The temperature on September 10, 1915 was between 5.4 °C and 20.1 °C and averaged 13.6 °C. There was 11.1 hours of sunshine (85%). The average windspeed was 2 Bft (weak wind) and was prevailing from the east. Source: KNMI
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.
January 18 » Japan issues the "Twenty-One Demands" to the Republic of China in a bid to increase its power in East Asia.
March 26 » The Vancouver Millionaires win the 1915 Stanley Cup Finals, the first championship played between the Pacific Coast Hockey Association and the National Hockey Association.
April 18 » French pilot Roland Garros is shot down and glides to a landing on the German side of the lines during World War I.
May 7 » The Republic of China accedes to 13 of the 21 Demands, extending the Empire of Japan's control over Manchuria and the Chinese economy.
May 17 » The last British Liberal Party government (led by H. H. Asquith) falls.
November 25 » Albert Einstein presents the field equations of general relativity to the Prussian Academy of Sciences.
Day of death June 15, 1977
The temperature on June 15, 1977 was between 13.8 °C and 21.4 °C and averaged 16.4 °C. There was 2.5 mm of rain during 1.7 hours. There was 1.5 hours of sunshine (9%). The heavily clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the northwest. Source: KNMI
In The Netherlands , there was from Friday, May 11, 1973 to Monday, December 19, 1977 the cabinet Den Uyl, with Drs. J.M. den Uyl (PvdA) as prime minister.
In The Netherlands , there was from Monday, December 19, 1977 to Friday, September 11, 1981 the cabinet Van Agt I, with Mr. A.A.M. van Agt (CDA/KVP) as prime minister.
March 4 » The 1977 Vrancea earthquake in eastern and southern Europe kills more than 1,500, mostly in Bucharest, Romania.
March 9 » The Hanafi Siege: In a thirty-nine-hour standoff, armed Hanafi Muslims seize three Washington, D.C., buildings.
April 7 » German Federal prosecutor Siegfried Buback and his driver are shot by two Red Army Faction members while waiting at a red light.
June 30 » The Southeast Asia Treaty Organization disbands.
July 19 » The world's first Global Positioning System (GPS) signal was transmitted from Navigation Technology Satellite 2 (NTS-2) and received at Rockwell Collins in Cedar Rapids, Iowa, at 12:41a.m. Eastern time (ET).
August 18 » Steve Biko is arrested at a police roadblock under the Terrorism Act No. 83 of 1967 in King William's Town, South Africa. He later dies from injuries sustained during this arrest bringing attention to South Africa's apartheid policies.
When copying data from this family tree, please include a reference to the origin: Hans Weening, "Family tree Weening", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-weening/I112773.php : accessed October 11, 2026), "Ytzen Kootstra (1915-1977)".
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