January 24 » Second Boer War: Boers stop a British attempt to break the Siege of Ladysmith in the Battle of Spion Kop.
February 9 » The Davis Cup competition is established.
March 14 » The Gold Standard Act is ratified, placing the United States currency on the gold standard.
May 18 » The United Kingdom proclaims a protectorate over Tonga.
October 19 » Max Planck discovers Planck's law of black-body radiation.
December 14 » Quantum mechanics: Max Planck presents a theoretical derivation of his black-body radiation law.
Day of marriage May 20, 1926
The temperature on May 20, 1926 was between 6.0 °C and 18.1 °C and averaged 12.2 °C. There was 3.9 hours of sunshine (25%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south-southeast. Source: KNMI
January 8 » Crown Prince Nguyễn Phúc Vĩnh Thuỵ ascends the throne to become the last monarch of Vietnam.
March 14 » The El Virilla train accident, Costa Rica, kills 248 people and wounds another 93 when a train falls off a bridge over the Río Virilla between Heredia and Tibás.
May 18 » Evangelist Aimee Semple McPherson disappears in Venice, California.
September 25 » The international Convention to Suppress the Slave Trade and Slavery is first signed.
November 11 » The United States Numbered Highway System is established.
December 17 » Antanas Smetona assumes power in Lithuania as the 1926 coup d'état is successful.
When copying data from this family tree, please include a reference to the origin: Peter Koldewijn., "Genealogy Koldewijn - van Delden - Solleveld - Miggels - Vellekoop - Jurriens", database, Genealogy Online (https://www.genealogieonline.nl/genealogie-koldewijn/I3267.php : accessed May 14, 2024), "Willem van Maanen (1900-1972)".
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