The temperature on June 12, 1913 was between 4.8 °C and 16.0 °C and averaged 11.6 °C. There was 3.9 mm of rain. There was 9.8 hours of sunshine (59%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west-northwest. Source: KNMI
In The Netherlands , there was from February 12, 1908 to August 29, 1913 the cabinet Heemskerk, with Mr. Th. Heemskerk (AR) as prime minister.
In The Netherlands , there was from August 29, 1913 to September 9, 1918 the cabinet Cort van der Linden, with Mr. P.W.A. Cort van der Linden (liberaal) as prime minister.
February 5 » Greek military aviators, Michael Moutoussis and Aristeidis Moraitinis perform the first naval air mission in history, with a Farman MF.7 hydroplane.
April 24 » The Woolworth Building, a skyscraper in New York City, is opened.
May 30 » The Treaty of London is signed, ending the First Balkan War; Albania becomes an independent nation.
June 1 » The Greek–Serbian Treaty of Alliance is signed, paving the way for the Second Balkan War.
August 16 » Completion of the Royal Navy battlecruiser HMSQueen Mary.
September 23 » Roland Garros of France becomes the first to fly in an airplane across the Mediterranean (from St. Raphael in France to Bizerte, Tunisia).
Day of death January 13, 1951
The temperature on January 13, 1951 was between 2.2 °C and 4.9 °C and averaged 3.9 °C. There was 3.0 mm of rain during 2.1 hours. The partly or heavily clouded was. The average windspeed was 4 Bft (moderate breeze) and was prevailing from the south-southwest. Source: KNMI
From August 7, 1948 till March 15, 1951 the Netherlands had a cabinet Drees - Van Schaik with the prime ministers Dr. W. Drees (PvdA) and Mr. J.R.H. van Schaik (KVP).
In The Netherlands , there was from March 15, 1951 to September 2, 1952 the cabinet Drees I, with Dr. W. Drees (PvdA) as prime minister.
January 4 » Korean War: Chinese and North Korean forces capture Seoul.
January 27 » Nuclear testing at the Nevada Test Site begins with Operation Ranger.
April 11 » Korean War: President Harry Truman relieves General of the Army Douglas MacArthur of overall command in Korea.
May 21 » The opening of the Ninth Street Show, otherwise known as the 9th Street Art Exhibition: A gathering of a number of notable artists, and the stepping-out of the post war New York avant-garde, collectively known as the New York School.
July 16 » King Leopold III of Belgium abdicates in favor of his son, Baudouin I of Belgium.
December 20 » The EBR-1 in Arco, Idaho becomes the first nuclear power plant to generate electricity. The electricity powered four light bulbs.
When copying data from this family tree, please include a reference to the origin: Leen Schaap, "Database Schaap", database, Genealogy Online (https://www.genealogieonline.nl/database-schaap/I4330.php : accessed September 23, 2026), "Helana Sidonia Leopold (1885-1951)".
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