1648, 6th April: Construction of the Lal Kila (Red Fort) completed.
1896, 6th April: The modern Olympic Games began in Athens, Greece. The game was banned for 1500 years due to a ban imposed by the Greek emperor Theodosius I.
1917, 6th April: World War I, US declares war on Germany.
1930, 6th April: After the famous Dandi March, Gandhiji started the Salt Satyagraha.
1965, 6th April: The US launched the Early Bird satellite for commercial use.
1966, 6th April: Indian swimmer Mihir Sen swam across the Strait of Palak connecting India and Pakistan.
1980, 6th April: The Bharatiya Janata Party (BJP) formed and Atal Bihari Vajpayee became its first president.
1998, 6th April: Testosterone, a drug that cures breast cancer, was released. The side effects of this drug increase the risk of cervical cancer, it was announced.
1998, 6th April: Pakistan successfully tested medium-range ballistic missiles that can easily reach India.
1483: Raphael, an Italian painter, and architect.
1773: James Mill, a Scottish historian, economist, political theorist, and philosopher.
1886: Mir Osman Ali Khan, the last Nizam of the Princely State of Hyderabad.
1890: Jigar Moradabadi, an Indian Urdu poet and ghazal writer.
1931: Suchitra Sen, an Indian film actress.
1956: Dilip Vengsarkar, a former Indian cricketer and a cricket administrator.
1973: Prashanth Thiagarajan, an Indian actor, and businessman.
1520: Raphael, an Italian painter, and architect.
1199: Richard I, King of England.
1983: Jayanto Nath Chaudhuri, a General Officer in the Indian Army. He served as the 6th Chief of Army Staff of India.
1989: Pannalal Nanalal Patel, an Indian author known for his contributions to Gujarati literature.
1992: Isaac Asimov, an American writer, and professor of biochemistry.
2001: Chaudhary Devi Lal, an Indian politician who served as 6th Deputy Prime Minister of India.
6-April-1606
Khusru Prince and his father Jahangir rebelled and fled from Agra.
6-April-1664
Abraham Shipmen died without taking charge of Bombay Islands from Portuguese.
6-April-1664
Harkhishan Singh, Sikh Guru, died.
6-April-1773
James Mill of Scotland, great philosopher and historian (British India), was born.
6-April-1897
Gandhiji submits long memorial to Chamberlain, Secretary of State for Colonies, regarding landing incidents background. Carries on programme of petitioning local and Imperial authorities, as well as of communicating with British and Indian public men regarding discriminatory laws.
6-April-1906
Kaveri Bhaskar Karve, teacher and author, was born at Harnai, Ratnagiri, .
6-April-1919
Mahatma Gandhi declared an All India Strike against the Rollatt Act .This was the first strike.
6-April-1930
Mahatma Gandhi picked up a lump of natural salt for breaking the 'Salt Law'. He was arrested at Dandi. This movement gathered strength and within a month about one lakh people were sent to jail. This violation of Salt Law was the second great step in India's Freedom Movement.
6-April-1934
Nilkanth Yashwant Khadilkar, editor of Marathi daily newspaper, was born.
6-April-1942
During the second world war, for the first time Japanese air-bombers attacked India, and the mainland took place at Visakhapatnam.
6-April-1955
Vinayak Maharaj Masurkar, great Samarth Saint, died.
6-April-1956
Dilip Balwant Vengsarkar, cricketer (prolific Indian batsman 1976-92),was born in Rajapur, Maharashtra. He has received Arjun Award (1981) and Padmashree (1987).
6-April-1966
Mihir Sen, first Indian swimmer to achieve many remarkable feats, swam across the 'Palk Strait' measuring 22 kms between India & Sri Lanka (Cylone).
6-April-1968
Indira Gandhi,PM, inaugurated the construction of Bokaro Steel Plant.
6-April-1978
Karnataka beat Uttar Pradesh by an innings and 193 runs to win Ranji Trophy.
6-April-1980
Janata Party splits again; members with RSS links form the Bhartiya Janata Party (BJP). A. B. Vajpayee becomes its first President.
6-April-1985
Bombay beat Delhi by 90 runs to win the Ranji Trophy final.
6-April-1990
Bhalchandra Tryambak Randive, senior Marxist leader and founder President of WTU, died.
6-April-1992
Nagpur edition of Marathi newspaper 'Loksatta' was started.
6-April-1993
Divya Bharati, famous Hindi film actress (Deewana), died at the age of 19.
6-April-1997
Gen. Kofi Annan,UN Secretary, arrives in New Delhi for NAM conference.
6-April-1998
India resumes export of marine products to the European Union; 25 units have been approved by the Export Inspection Council for exporting to EU countries.
6-April-1998
The Sonia Gandhi era begins in the Congress(I) with a special AICC session ratifying the decision of the CWC appointing her president in place of Sitaram Kesri.
6-April-2000
The Government permits use of LPG as auto fuel.