From Kishore Kumar and India’s Apsara reactor to the French Revolution, World War I, Anne Frank, Burkina Faso, Mars exploration and the Beirut blast.
Today in History on August 4: Important Events, Births, Deaths, GK and MCQs
August 4 has special importance in Indian science and culture. On this date in 1956, Apsara, India’s first nuclear research reactor, achieved criticality at Trombay. The day is also the birth anniversary of legendary singer, actor and filmmaker Kishore Kumar.
In world history, August 4 is linked with the abolition of feudal privileges during the French Revolution, the origin of the U.S. Coast Guard, Britain’s entry into the First World War, the arrest of Anne Frank, the renaming of Upper Volta as Burkina Faso, NASA’s Phoenix Mars mission and the Beirut port explosion.
These notes are prepared for UPSC, APPSC, SSC, Railways, Banking, Defence, Police, State PSC, Group-I, Group-II and other competitive examinations.
August 4 in History: Quick Summary
| Year | Historical Event | Exam Area |
|---|---|---|
| 1789 | The French National Constituent Assembly moved to abolish feudal rights and privileges. | French Revolution |
| 1790 | The United States authorised ten revenue cutters, marking the origin of the U.S. Coast Guard. | Maritime History |
| 1792 | English Romantic poet Percy Bysshe Shelley was born. | World Literature |
| 1875 | Danish author Hans Christian Andersen died. | Literary History |
| 1914 | Britain declared war on Germany and entered World War I. | World War I |
| 1929 | Indian singer, actor and filmmaker Kishore Kumar was born at Khandwa. | Indian Culture |
| 1944 | Anne Frank and the other people in hiding were discovered and arrested in Amsterdam. | World War II |
| 1956 | Apsara, India’s first nuclear research reactor, achieved criticality at Trombay. | Science & Technology |
| 1961 | Barack Obama, later the 44th U.S. President, was born in Hawaii. | World Personalities |
| 1984 | Upper Volta was renamed Burkina Faso. | African Geography |
| 2007 | NASA launched the Phoenix Mars Lander. | Space Science |
| 2020 | A massive explosion struck the Port of Beirut in Lebanon. | Contemporary History |
August 4 in Indian History
Birth of Kishore Kumar
Kishore Kumar was born as Abhas Kumar Ganguly on August 4, 1929, at Khandwa in present-day Madhya Pradesh. He became one of Indian cinema’s most versatile artists, working as a playback singer, actor, composer, lyricist, writer, producer and director.
His singing career crossed linguistic and generational boundaries. He was especially admired for his expressive voice, comic timing, rhythmic inventiveness and distinctive use of yodelling. His collaborations with composers such as S. D. Burman, R. D. Burman, Salil Chowdhury, Kalyanji–Anandji and Bappi Lahiri produced many enduring songs.
Apsara Achieved Criticality
At 15.45 hrs on August 4, 1956, the Apsara research reactor achieved criticality at Trombay. It was India’s first nuclear research reactor and the first research reactor in Asia to reach criticality.
Apsara was a swimming-pool-type thermal reactor with a maximum thermal power of 1 MW. It supported research, reactor-physics experiments, radioisotope production, neutron-activation studies and the training of scientists and engineers. The achievement became a major milestone in India’s peaceful atomic-energy programme under the leadership of Dr. Homi J. Bhabha.
Major World Historical Events on August 4
Abolition of Feudal Privileges in France
During the celebrated Night of August 4, the French National Constituent Assembly proclaimed the abolition of feudal rights and several privileges enjoyed by the nobility, clergy and territorial bodies.
The decisions formed an important step in dismantling the legal structure of the Ancien Régime and advancing the revolutionary principle of equality before the law. Some obligations were abolished immediately, while others initially remained subject to compensation or later legislation.
Origin of the United States Coast Guard
On August 4, 1790, the United States Congress authorised the construction of ten revenue cutters based on a proposal associated with Treasury Secretary Alexander Hamilton. The vessels were intended to enforce tariff and trade laws and prevent smuggling.
