The temperature on February 20, 1883 was about 7.1 °C. The air pressure was 4 kgf/m2 and came mainly from the south-southwest. The airpressure was 77 cm mercury. The atmospheric humidity was 79%. Source: KNMI
In The Netherlands , there was from August 20, 1879 to April 23, 1883 the cabinet Van Lijnden van Sandenburg, with Mr. C.Th. baron Van Lijnden van Sandenburg (conservatief-AR) as prime minister.
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 20 » The Paris Convention for the Protection of Industrial Property is signed.
August 25 » France and Viet Nam sign the Treaty of Huế, recognizing a French protectorate over Annam and Tonkin.
September 8 » The Northern Pacific Railway (reporting mark NP) was completed in a ceremony at Gold Creek, Montana. Former president Ulysses S. Grant drove in the final "golden spike" in an event attended by rail and political luminaries.
October 4 » First run of the Orient Express.
October 22 » Mödling and Hinterbrühl Tram, Vienna, Austria, first electric tram powered by overhead wire.
November 18 » American and Canadian railroads institute five standard continental time zones, ending the confusion of thousands of local times.
Day of death December 18, 1943
The temperature on December 18, 1943 was between -2.7 °C and 6.2 °C and averaged 2.1 °C. There was 1.1 mm of rain during 1.1 hours. The average windspeed was 5 Bft (very strong wind) and was prevailing from the south. 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.
March 3 » World War II: In London, 173 people are killed in a crush while trying to enter an air-raid shelter at Bethnal Green tube station.
March 4 » World War II: The Battle of Fardykambos, one of the first major battles between the Greek Resistance and the occupying Royal Italian Army, begins. It ends on 6 March with the surrender of an entire Italian battalion and the liberation of the town of Grevena.
October 14 » World War II: The American Eighth Air Force loses 60 of 291 B-17 Flying Fortress during the Second Raid on Schweinfurt.
October 21 » World War II: The Provisional Government of Free India is formally established in Japanese-occupied Singapore.
December 15 » World War II: The Battle of Arawe begins during the New Britain campaign.
December 28 » World War II: After eight days of brutal house-to-house fighting, the Battle of Ortona concludes with the victory of the 1st Canadian Infantry Division over the German 1st Parachute Division and the capture of the Italian town of Ortona.
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/I63459.php : accessed February 10, 2026), "Gerrit Helder (1883-1943)".
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