The temperature on September 25, 1911 was between 5.9 °C and 20.3 °C and averaged 12.9 °C. There was 7.7 hours of sunshine (64%). The average windspeed was 2 Bft (weak wind) and was prevailing from the west-southwest. Source: KNMI
March 29 » The M1911 .45 ACP pistol becomes the official U.S. Army side arm.
May 31 » The RMS Titanic is launched in Belfast, Northern Ireland.
July 7 » The United States, UK, Japan, and Russia sign the North Pacific Fur Seal Convention of 1911 banning open-water seal hunting, the first international treaty to address wildlife preservation issues.
September 23 » Pilot Earle Ovington makes the first official airmail delivery in America under the authority of the United States Post Office Department
October 9 » An accidental bomb explosion triggers the Wuchang Uprising against the Chinese monarchy.
November 17 » Omega Psi Phi fraternity was founded on the campus of Howard University in Washington, D.C.
Day of marriage May 16, 1942
The temperature on May 16, 1942 was between 7.9 °C and 21.5 °C and averaged 14.8 °C. There was 10.9 hours of sunshine (69%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south-southeast. 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 28 » World War II: A British combined force permanently disables the Louis Joubert Lock in Saint-Nazaire in order to keep the German battleship Tirpitz away from the mid-ocean convoy lanes.
April 8 » World War II: Siege of Leningrad: Soviet forces open a much-needed railway link to Leningrad.
June 10 » World War II: The Lidice massacre is perpetrated as a reprisal for the assassination of Obergruppenführer Reinhard Heydrich.
June 23 » World War II: Germany's latest fighter aircraft, a Focke-Wulf Fw 190, is captured intact when it mistakenly lands at RAF Pembrey in Wales.
September 21 » The Boeing B-29 Superfortress makes its maiden flight.
November 22 » World War II: Battle of Stalingrad: General Friedrich Paulus sends Adolf Hitler a telegram saying that the German 6th Army is surrounded.
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/I167859.php : accessed October 24, 2026), "Johannes Merkus (1911-± 1967)".
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