The force became known as the Revenue Cutter Service and is regarded as the principal institutional predecessor of the modern U.S. Coast Guard. The present Coast Guard name dates from 1915, when the Revenue Cutter Service merged with the U.S. Life-Saving Service.
Britain Entered the First World War
Great Britain declared war on Germany at 23.00 hrs on August 4, 1914. The declaration followed Germany’s invasion of neutral Belgium and the expiry of a British ultimatum demanding respect for Belgian neutrality.
Britain’s entry also drew the wider British Empire into the conflict, including India. More than one million Indian soldiers and labourers served overseas during the war, making the event important for both world history and modern Indian history.
Anne Frank and the Secret Annex Occupants Were Arrested
On August 4, 1944, police officers raided the premises at Prinsengracht 263 in Amsterdam and discovered the eight Jewish people hiding in the Secret Annex, including Anne Frank and her family.
They had lived in hiding for more than two years during the Nazi occupation of the Netherlands. Anne’s diary papers were preserved by Miep Gies and Bep Voskuijl. Otto Frank, Anne’s father, was the only one of the eight people in hiding to survive the Holocaust.
Upper Volta Renamed Burkina Faso
On August 4, 1984, the West African state of Upper Volta adopted the name Burkina Faso under President Thomas Sankara. The new name combined words from local languages and is commonly translated as “land of upright” or “honourable people.”
Burkina Faso is a landlocked country in West Africa. Its capital is Ouagadougou, and it shares borders with Mali, Niger, Benin, Togo, Ghana and Côte d’Ivoire.
NASA Launched the Phoenix Mars Lander
NASA launched the Phoenix Mars Lander on August 4, 2007, aboard a Delta II rocket from Cape Canaveral. The spacecraft landed in the Martian northern plains on May 25, 2008.
Phoenix used a robotic arm to examine soil and subsurface material in the Martian arctic. The mission confirmed the presence of water ice beneath the surface and studied the region’s climate, soil chemistry and potential habitability.
Beirut Port Explosion
On August 4, 2020, a massive explosion at the Port of Beirut devastated large parts of Lebanon’s capital. The disaster caused extensive loss of life, thousands of injuries, large-scale displacement and severe damage to homes, businesses, hospitals and essential infrastructure.
Investigations and international reports connected the blast to a large quantity of ammonium nitrate stored at the port. The event became one of the most destructive non-nuclear explosions in modern urban history and intensified Lebanon’s existing economic, political and public-health crises.
Important Days and Observances on August 4
U.S. Coast Guard Birthday
The United States Coast Guard marks August 4 as its official birthday because Congress authorised ten revenue cutters on this date in 1790. The service’s modern duties include maritime safety, security, law enforcement, search and rescue, environmental protection and defence readiness.
World Breastfeeding Week 2026
August 4 falls within World Breastfeeding Week, observed from August 1 to 7 with support from WHO, UNICEF, health ministries and civil-society partners. The 2026 theme is “Breastfeeding for a sustainable start in life: strengthen what works.”
Important Births and Deaths on August 4
Percy Bysshe Shelley
Percy Bysshe Shelley was a major English Romantic poet. His notable works include Ozymandias, Ode to the West Wind, Prometheus Unbound and Adonais.
Kishore Kumar
Kishore Kumar was a legendary Indian playback singer, actor, composer and filmmaker whose music remains influential across Indian languages and generations.
Barack Obama
Barack Obama was born in Hawaii on August 4, 1961. He served as the 44th President of the United States from 2009 to 2017 and was the first African American to hold the office.
Hans Christian Andersen
Danish author Hans Christian Andersen is remembered for literary fairy tales such as The Little Mermaid, The Emperor’s New Clothes, The Ugly Duckling and The Snow Queen.
