The temperature on February 18, 1911 was between 7.7 °C and 9.9 °C and averaged 9.4 °C. The average windspeed was 6 Bft (strong wind) and was prevailing from the west-southwest. Source: KNMI
February 18 » The first official flight with airmail takes place from Allahabad, United Provinces, British India (now India), when Henri Pequet, a 23-year-old pilot, delivers 6,500 letters to Naini, about 10 kilometres (6.2mi) away.
March 25 » In New York City, the Triangle Shirtwaist Factory fire kills 146 garment workers.
April 8 » Dutch physicist Heike Kamerlingh Onnes discovers superconductivity.
June 28 » The Nakhla meteorite, the first one to suggest signs of aqueous processes on Mars, falls to Earth, landing in Egypt.
August 29 » Ishi, considered the last Native American to make contact with European Americans, emerges from the wilderness of northeastern California.
December 27 » "Jana Gana Mana", the national anthem of India, is first sung in the Calcutta Session of the Indian National Congress.
Day of marriage May 20, 1939
The temperature on May 20, 1939 was between 1.7 °C and 15.8 °C and averaged 9.1 °C. There was 12.2 hours of sunshine (77%). The average windspeed was 2 Bft (weak wind) and was prevailing from the north. 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.
February 27 » United States labor law: The U.S. Supreme Court rules in NLRB v. Fansteel Metallurgical Corp. that the National Labor Relations Board has no authority to force an employer to rehire workers who engage in sit-down strikes.
April 30 » NBC inaugurates its regularly scheduled television service in New York City, broadcasting President Franklin D. Roosevelt's N.Y. World's Fair opening day ceremonial address.
May 22 » World War II: Germany and Italy sign the Pact of Steel.
November 8 » In Munich, Adolf Hitler narrowly escapes the assassination attempt of Georg Elser while celebrating the 16th anniversary of the Beer Hall Putsch.
November 30 » Winter War: Soviet forces cross the Finnish border in several places and bomb Helsinki and several other Finnish cities, starting the war.
December 18 » World War II: The Battle of the Heligoland Bight, the first major air battle of the war, takes place.
Day of death February 23, 1979
The temperature on February 23, 1979 was between -0.3 °C and 3.7 °C and averaged 1.7 °C. There was 3.4 mm of rain during 2.7 hours. There was -0.1 hours of sunshine (0%). The heavily clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the northwest. Source: KNMI
In The Netherlands , there was from Monday, December 19, 1977 to Friday, September 11, 1981 the cabinet Van Agt I, with Mr. A.A.M. van Agt (CDA/KVP) as prime minister.
March 19 » The United States House of Representatives begins broadcasting its day-to-day business via the cable television network C-SPAN.
July 12 » The island nation of Kiribati becomes independent from the United Kingdom.
August 27 » The Troubles: Eighteen British soldiers are killed in an ambush by the Provisional Irish Republican Army near Warrenpoint, Northern Ireland, in the deadliest attack on British forces during Operation Banner. An IRA bomb also kills British royal family member Lord Mountbatten and three others on his boat at Mullaghmore, Republic of Ireland.
October 17 » Mother Teresa is awarded the Nobel Peace Prize.
November 15 » A package from Unabomber Ted Kaczynski begins smoking in the cargo hold of a flight from Chicago to Washington, D.C., forcing the plane to make an emergency landing.
November 30 » Pink Floyd's rock opera, The Wall is released.
When copying data from this family tree, please include a reference to the origin: Hans Weening, "Family tree Weening", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-weening/I112928.php : accessed October 16, 2026), "Ids van der Ploeg (1911-1979)".
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