March 7 » The German liner SSKaiser Wilhelm der Grosse becomes the first ship to send wireless signals to shore.
April 30 » Hawaii becomes a territory of the United States, with Sanford B. Dole as governor.
June 20 » Baron Eduard Toll, leader of the Russian Polar Expedition of 1900, departs Saint Petersburg in Russia on the explorer ship Zarya, never to return.
June 25 » The Taoist monk Wang Yuanlu discovers the Dunhuang manuscripts, a cache of ancient texts that are of great historical and religious significance, in the Mogao Caves of Dunhuang, China.
July 2 » The first Zeppelin flight takes place on Lake Constance near Friedrichshafen, Germany.
July 9 » The Federation of Australia is given royal assent.
Day of marriage November 2, 1921
The temperature on November 2, 1921 was between 1.7 °C and 9.2 °C and averaged 6.7 °C. There was 1.2 mm of rain. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west-northwest. Source: KNMI
In The Netherlands , there was from September 9, 1918 to September 18, 1922 the cabinet Ruys de Beerenbrouck I, with Jonkheer mr. Ch.J.M. Ruys de Beerenbrouck (RKSP) as prime minister.
January 20 » The British K-class submarine HMS K5 sinks in the English Channel; all 56 on board die.
March 18 » The second Peace of Riga is signed between Poland and the Soviet Union.
March 19 » Irish War of Independence: One of the biggest engagements of the war takes place at Crossbarry, County Cork. About 100 Irish Republican Army (IRA) volunteers escape an attempt by over 1,300 British forces to encircle them.
August 28 » The Red Army dissolved the Free Territory, after driving the Black Army out of Ukraine.
September 21 » A storage silo in Oppau, Germany, explodes, killing 500–600 people.
October 13 » Soviet republics sign the Treaty of Kars to formalize the borders between Turkey and the South Caucasus states.
Day of death August 16, 1939
The temperature on August 16, 1939 was between 8.7 °C and 21.8 °C and averaged 15.6 °C. There was 9.8 hours of sunshine (67%). The average windspeed was 2 Bft (weak wind) and was prevailing from the northeast. 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.
March 28 » Spanish Civil War: Generalissimo Francisco Franco conquers Madrid after a three-year siege.
April 14 » The Grapes of Wrath, by American author John Steinbeck is first published by the Viking Press.
August 23 » World War II: Nazi Germany and the Soviet Union sign a non-aggression treaty, the Molotov–Ribbentrop Pact. In a secret addition to the pact, the Baltic states, Finland, Romania, and Poland are divided between the two nations.
September 10 » World War II: The submarine HMSOxley is mistakenly sunk by the submarine HMSTriton near Norway and becomes the Royal Navy's first loss of a submarine in the war.
September 18 » World War II: The Polish government of Ignacy Mościcki flees to Romania.
September 30 » NBC broadcasts the first televised American football game.
When copying data from this family tree, please include a reference to the origin: Henk Mintjes, "De Mintjes Stamboom", database, Genealogy Online (https://www.genealogieonline.nl/de-mintjes-stamboom/I299.php : accessed February 24, 2026), "Johannes van Efferen (1900-1939)".
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