Static GK Connections for Competitive Exams
1. Apsara Research Reactor
- Location: Trombay, Mumbai
- Date of criticality: August 4, 1956
- Type: Swimming-pool-type thermal reactor
- Maximum thermal power: 1 MW
- Importance: India’s first research reactor and the first in Asia to achieve criticality
2. First World War
- Period: 1914–1918
- Immediate trigger: Assassination of Archduke Franz Ferdinand
- Britain entered: August 4, 1914
- Reason connected with entry: German violation of Belgian neutrality
- Peace settlement: Treaty of Versailles, 1919
3. Anne Frank
- City of hiding: Amsterdam
- Hiding place: Secret Annex, Prinsengracht 263
- Date of arrest: August 4, 1944
- Diary first published: 1947
- Only survivor among the eight: Otto Frank
4. Burkina Faso
- Former name: Upper Volta
- New name adopted: August 4, 1984
- Capital: Ouagadougou
- Region: West Africa
- Status: Landlocked country
5. Phoenix Mars Lander
- Launch: August 4, 2007
- Landing: May 25, 2008
- Target: Martian arctic
- Mission type: Stationary lander
- Major result: Confirmed subsurface water ice
Memory Trick for August 4
Remember: “F–C–K–A–A–B–B–P–B”
- F – Feudal privileges abolished in France, 1789
- C – Coast Guard origin, 1790
- K – Kishore Kumar born, 1929
- A – Anne Frank arrested, 1944
- A – Apsara criticality, 1956
- B – Barack Obama born, 1961
- B – Burkina Faso renamed, 1984
- P – Phoenix launched, 2007
- B – Beirut explosion, 2020
Easy sentence: “France’s Coast Celebrates Kishore, Anne, Apsara, Barack, Burkina, Phoenix and Beirut.”
Do Not Confuse
1. Apsara and Apsara-U
The original Apsara achieved criticality in 1956. Apsara-U is the upgraded research reactor that later became operational with modernised systems and higher performance.
2. Criticality and Nuclear Explosion
Reactor criticality means that a controlled nuclear chain reaction is self-sustaining. It does not mean that the reactor has exploded or become uncontrolled.
3. Britain’s Entry into World War I and World War II
Britain entered World War I on August 4, 1914. Britain and France declared war on Germany in World War II on September 3, 1939, after Germany invaded Poland.
4. Anne Frank’s Arrest and Diary Publication
Anne Frank was arrested on August 4, 1944. Her diary was first published in Dutch in 1947, after the war.
5. Upper Volta and the Volta River
Upper Volta was renamed Burkina Faso in 1984. The former name referred to branches of the Volta River system, not to the modern country of Ghana alone.
August 4 Quick Revision
- Feudal rights and privileges were targeted by the French Assembly on the night of August 4, 1789.
- The U.S. Revenue Cutter Service originated on August 4, 1790.
- Percy Bysshe Shelley was born on August 4, 1792.
- Hans Christian Andersen died on August 4, 1875.
- Britain declared war on Germany on August 4, 1914.
- Kishore Kumar was born at Khandwa on August 4, 1929.
- Anne Frank and the Secret Annex occupants were arrested on August 4, 1944.
- Apsara achieved criticality at Trombay on August 4, 1956.
- Barack Obama was born in Hawaii on August 4, 1961.
- Upper Volta became Burkina Faso on August 4, 1984.
- NASA launched the Phoenix Mars Lander on August 4, 2007.
- The Beirut port explosion occurred on August 4, 2020.
- August 4 is recognised as the U.S. Coast Guard’s birthday.
- August 4 falls within World Breastfeeding Week, observed from August 1 to 7.
10 MCQs
1. Which reactor achieved criticality on August 4, 1956, becoming India’s first nuclear research reactor?
BARC records August 4, 1956, as Apsara’s date of criticality. It was a swimming-pool-type research reactor and a landmark in India’s atomic-energy programme. Read the complete fact.
2. Kishore Kumar was born with which name?
The celebrated singer, actor, composer and filmmaker was born Abhas Kumar Ganguly at Khandwa on August 4, 1929. Read the complete fact.
3. The “Night of August 4” in 1789 is associated with which development?
The French National Constituent Assembly moved to abolish feudal rights and several privileges during the revolutionary session of August 4–5, 1789. Read the complete fact.
4. The modern U.S. Coast Guard traces its principal origin to which service established in 1790?
Congress authorised ten cutters on August 4, 1790, to enforce tariff and trade laws and prevent smuggling. Read the complete fact.
