The temperature on April 3, 1911 was between -0.1 °C and 6.0 °C and averaged 2.8 °C. There was 1.0 mm of rain. There was 5.0 hours of sunshine (38%). The average windspeed was 5 Bft (very strong wind) and was prevailing from the north. Source: KNMI
January 15 » Palestinian Arabic-language Falastin newspaper founded.
May 23 » The New York Public Library is dedicated.
August 21 » The Mona Lisa is stolen by Vincenzo Peruggia, a Louvre employee.
September 7 » French poet Guillaume Apollinaire is arrested and put in jail on suspicion of stealing the Mona Lisa from the Louvre museum.
September 20 » The White Star Line's RMSOlympic collides with the British warship HMSHawke.
November 17 » Omega Psi Phi fraternity was founded on the campus of Howard University in Washington, D.C.
Day of marriage July 31, 1935
The temperature on July 31, 1935 was between 10.2 °C and 17.4 °C and averaged 13.6 °C. There was 0.2 mm of rain during 0.1 hours. There was 0.2 hours of sunshine (1%). The average windspeed was 2 Bft (weak wind) and was prevailing from the north-northwest. Source: KNMI
February 26 » Adolf Hitler orders the Luftwaffe to be re-formed, violating the provisions of the Treaty of Versailles.
April 8 » The Works Progress Administration is formed when the Emergency Relief Appropriation Act of 1935 becomes law.
June 12 » A ceasefire is negotiated between Bolivia and Paraguay, ending the Chaco War.
June 25 » Colombia–Soviet Union relations are established.
December 9 » The Downtown Athletic Club Trophy, later renamed the Heisman Trophy, is awarded for the first time. The winner is halfback Jay Berwanger of the University of Chicago.
December 30 » The Italian Air Force bombs a Swedish Red Cross hospital during the Second Italo-Abyssinian War.
Day of death August 10, 1980
The temperature on August 10, 1980 was between 11.0 °C and 21.5 °C and averaged 16.6 °C. There was 5.1 hours of sunshine (34%). The partly clouded was. The average windspeed was 1 Bft (weak wind) and was prevailing from the east. 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.
January 21 » Iran Air Flight 291 crashes in the Alborz Mountains while on approach to Mehrabad International Airport in Tehran, Iran, killing 128 people.
February 25 » The government of Suriname is overthrown by a military coup led by Dési Bouterse.
June 3 » The 1980 Grand Island tornado outbreak hits Nebraska, causing five deaths and $300million (equivalent to $931million in 2019) worth of damage.
July 7 » During the Lebanese Civil War, 83 Tiger militants are killed during what will be known as the Safra massacre.
September 11 » A new constitution of Chile is established under the influence of then Chilean dictator Augusto Pinochet, which is subject to controversy in Chile today.
October 29 » Demonstration flight of a secretly modified C-130 for an Iran hostage crisis rescue attempt ends in crash landing at Eglin Air Force Base's Duke Field, Florida leading to cancellation of Operation Credible Sport.
When copying data from this family tree, please include a reference to the origin: W. Rovers, "Family tree Ro(o)vers", database, Genealogy Online (https://www.genealogieonline.nl/stamboom_rovers/I18984.php : accessed February 21, 2026), "Petrus Franciscus de Roover (1911-1980)".
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