The temperature on April 6, 1952 was between 3.1 °C and 13.4 °C and averaged 8.5 °C. There was 4.4 mm of rain during 4.8 hours. There was 6.3 hours of sunshine (47%). The partly or heavily clouded was. The average windspeed was 5 Bft (very strong wind) and was prevailing from the south. Source: KNMI
March 20 » The US Senate ratifies the Security Treaty Between the United States and Japan.
April 28 » The Treaty of San Francisco comes into effect, restoring Japanese sovereignty and ending its state of war with most of the Allies of World War II.
May 7 » The concept of the integrated circuit, the basis for all modern computers, is first published by Geoffrey Dummer.
July 19 » Opening of the Summer Olympics in Helsinki, Finland.
July 21 » The 7.3 Mw Kern County earthquake strikes Southern California with a maximum Mercalli intensity of XI (Extreme), killing 12 and injuring hundreds.
November 25 » Agatha Christie's murder-mystery play The Mousetrap opens at the Ambassadors Theatre in London. It will become the longest continuously-running play in history.
When copying data from this family tree, please include a reference to the origin: Rebecca Gibson, "Hamerslag Family Tree", database, Genealogy Online (https://www.genealogieonline.nl/hamerslag-family-tree/P764.php : accessed May 10, 2025), "Margaret Eleanor Bateman (1888-1952)".
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