The temperature on April 30, 1886 was about 5.0 °C. The air pressure was 12 kgf/m2 and came mainly from the north-northeast. The airpressure was 76 cm mercury. The atmospheric humidity was 89%. Source: KNMI
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.
March 1 » The Anglo-Chinese School, Singapore is founded by Bishop William Oldham.
March 27 » Geronimo, Apache warrior, surrenders to the U.S. Army, ending the main phase of the Apache Wars.
April 8 » William Ewart Gladstone introduces the first Irish Home Rule Bill into the British House of Commons.
May 5 » The Bay View massacre: A militia fires into a crowd of protesters in Milwaukee, killing seven.
May 8 » Pharmacist John Pemberton first sells a carbonated beverage named "Coca-Cola" as a patent medicine.
June 26 » Henri Moissan isolated elemental Fluorine for the first time.
Day of marriage May 19, 1911
The temperature on May 19, 1911 was between 8.4 °C and 12.0 °C and averaged 9.9 °C. There was 0.8 mm of rain. The average windspeed was 4 Bft (moderate breeze) and was prevailing from the north-northwest. Source: KNMI
March 25 » In New York City, the Triangle Shirtwaist Factory fire kills 146 garment workers.
June 22 » Mexican Revolution: Government forces bring an end to the Magonista rebellion of 1911 in the Second Battle of Tijuana.
July 1 » Germany despatches the gunship SMSPanther to Morocco, sparking the Agadir Crisis.
August 24 » Manuel de Arriaga is elected and sworn-in as the first President of Portugal.
September 1 » The armored cruiser Georgios Averof is commissioned into the Greek Navy. It now serves as a museum ship.
December 27 » "Jana Gana Mana", the national anthem of India, is first sung in the Calcutta Session of the Indian National Congress.
Day of death April 12, 1954
The temperature on April 12, 1954 was between -0.5 °C and 11.0 °C and averaged 5.9 °C. There was -0.1 hours of sunshine (0%). The partly or heavily clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west-northwest. Source: KNMI
March 9 » McCarthyism: CBS television broadcasts the See It Now episode, "A Report on Senator Joseph McCarthy", produced by Fred Friendly.
June 9 » Joseph Welch, special counsel for the United States Army, lashes out at Senator Joseph McCarthy during the Army–McCarthy hearings, giving McCarthy the famous rebuke, "You've done enough. Have you no sense of decency, sir, at long last? Have you left no sense of decency?"
August 15 » Alfredo Stroessner begins his dictatorship in Paraguay.
September 3 » The People's Liberation Army begins shelling the Republic of China-controlled islands of Quemoy, starting the First Taiwan Strait Crisis.
November 1 » The Front de Libération Nationale fires the first shots of the Algerian War of Independence.
December 2 » The Sino-American Mutual Defense Treaty, between the United States and Taiwan, is signed in Washington, D.C.
When copying data from this family tree, please include a reference to the origin: Eva Drenth, "Family tree Diverse", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-drenth/I24087.php : accessed February 4, 2026), "Roelf Keijer (1886-1954)".
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