April 21 » Spanish–American War: The United States Navy begins a blockade of Cuban ports. When the U.S. Congress issued a declaration of war on April 25, it declared that a state of war had existed from this date.
September 10 » Empress Elisabeth of Austria is assassinated by Luigi Lucheni.
September 18 » The Fashoda Incident triggers the last war scare between Britain and France.
October 18 » The United States takes possession of Puerto Rico from Spain.
December 3 » The Duquesne Country and Athletic Club defeated an all-star collection of early football players 16–0, in what is considered to be the very first all-star game for professional American football.
December 10 » Spanish–American War: The Treaty of Paris is signed, officially ending the conflict.
Day of marriage May 1, 1919
The temperature on May 1, 1919 was between 3.9 °C and 9.4 °C and averaged 6.5 °C. There was 4.1 mm of rain. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west. 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.
April 13 » Jallianwala Bagh massacre: British Indian Army troops lead by Brigadier-General Reginald Dyer killed approx 379-1000 unarmed demonstrators including men and women in Amritsar, India; and approximately 1,500 injured.
June 11 » Sir Barton wins the Belmont Stakes, becoming the first horse to win the U.S. Triple Crown.
September 18 » The Netherlands gives women the right to vote.
October 16 » Adolf Hitler delivers his first public address at a meeting of the German Workers' Party.
October 28 » The U.S. Congress passes the Volstead Act over President Wilson's veto, paving the way for Prohibition to begin the following January.
Day of death September 27, 1967
The temperature on September 27, 1967 was between 10.1 °C and 21.3 °C and averaged 15.8 °C. There was 5.2 hours of sunshine (44%). The partly clouded was. The average windspeed was 1 Bft (weak wind) and was prevailing from the southwest. Source: KNMI
May 13 » Dr. Zakir Husain becomes the third President of India. He is the first Muslim President of the Indian Union. He holds this position until August 24, 1969.
May 24 » Egypt imposes a blockade and siege of the Red Sea coast of Israel.
May 26 » The Beatles' Sgt. Pepper's Lonely Hearts Club Band is released.
September 15 » U.S. President Lyndon B. Johnson, responding to a sniper attack at the University of Texas at Austin, writes a letter to Congress urging the enactment of gun control legislation.
November 30 » Pro-Soviet communists in the Philippines establish Malayang Pagkakaisa ng Kabataan Pilipino as its new youth wing.
December 13 » Constantine II of Greece attempts an unsuccessful counter-coup against the Regime of the Colonels.
When copying data from this family tree, please include a reference to the origin: Hans Opperman, "Family tree Opperman", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-opperman/I3359.php : accessed March 6, 2026), "Jistske Jurna (1898-1967)".
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