The temperature on March 23, 1911 was between 3.0 °C and 9.9 °C and averaged 5.6 °C. There was 5.5 hours of sunshine (45%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the northeast. Source: KNMI
January 21 » The first Monte Carlo Rally takes place.
March 29 » The M1911 .45 ACP pistol becomes the official U.S. Army side arm.
July 4 » A massive heat wave strikes the northeastern United States, killing 380 people in eleven days and breaking temperature records in several cities.
August 14 » United States Senate leaders agree to rotate the office of President pro tempore of the Senate among leading candidates to fill the vacancy left by William P. Frye's death.
September 18 » Russian Premier Pyotr Stolypin is shot at the Kiev Opera House.
November 5 » After declaring war on the Ottoman Empire on September 29, 1911, Italy annexes Tripoli and Cyrenaica.
Day of marriage September 20, 1941
The temperature on September 20, 1941 was between 7.5 °C and 19.3 °C and averaged 13.5 °C. There was 10.5 hours of sunshine (85%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the east. Source: KNMI
In The Netherlands , there was from September 3, 1940 to July 27, 1941 the cabinet Gerbrandy I, with Prof. dr. P.S. Gerbrandy (ARP) as prime minister.
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: Britain's Mediterranean Fleet sinks three heavy cruisers and two destroyers of Italy's Regia Marina.
October 9 » A coup in Panama declares Ricardo Adolfo de la Guardia Arango the new president.
November 14 » World War II: In Slonim, German forces engaged in Operation Barbarossa murder 9,000 Jews in a single day.
November 25 » HMSBarham is sunk by a German torpedo during World War II.
December 8 » World War II: U.S. President Franklin D. Roosevelt declares December 7 to be "a date which will live in infamy", after which the U.S. declares war on Japan.
December 9 » World War II: China, Cuba, Guatemala, and the Philippine Commonwealth declare war on Germany and Japan.
When copying data from this family tree, please include a reference to the origin: J. van Broekhoven, "Database Van Broekhoven", database, Genealogy Online (https://www.genealogieonline.nl/database-van-broekhoven/I69078.php : accessed February 10, 2026), "Petrus Johannes Josephus Klerks (1911-)".
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