The temperature on April 21, 1931 was between 2.6 °C and 11.6 °C and averaged 6.7 °C. There was 7.2 hours of sunshine (51%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the north-northeast. Source: KNMI
In The Netherlands , there was from August 10, 1929 to May 26, 1933 the cabinet Ruys de Beerenbrouck III, with Jonkheer mr. Ch.J.M. Ruys de Beerenbrouck (RKSP) as prime minister.
January 21 » Sir Isaac Isaacs is sworn in as the first Australian-born Governor-General of Australia.
March 5 » The British Raj: Gandhi–Irwin Pact is signed.
May 14 » Five unarmed civilians are killed in the Ådalen shootings, as the Swedish military is called in to deal with protesting workers.
July 1 » Wiley Post and Harold Gatty become the first people to circumnavigate the globe in a single-engined monoplane aircraft.
November 7 » The Chinese Soviet Republic is proclaimed on the anniversary of the October Revolution.
November 22 » Al-Mina'a SC is founded in Iraq.
Day of marriage July 6, 1950
The temperature on July 6, 1950 was between 14.2 °C and 21.0 °C and averaged 16.7 °C. There was 1.7 mm of rain during 0.8 hours. There was 3.5 hours of sunshine (21%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west-northwest. 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).
January 13 » Finland forms diplomatic relations with the People's Republic of China.
January 21 » American lawyer and government official Alger Hiss is convicted of perjury.
January 26 » The Constitution of India comes into force, forming a republic. Rajendra Prasad is sworn in as its first President of India. Observed as Republic Day in India.
June 25 » The Korean War begins with the invasion of South Korea by North Korea.
August 12 » Korean War: Bloody Gulch massacre: 75 American POWs are massacred by North Korean Army.
September 24 » The eastern United States is covered by a thick haze from the Chinchaga fire in western Canada.
Day of death April 4, 1991
The temperature on April 4, 1991 was between 2.3 °C and 12.9 °C and averaged 7.9 °C. There was 0.5 mm of rain during 3.6 hours. There was 7.1 hours of sunshine (54%). The partly clouded was. The average windspeed was 4 Bft (moderate breeze) and was prevailing from the south. Source: KNMI
In The Netherlands , there was from Tuesday, November 7, 1989 to Monday, August 22, 1994 the cabinet Lubbers III, with Drs. R.F.M. Lubbers (CDA) as prime minister.
February 23 » In Thailand, General Sunthorn Kongsompong leads a bloodless coup d'état, deposing Prime Minister Chatichai Choonhavan.
March 3 » An amateur video captures the beating of Rodney King by Los Angeles police officers.
March 15 » Cold War: The Treaty on the Final Settlement with Respect to Germany comes into effect, granting full sovereignty to the Federal Republic of Germany.
August 22 » Iceland is the first nation in the world to recognize the independence of the Baltic states.
October 4 » The Protocol on Environmental Protection to the Antarctic Treaty is opened for signature.
November 14 » Cambodian Prince Norodom Sihanouk returns to Phnom Penh after thirteen years of exile.
When copying data from this family tree, please include a reference to the origin: Hans Opperman, "Family tree Opperman", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-opperman/I3758.php : accessed January 8, 2026), "Maria Anna Frederica "Ria" Kok (1931-1991)".
Copy warning
Genealogical publications are copyright protected. Although data is often retrieved from public archives, the searching, interpreting, collecting, selecting and sorting of the data results in a unique product. Copyright protected work may not simply be copied or republished.
Please stick to the following rules
Request permission to copy data or at least inform the author, chances are that the author gives permission, often the contact also leads to more exchange of data.
Do not use this data until you have checked it, preferably at the source (the archives).
State from whom you have copied the data and ideally also his/her original source.