A supernova exploded in the Crab Nebula.
22 April: What Happened On This Day in History
Curated historical timeline of momentous political pacts, freedom struggle uprisings, constitutional developments, scientific breakthroughs, and prominent birthdays recorded on 22 April.
Portuguese sailor Pedro Alvares Cabral discovered Brazil.
The Capture of Ormuz by the East India Company ends Portuguese control of Hormuz Island.
German army used poisonous gas chlorine for the first time in World War I.
Subhas Chandra Bose, resigned from the Indian Civil Service, and formed South Calcutta Sevak Samiti after returning to India. He was also arrested for carrying out our freedom movement.
The Telecommunication Training Centre was established at Jabalpur.
Admiral R. D. Katari became the first Chief in the Independent Indian Navy.
Millions of Americans celebrated Earth Day for the first time to increase environmental awareness around the world.
The first optical fiber used to introduce telephone traffic.
Chabbildas Mehta was sworn in as Gujarat CM.
India and Bangladesh resolve to work together to ''root out terrorism'', push bilateral trade and harness river waters of the region.
Lok Sabha passes the 1999-2000 general budget through voice vote but without a debate and without amendments.
Praveen Mahajan fired at BJP leader Pramod Mahajan over a family dispute.
Immanuel Kant, a German philosopher.
Dalhousie, governor-general of India, was born.
Vladimir IIyich Lenin, a revolutionary freedom fighter and politician was born at Simbrisk, Volga.
J. Robert Oppenheimer, an American theoretical physicist, and professor of physics.
Ramnath Goenka, an Indian newspaper publisher.
Baldev Raj Chopra, Indian director and producer (d. 2008)
Hem Barua, famous Assami and English litterateur was born.
Kanan Devi, an Indian actress, and singer.
Babani Sheshagiri Pai, social worker and journalist, was born at Ankola in Karnataka,
Robert Wade-Gery, English diplomat, British High Commissioner to India (d. 2015)
Bhama Srinivasan, Indian-American mathematician and academic
Gopalkrishna Gandhi, Indian civil servant and politician, 22nd Governor of West Bengal
Sumeet Raghavan, an Indian film and television actor.
● 1974: Chetan Bhagat, an Indian author, and columnist.
James Princes, British research scientist and archaeologist, passed away.
Henry Royce, co-founder of Rolls-Royce Limited.
Richard Nixon, the 37th president of the United States.
Hiteshwar Saikia, chief minister of Assam (1991-96), passed away at the age of 62 years, and Dr Bhumidhar Barman became the new CM.
Bhaktavar Lentin (72), former Judge of the Bombay High Court, died
Balwant Gargi, an Indian Punjabi language dramatist, theatre director, novelist, and short-story writer.
Lalgudi Jayaraman, an Indian Carnatic violinist, vocalist, and composer.
Jagdish Sharan Verma, the 27th Chief Justice of India.