The temperature on September 3, 1915 was between 7.0 °C and 16.3 °C and averaged 11.1 °C. There was 1.3 hours of sunshine (10%). The average windspeed was 2 Bft (weak wind) and was prevailing from the south-southeast. 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 13 » The 6.7 Mw Avezzano earthquake shakes the Province of L'Aquila in Italy with a maximum Mercalli intensity of XI (Extreme), killing between 29,978–32,610.
March 18 » World War I: During the Battle of Gallipoli, three battleships are sunk during a failed British and French naval attack on the Dardanelles.
March 20 » Albert Einstein publishes his general theory of relativity.
April 24 » The arrest of 250 Armenian intellectuals and community leaders in Istanbul marks the beginning of the Armenian Genocide.
June 5 » Denmark amends its constitution to allow women's suffrage.
July 5 » The Liberty Bell leaves Philadelphia by special train on its way to the Panama–Pacific International Exposition. This is the last trip outside Philadelphia that the custodians of the bell intend to permit.
Day of marriage April 28, 1937
The temperature on April 28, 1937 was between 2.9 °C and 13.5 °C and averaged 8.5 °C. There was 4.1 hours of sunshine (28%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the north. Source: KNMI
January 19 » Howard Hughes sets a new air record by flying from Los Angeles to New York City in 7 hours, 28 minutes, 25 seconds.
February 19 » Yekatit 12: During a public ceremony at the Viceregal Palace (the former Imperial residence) in Addis Ababa, Ethiopia, two Ethiopian nationalists of Eritrean origin attempt to kill viceroy Rodolfo Graziani with a number of grenades.
June 15 » A German expedition led by Karl Wien loses sixteen members in an avalanche on Nanga Parbat. It is the worst single disaster to occur on an 8000m peak.
June 30 » The world's first emergency telephone number, 999, is introduced in London.
September 10 » Nine nations attend the Nyon Conference to address international piracy in the Mediterranean Sea.
December 16 » Theodore Cole and Ralph Roe attempt to escape from the American federal prison on Alcatraz Island in San Francisco Bay; neither is ever seen again.
Day of death October 9, 1979
The temperature on October 9, 1979 was between 13.8 °C and 22.6 °C and averaged 17.3 °C. There was 0.2 mm of rain during 0.7 hours. There was 6.6 hours of sunshine (59%). The partly clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the south-southeast. Source: KNMI
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.
February 1 » Iranian Ayatollah Ruhollah Khomeini returns to Tehran after nearly 15 years of exile.
July 9 » A car bomb destroys a Renault motor car owned by "Nazi hunters" Serge and Beate Klarsfeld outside their home in France in an unsuccessful assassination attempt.
October 18 » The Federal Communications Commission (FCC) begins allowing people to have home satellite earth stations without a federal government license.
October 21 » Moshe Dayan resigns from the Israeli government because of strong disagreements with Prime Minister Menachem Begin over policy towards the Arabs.
November 20 » Grand Mosque seizure: About 200 Sunni Muslims revolt in Saudi Arabia at the site of the Kaaba in Mecca during the pilgrimage and take about 6000 hostages. The Saudi government receives help from Pakistani special forces to put down the uprising.
December 12 » The 8.2 Mw Tumaco earthquake shakes Colombia and Ecuador with a maximum Mercalli intensity of IX (Violent), killing 300–600, and generating a large tsunami.
When copying data from this family tree, please include a reference to the origin: Michelle, "Family tree Gravekamp", database, Genealogy Online (https://www.genealogieonline.nl/gravekamp-stamboom/I345.php : accessed January 15, 2026), "Gerardus Franciscus Gravekamp (1915-1979)".
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