organization composed of Union veterans of the American Civil War, is founded. It lasts until 1956.
April 8 » Italy and Prussia ally against the Austrian Empire.
August 17 » The Grand Duchy of Baden announces her withdrawal from the German Confederation and signs a treaty of peace and alliance with Prussia.
August 23 » Austro-Prussian War ends with the Treaty of Prague.
Day of marriage August 11, 1894
The temperature on August 11, 1894 was about 16.1 °C. The airpressure was 76 cm mercury. The atmospheric humidity was 79%. Source: KNMI
In The Netherlands , there was from August 21, 1891 to May 9, 1894 the cabinet Van Tienhoven, with Mr. G. van Tienhoven (unie-liberaal) as prime minister.
In The Netherlands , there was from May 9, 1894 to July 27, 1897 the cabinet Roëll, with Jonkheer mr. J. Roëll (oud-liberaal) as prime minister.
February 12 » Anarchist Émile Henry hurls a bomb into the Cafe Terminus in Paris, killing one person and wounding 20.
April 14 » The first ever commercial motion picture house opened in New York City using ten Kinetoscopes, a device for peep-show viewing of films.
June 28 » Labor Day becomes an official US holiday.
September 1 » Over 400 people die in the Great Hinckley Fire, a forest fire in Hinckley, Minnesota.
September 15 » First Sino-Japanese War: Japan defeats Qing dynasty China in the Battle of Pyongyang.
November 17 » H. H. Holmes, one of the first modern serial killers, is arrested in Boston, Massachusetts.
Day of death April 8, 1941
The temperature on April 8, 1941 was between -0.9 °C and 9.8 °C and averaged 3.9 °C. There was 12.5 hours of sunshine (93%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the north-northeast. Source: KNMI
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.
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.
January 21 » Sparked by the murder of a German officer in Bucharest, Romania the day before, members of the Iron Guard engaged in a rebellion and pogrom killing 125 Jews.
May 5 » Emperor Haile Selassie returns to Addis Ababa; the country commemorates the date as Liberation Day or Patriots' Victory Day.
May 27 » World War II: U.S. President Franklin D. Roosevelt proclaims an "unlimited national emergency".
June 22 » World War II: Nazi Germany invades the Soviet Union in Operation Barbarossa.
August 15 » Corporal Josef Jakobs is executed by firing squad at the Tower of London at 07:12, making him the last person to be executed at the Tower for espionage.
September 5 » Whole territory of Estonia is occupied by Nazi Germany.
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/I82147.php : accessed February 7, 2026), "Jan Lehkamp (1866-1941)".
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