Last Updated: September 13, 2026
Today in History – September 13 has witnessed several significant political, military, scientific, and cultural developments throughout history. For India, the date is particularly important because it marks the beginning of Operation Polo, the military action that led to the integration of Hyderabad State into the Indian Union. Globally, the day is also remembered for the Battle of the Plains of Abraham, a turning point in North American history.
This article covers:
- Major historical events on September 13
- Famous personalities born on September 13
- National and international observances
- Important current affairs and competitive exam facts
Table of Contents
🌟 Top Highlights of September 13
- Launch of Operation Polo (1948): Indian Armed Forces initiated police action to integrate the Princely State of Hyderabad into the Indian Union.
- Martyrdom of Jatin Das (1929): Revolutionary freedom fighter Jatindra Nath Das passed away after a heroic 63-day hunger strike in Lahore Central Jail.
- The Oslo Accords (1993): Israel and the Palestine Liberation Organization (PLO) signed a historic peace agreement at the White House in Washington, D.C.
🗓️ Important Historical Events on September 13
1759 – Battle of Quebec (Battle of the Plains of Abraham)
During the Seven Years’ War, British forces led by General James Wolfe defeated the French army under the Marquis de Montcalm outside Quebec City. Both commanders were fatally wounded during the conflict. The victory paved the way for British dominance in North America and significantly influenced the future formation of Canada.
1929 – Martyrdom of Jatindra Nath Das
Indian revolutionary Jatindra Nath Das succumbed to death on his 63rd day of hunger strike in Lahore Central Jail. He was demanding equal rights and humane conditions for Indian political prisoners alongside Bhagat Singh. His supreme sacrifice triggered nationwide anti-British protests and forced reforms in the colonial prison system.
1948 – Operation Polo Begins
Under the direction of Deputy Prime Minister and Home Minister Sardar Vallabhbhai Patel, the Indian military launched “Operation Polo” (a military police action) led by Major General J.N. Chaudhuri to integrate the princely state of Hyderabad into the Indian Union. The operation led to the surrender of the Nizam on September 17, completing the territorial integration of Hyderabad into India.
1968 – Albania Withdraws from the Warsaw Pact
Albania formally withdrew from the Warsaw Pact, the Soviet-led military alliance. The withdrawal came as a protest against the Soviet-led invasion of Czechoslovakia.Marked a major rift in the Eastern Bloc and demonstrated growing resistance to Soviet hegemony during the Cold War.
1993 – Signing of the Oslo Accords
Prime Minister of Israel Yitzhak Rabin and Palestine Liberation Organization (PLO) Chairman Yasser Arafat shook hands witnessed by U.S. President Bill Clinton on the South Lawn of the White House as they signed the Oslo I Accord. It established a framework for Palestinian self-governance in parts of the West Bank and Gaza Strip through the creation of the Palestinian Authority.
2007 – UN Declaration on the Rights of Indigenous Peoples (UNDRIP)
The United Nations General Assembly adopted the United Nations Declaration on the Rights of Indigenous Peoples (UNDRIP). Established a global framework of minimum standards for the survival, dignity, and well-being of the indigenous peoples of the world.
2008 – Delhi Serial Terror Bombings
A series of synchronized bomb blasts orchestrated by the terrorist group ‘Indian Mujahideen’ struck crowded market areas including Karol Bagh, Connaught Place, and Greater Kailash in New Delhi, killing over 20 people and injuring over 90. Led to major policy overhauls in India’s internal security architecture and counter-terrorism mechanisms.
1788: The United States Confederation Congress established New York City as the temporary national capital of the US.
🎂 Famous Birthdays on September 13
| Year | Personality | Domain / Notable Achievement |
| 1886 | Sir Robert Robinson | British organic chemist; awarded the Nobel Prize in Chemistry (1947) for his research on plant pigments (anthocyanins) and alkaloids. |
| 1916 | Roald Dahl | World-famous British author; wrote iconic children’s classics like Charlie and the Chocolate Factory and Matilda. |
| 1946 | Major Ramaswamy Parameswaran | Heroic Indian Army officer (Mahar Regiment); posthumously awarded the Param Vir Chakra, India’s highest military decoration, for exceptional bravery during ‘Operation Pawan’ (Sri Lanka, 1987). |
| 1960 | Nallari Kiran Kumar Reddy | Indian politician; served as the 16th and final Chief Minister of undivided Andhra Pradesh. |
📌 Other Notable Birthdays: Barbara Bain (1931) – American actress, best known for her starring role in the television series Mission: Impossible, Sajja Jayadev Babu (1940) – Renowned Telugu cartoonist.
