The temperature on April 10, 1912 was between 0.4 °C and 8.3 °C and averaged 3.2 °C. There was 13.6 mm of rain. There was 5.9 hours of sunshine (44%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the west-northwest. Source: KNMI
January 5 » The 6th All-Russian Conference of the Russian Social Democratic Labour Party (Prague Party Conference) opens. In the course of the conference, Vladimir Lenin and his supporters break from the rest of the party to form the Bolshevik movement.
February 14 » Arizona is admitted as the 48th and the last contiguous U.S. state.
April 10 » RMS Titanic sets sail from Southampton, England on her maiden and only voyage.
May 18 » The first Indian film, Shree Pundalik by Dadasaheb Torne, is released in Mumbai.
September 2 » Arthur Rose Eldred is awarded the first Eagle Scout award of the Boy Scouts of America.
December 28 » The first municipally owned streetcars take to the streets in San Francisco.
Day of death December 10, 1960
The temperature on December 10, 1960 was between 0.4 °C and 2.6 °C and averaged 1.5 °C. There was 4.6 mm of rain during 11.6 hours. The almost completely overcast was. The average windspeed was 4 Bft (moderate breeze) and was prevailing from the north-northeast. Source: KNMI
March 22 » Arthur Leonard Schawlow and Charles Hard Townes receive the first patent for a laser.
April 26 » Forced out by the April Revolution, President of South Korea Syngman Rhee resigns after 12 years of dictatorial rule.
July 20 » Ceylon (now Sri Lanka) elects Sirimavo Bandaranaike Prime Minister, the world's first elected female head of government.
August 6 » Cuban Revolution: Cuba nationalizes American and foreign-owned property in the nation.
August 11 » Chad declares independence.
September 2 » The first election of the Parliament of the Central Tibetan Administration, in history of Tibet. The Tibetan community observes this date as Democracy Day.
When copying data from this family tree, please include a reference to the origin: Hendrik de Graaf, "Family tree Plugboer", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-plugboer/I9870.php : accessed February 1, 2026), "Anna de Graaf (1912-1960)".
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