February 1 » Shinhan Bank, the oldest bank in South Korea, opens in Seoul.
April 18 » The Greco-Turkish War is declared between Greece and the Ottoman Empire.
April 30 » J. J. Thomson of the Cavendish Laboratory announces his discovery of the electron as a subatomic particle, over 1,800 times smaller than a proton (in the atomic nucleus), at a lecture at the Royal Institution in London.
June 22 » British colonial officers Charles Walter Rand and Lt. Charles Egerton Ayerst are assassinated in Pune, Maharashtra, India by the Chapekar brothers and Mahadeo Vinayak Ranade, who are later caught and hanged.
September 10 » Lattimer massacre: A sheriff's posse kills 19 unarmed striking immigrant miners in Lattimer, Pennsylvania, United States.
December 30 » The British Colony of Natal annexes Zululand.
Day of marriage April 1, 1920
The temperature on April 1, 1920 was between 3.4 °C and 11.7 °C and averaged 7.7 °C. There was 3.1 mm of rain. There was 1.2 hours of sunshine (9%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south-southeast. 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 26 » Former Ford Motor Company executive Henry Leland launches the Lincoln Motor Company which he later sold to his former employer.
May 3 » A Bolshevik coup fails in the Democratic Republic of Georgia.
June 11 » During the U.S. Republican National Convention in Chicago, U.S. Republican Party leaders gathered in a room at the Blackstone Hotel to come to a consensus on their candidate for the U.S. presidential election, leading the Associated Press to coin the political phrase "smoke-filled room".
November 15 » The Free City of Danzig is established.
November 21 » Irish War of Independence: In Dublin, 31 people are killed in what became known as "Bloody Sunday".
December 11 » Irish War of Independence: In retaliation for a recent IRA ambush, British forces burn and loot numerous buildings in Cork city. Many civilians report being beaten, shot at, robbed and verbally abused by British forces.
Day of death April 16, 1971
The temperature on April 16, 1971 was between 4.4 °C and 9.2 °C and averaged 6.9 °C. There was 6.4 mm of rain during 3.2 hours. The almost completely overcast was. The average windspeed was 4 Bft (moderate breeze) and was prevailing from the west-southwest. Source: KNMI
February 9 » Apollo program: Apollo 14 returns to Earth after the third manned Moon landing.
March 12 » The 1971 Turkish military memorandum is sent to the Süleyman Demirel government of Turkey and the government resigns.
August 9 » The Troubles: The British Army in Northern Ireland launches Operation Demetrius. Hundreds of people are arrested and interned, thousands are displaced, and twenty are killed in the violence that followed.
September 11 » The Egyptian Constitution becomes official.
September 29 » Oman joins the Arab League.
December 6 » Pakistan severs diplomatic relations with India, initiating the Indo-Pakistani War of 1971.
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/I199692.php : accessed October 15, 2026), "Dirk Hendrik Roemers (1897-1971)".
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