The temperature on October 11, 1883 was about 15.7 °C. The air pressure was 1 kgf/m2 and came mainly from the east-southeast. The airpressure was 76 cm mercury. The atmospheric humidity was 69%. Source: KNMI
In The Netherlands , there was from August 20, 1879 to April 23, 1883 the cabinet Van Lijnden van Sandenburg, with Mr. C.Th. baron Van Lijnden van Sandenburg (conservatief-AR) as prime minister.
In The Netherlands , there was from April 23, 1884 to April 21, 1888 the cabinet Heemskerk, with Mr. J. Heemskerk Azn. (conservatief) as prime minister.
January 16 » The Pendleton Civil Service Reform Act, establishing the United States Civil Service, is enacted by Congress.
May 20 » Krakatoa begins to erupt; the volcano explodes three months later, killing more than 36,000 people.
May 27 » Alexander III is crowned Tsar of Russia.
May 30 » In New York City, a stampede on the recently opened Brooklyn Bridge killed twelve people.
August 12 » The last quagga dies at the Natura Artis Magistra, a zoo in Amsterdam, Netherlands.
August 27 » Eruption of Krakatoa: Four enormous explosions destroy the island of Krakatoa and cause years of climate change.
Day of marriage April 21, 1910
The temperature on April 21, 1910 was between 7.2 °C and 13.5 °C and averaged 10.8 °C. There was 5.8 mm of rain. There was 2.8 hours of sunshine (20%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the west-northwest. Source: KNMI
March 28 » Henri Fabre becomes the first person to fly a seaplane, the Fabre Hydravion, after taking off from a water runway near Martigues, France.
June 25 » The United States Congress passes the Mann Act, which prohibits interstate transport of women or girls for “immoral purposes”; the ambiguous language would be used to selectively prosecute people for years to come.
July 15 » In his book Clinical Psychiatry, Emil Kraepelin gives a name to Alzheimer's disease, naming it after his colleague Alois Alzheimer.
August 20 » Extremely dry and windy weather in the Inland Northwest of the United States causes several small wildfires to coalesce into the Great Fire of 1910, burning approximately 3million acres (12,000km) and killing 87 people.
September 22 » The Duke of York's Picture House opens in Brighton, now the oldest continually operating cinema in Britain.
October 11 » Piloted by Arch Hoxsey, Theodore Roosevelt becomes the first U.S. president to fly in an airplane.
Day of death August 1, 1939
The temperature on August 1, 1939 was between 11.9 °C and 18.5 °C and averaged 15.3 °C. There was 0.7 mm of rain during 0.2 hours. There was 0.8 hours of sunshine (5%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the southwest. Source: KNMI
In The Netherlands , there was from June 24, 1937 to July 25, 1939 the cabinet Colijn IV, with Dr. H. Colijn (ARP) as prime minister.
In The Netherlands , there was from July 25, 1939 to August 10, 1939 the cabinet Colijn V, with Dr. H. Colijn (ARP) as prime minister.
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.
April 30 » The 1939–40 New York World's Fair opens.
May 22 » World War II: Germany and Italy sign the Pact of Steel.
August 2 » Albert Einstein and Leo Szilard write a letter to Franklin D. Roosevelt, urging him to begin the Manhattan Project to develop a nuclear weapon.
September 9 » World War II: The Battle of Hel begins, the longest-defended pocket of Polish Army resistance during the German invasion of Poland.
November 8 » In Munich, Adolf Hitler narrowly escapes the assassination attempt of Georg Elser while celebrating the 16th anniversary of the Beer Hall Putsch.
December 18 » World War II: The Battle of the Heligoland Bight, the first major air battle of the war, takes place.
When copying data from this family tree, please include a reference to the origin: Kees Lunenberg, "Family tree Lunenberg", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-lunenberg/R41.php : accessed February 6, 2026), "leonardus Janssen (1883-1939)".
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