🕯️ Notable Death Anniversaries on September 13
- 1929 – Jatindra Nath Das: Indian freedom fighter and revolutionary who sacrificed his life in Lahore Jail after a historic 63-day hunger strike for political prisoners’ rights.
- 1989 – Acharya Atreya (Kilimbi Venkata Narasimhacharyulu): Acclaimed Telugu playwright, poet, and lyricist popularly known as Manasu Kavi (Poet of the Heart) for his deeply emotional poetry and dialogues.
- 2012 – Justice Ranganath Misra: 21st Chief Justice of India (CJI) and the first Chairman of the National Human Rights Commission (NHRC) in 1993.
📌 Other Demises: Italo Svevo (1928) – Italian novelist and playwright, famous for his novel Zeno’s Conscience, Moses Malone (2015) – American Hall of Fame basketball player and three-time NBA Most Valuable Player (MVP).
📢 National & International Days Observed on September 13
- International Programmers’ Day: Proposed by Russian programmers Valentin Balt and Michael Cherviakov; officially recognized by the Russian government in 2009 and adopted globally by the tech community. To honor software developers and programmers who drive digital transformation and global technology infrastructure. Celebrated on the 256th day of the year (September 13 in non-leap years and September 12 in leap years). The number 256 (2⁸) represents the total number of distinct values that can be represented with an 8-bit byte.
- Positive Thinking Day: Observed annually on September 13, Positive Thinking Day promotes optimism, mental well-being, and resilience. It encourages individuals to develop a constructive outlook toward challenges and opportunities in life.
- International Chocolate Day: Many countries celebrate International Chocolate Day on September 13, the birth anniversary of Roald Dahl, whose famous novel Charlie and the Chocolate Factory became a global literary classic.
💡Did You Know?
- Operation Polo Lasted Only Five Days: Operation Polo began on September 13, 1948, and concluded on September 17, resulting in the integration of Hyderabad into the Indian Union.
- Why 256?: International Programmers’ Day is celebrated on the 256th day because 256 is the highest power of 2 that is less than 365, and equals 2^8, the number of values represented by an 8-bit byte.
- Roald Dahl’s Books Have Global Reach: Works such as Matilda, The BFG, and Charlie and the Chocolate Factory have been translated into dozens of languages and sold millions of copies worldwide.
❓Frequently Asked Questions (FAQs)
Q1: What was the code name of the Indian military operation to annex Hyderabad in 1948?
Ans: The code name was Operation Polo (often referred to as Police Action), launched on September 13, 1948.
Q2: Which Indian freedom fighter died on September 13, 1929, after a 63-day hunger strike?
Ans: Jatindra Nath Das (Jatin Das) died in Lahore Central Jail demanding humane treatment for political prisoners.
Q3: Why is International Programmers’ Day observed on the 256th day of the year?
Ans: Because 256 (2^8) is the total number of distinct values represented by an 8-bit byte, a fundamental unit of computing data.
Q4: Which historic peace agreement between Israel and the PLO was signed on September 13, 1993?
Ans: The Oslo I Accord, signed in Washington, D.C., under the mediation of the United States.
Q5: Who was the Param Vir Chakra awardee born on September 13, 1946?
Ans: Major Ramaswamy Parameswaran, who displayed supreme gallantry during Operation Pawan in Sri Lanka in 1987.
Q6: Which famous Telugu lyricist and playwright was honored with the title ‘Manasu Kavi’?
Ans: Acharya Atreya (who passed away on September 13, 1989).
Q7: Who was the last Chief Minister of undivided Andhra Pradesh born on September 13, 1960?
Ans: Nallari Kiran Kumar Reddy.
Q8: Who served as the first Chairman of India’s National Human Rights Commission (NHRC)?
Ans: Justice Ranganath Misra (Former CJI).
Q9: When did the UN General Assembly adopt the Declaration on the Rights of Indigenous Peoples (UNDRIP)?
Ans: On September 13, 2007.
Q10: What event on September 13, 1814, inspired the U.S. National Anthem “The Star-Spangled Banner”?
Ans: The British naval bombardment of Fort McHenry during the Battle of Baltimore.