The temperature on May 21, 1912 was between 8.2 °C and 18.8 °C and averaged 13.3 °C. There was 9.6 hours of sunshine (60%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west. Source: KNMI
January 4 » The Scout Association is incorporated throughout the British Empire by royal charter.
March 30 » Sultan Abd al-Hafid signs the Treaty of Fez, making Morocco a French protectorate.
April 20 » Opening day for baseball's Tiger Stadium in Detroit, and Fenway Park in Boston.
June 8 » Carl Laemmle incorporates Universal Pictures.
October 24 » First Balkan War: The Battle of Kumanovo concludes with the Serbian victory against the Ottoman Empire.
December 28 » The first municipally owned streetcars take to the streets in San Francisco.
Day of marriage May 20, 1942
The temperature on May 20, 1942 was between 6.4 °C and 20.1 °C and averaged 14.4 °C. There was 1.2 mm of rain during 1.4 hours. There was 8.6 hours of sunshine (54%). 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.
January 16 » Crash of TWA Flight 3, killing all 22 aboard, including film star Carole Lombard.
February 9 » World War II: Top United States military leaders hold their first formal meeting to discuss American military strategy in the war.
February 15 » World War II: Fall of Singapore. Following an assault by Japanese forces, the British General Arthur Percival surrenders. About 80,000 Indian, United Kingdom and Australian soldiers become prisoners of war, the largest surrender of British-led military personnel in history.
April 9 » World War II: The Battle of Bataan ends. An Indian Ocean raid by Japan's 1st Air Fleet sinks the British aircraft carrier HMSHermes and the Australian destroyer HMASVampire.
July 27 » World War II: Allied forces successfully halt the final Axis advance into Egypt.
October 9 » Australia's Statute of Westminster Adoption Act 1942 receives royal assent.
Day of death April 25, 2000
The temperature on April 25, 2000 was between 6.8 °C and 20.6 °C and averaged 14.9 °C. There was 5.2 hours of sunshine (36%). The partly clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south-southeast. Source: KNMI
January 31 » Alaska Airlines Flight 261 crash: An MD-83, experiencing horizontal stabilizer problems, crashes in the Pacific Ocean off the coast of Point Mugu, California, killing all 88 aboard.
February 2 » First digital cinema projection in Europe (Paris) realized by Philippe Binant with the DLP CINEMA technology developed by Texas Instruments.
June 22 » Wuhan Airlines Flight 343 is struck by lightning and crashes into Wuhan's Hanyang District, killing 49 people.
August 11 » An air rage incident occurs on board Southwest Airlines Flight 1763 when 19-year-old Jonathan Burton attempts to storm the cockpit, but he is subdued by other passengers and dies from his injuries.
November 13 » Philippine House Speaker Manny Villar passes the articles of impeachment against Philippine President Joseph Estrada.
December 31 » The last day of the 20th Century and 2nd Millennium.
When copying data from this family tree, please include a reference to the origin: Elly Gelderman, "Family tree Gelderman", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-gelderman/I14474.php : accessed February 14, 2026), "Gerrit Portengen (1912-2000)".
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