The temperature on February 29, 1928 was between 0.6 °C and 7.2 °C and averaged 3.7 °C. There was 2.0 hours of sunshine (18%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the east-southeast. Source: KNMI
January 7 » A disastrous flood of the River Thames kills 14 people and causes extensive damage to much of riverside London.
January 31 » Leon Trotsky is exiled to Alma-Ata.
March 12 » In California, the St. Francis Dam fails; the resulting floods kill 431 people.
July 7 » Sliced bread is sold for the first time (on the inventor's 48th birthday) by the Chillicothe Baking Company of Chillicothe, Missouri.
August 27 » The Kellogg–Briand Pact outlawing war is signed by fifteen nations. Ultimately sixty-one nations will sign it.
September 1 » Ahmet Zogu declares Albania to be a monarchy and proclaims himself king.
Day of death May 1, 1961
The temperature on May 1, 1961 was between 2.9 °C and 15.8 °C and averaged 9.9 °C. There was 0.4 mm of rain during 0.1 hours. There was 2.0 hours of sunshine (13%). The partly or heavily clouded was. The average windspeed was 1 Bft (weak wind) and was prevailing from the south-southwest. Source: KNMI
February 16 » Explorer program: Explorer 9 (S-56a) is launched.
March 15 » At the 1961 Commonwealth Prime Ministers' Conference, South Africa announces that it will withdraw from the Commonwealth when the South African Constitution of 1961 comes into effect.
April 23 » Algiers putsch by French generals.
June 19 » Kuwait declares independence from the United Kingdom.
August 1 » U.S. Defense Secretary Robert McNamara orders the creation of the Defense Intelligence Agency (DIA), the nation's first centralized military espionage organization.
October 30 » The Soviet Union detonates the Tsar Bomba, the most powerful explosive device ever detonated.
When copying data from this family tree, please include a reference to the origin: Hendrik Dreyer, "Dreyer Tree", database, Genealogy Online (https://www.genealogieonline.nl/dreyer-tree/I12043.php : accessed January 18, 2026), "Helena Barendina de Wit (1903-1961)".
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