5. Britain declared war on which country on August 4, 1914?
Britain entered the First World War after Germany violated Belgian neutrality and did not satisfy the British ultimatum. Read the complete fact.
6. Anne Frank and the other people in hiding were arrested in which city?
They were discovered in the Secret Annex at Prinsengracht 263 in Amsterdam on August 4, 1944. Read the complete fact.
7. Who was born in Hawaii on August 4, 1961?
Barack Obama later served as the 44th President of the United States from 2009 to 2017. Read the complete fact.
8. Upper Volta adopted which new name on August 4, 1984?
The name Burkina Faso is commonly explained as the “land of upright” or “honourable people,” drawing from local languages. Read the complete fact.
9. NASA’s Phoenix mission was designed to study which planet?
Phoenix landed in the Martian arctic in 2008 and confirmed water ice beneath the surface. Read the complete fact.
10. The major explosion of August 4, 2020, occurred at the port of which city?
The Port of Beirut explosion caused widespread casualties, displacement and severe damage across Lebanon’s capital. Read the complete fact.
Frequently Asked Questions
1. Why is August 4 important in Indian science history?
Apsara, India’s first nuclear research reactor and the first research reactor in Asia to achieve criticality, went critical at Trombay on August 4, 1956.
2. Which famous Indian singer was born on August 4, 1929?
Kishore Kumar, born Abhas Kumar Ganguly at Khandwa, was born on August 4, 1929.
3. What happened in France on the night of August 4, 1789?
The French National Constituent Assembly proclaimed the abolition of feudal rights and several privileges during the French Revolution.
4. Why is August 4 regarded as the birthday of the U.S. Coast Guard?
On August 4, 1790, the United States authorised ten revenue cutters, creating the Revenue Cutter Service, the principal predecessor of the modern Coast Guard.
5. When did Britain enter the First World War?
Britain declared war on Germany at 11 p.m. on August 4, 1914, after Germany failed to respect Belgian neutrality.
6. What happened to Anne Frank on August 4, 1944?
Anne Frank and the other people hiding in the Secret Annex were discovered and arrested in Amsterdam.
7. Which former U.S. President was born on August 4, 1961?
Barack Obama, the 44th President of the United States, was born in Hawaii on August 4, 1961.
8. What was Upper Volta renamed in 1984?
Upper Volta was renamed Burkina Faso on August 4, 1984.
9. Which NASA mission launched on August 4, 2007?
NASA launched the Phoenix Mars Lander, which later confirmed water ice beneath the Martian surface.
10. What major disaster occurred in Beirut on August 4, 2020?
A massive explosion at the Port of Beirut caused extensive loss of life, injuries, displacement and damage to health infrastructure.
Related History and GK Posts
- August 3 in History: Important Events, GK and MCQs
- August 2 in History: Important Events, GK and MCQs
- August 1 in History: Important Events, GK and MCQs
- Explore All Today in History Articles
- Static GK for Competitive Exams
Official and Reliable Sources
- Bhabha Atomic Research Centre – Apsara Research Reactor
- BARC – Fifty Years of Apsara
- DD News – Kishore Kumar Birth Anniversary
- French National Assembly – Night of August 4
- U.S. Coast Guard Historian’s Office – Coast Guard Origins
- Imperial War Museums – Outbreak on August 4, 1914
- UK Parliament – Britain’s Declaration of War
- Anne Frank House – Arrest of the People in Hiding
- Archived White House – Barack Obama Biography
- U.S. Department of State Archive – Burkina Faso Name Change
- NASA – Mars Phoenix Mission
- World Health Organization – Beirut Explosion 2020
- WHO – World Breastfeeding Week 2026
- Poetry Foundation – Percy Bysshe Shelley
- Hans Christian Andersen Centre – Biography
Conclusion
August 4 connects India’s scientific and cultural heritage with the French Revolution, maritime institutions, the First and Second World Wars, African geography, global leadership, space exploration and contemporary disaster history.
For competitive examinations, remember the strongest links: Kishore Kumar—1929; Britain entered World War I—1914; Anne Frank arrested—1944; Apsara criticality—1956; Burkina Faso renamed—1984; Phoenix launch—2007.
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