The temperature on July 18, 1911 was between 12.7 °C and 20.4 °C and averaged 15.8 °C. There was 0.8 mm of rain. There was 3.9 hours of sunshine (24%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west. 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 29 » The M1911 .45 ACP pistol becomes the official U.S. Army side arm.
May 9 » The works of Gabriele D'Annunzio are placed in the Index of Forbidden Books by the Vatican.
July 4 » A massive heat wave strikes the northeastern United States, killing 380 people in eleven days and breaking temperature records in several cities.
September 7 » French poet Guillaume Apollinaire is arrested and put in jail on suspicion of stealing the Mona Lisa from the Louvre museum.
October 9 » An accidental bomb explosion triggers the Wuchang Uprising against the Chinese monarchy.
Day of marriage January 2, 1935
The temperature on January 2, 1935 was between 5.1 °C and 8.6 °C and averaged 6.9 °C. There was 0.1 mm of rain. There was 0.5 hours of sunshine (6%). The average windspeed was 2 Bft (weak wind) and was prevailing from the northwest. Source: KNMI
February 12 » USSMacon, one of the two largest helium-filled airships ever created, crashes into the Pacific Ocean off the coast of California and sinks.
April 23 » The Polish Constitution of 1935 is adopted.
May 6 » New Deal: Under the authority of the newly-enacted Federal Emergency Relief Administration, President Franklin D. Roosevelt issues Executive Order 7034 to create the Works Progress Administration.
July 5 » The National Labor Relations Act, which governs labor relations in the United States, is signed into law by President Franklin D. Roosevelt.
August 14 » Franklin D. Roosevelt signs the Social Security Act, creating a government pension system for the retired.
December 30 » The Italian Air Force bombs a Swedish Red Cross hospital during the Second Italo-Abyssinian War.
Day of death November 16, 1944
The temperature on November 16, 1944 was between 0.3 °C and 7.1 °C and averaged 3.4 °C. There was 0.5 mm of rain during 0.5 hours. There was 3.1 hours of sunshine (35%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the southwest. Source: KNMI
In The Netherlands , there was from July 27, 1941 to February 23, 1945 the cabinet Gerbrandy II, with Prof. dr. P.S. Gerbrandy (ARP) as prime minister.
April 22 » The 1st Air Commando Group using Sikorsky R-4 helicopters stage the first use of helicopters in combat with combat search and rescue operations in the China Burma India Theater.
September 9 » World War II: The Fatherland Front takes power in Bulgaria through a military coup in the capital and armed rebellion in the country. A new pro-Soviet government is established.
October 11 » The Tuvan People's Republic is annexed by the Soviet Union.
October 13 » World War II: The Soviet Riga Offensive captures the city.
October 21 » World War II: The Nemmersdorf massacre against the German civilians takes place.
October 25 » Second World War: The USSTang under Richard O'Kane (the top American submarine ace of the war) is sunk by the ship's own malfunctioning torpedo.
When copying data from this family tree, please include a reference to the origin: R. Ratsma, "Family tree diverse families", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-ratsma/I53.php : accessed January 5, 2026), "Pieter Ratsma (1911-1944)".
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