Religion
52 events, 1801 to 2023; 2 marked as turning points.
1801
Jambudweep proclamation of the Maruthu brothers
The Maruthu brothers issued a proclamation calling on all people of the peninsula, whatever their religion, to fight the British.

1806
Indian sepoys of the Madras Army rose against the East India Company at Vellore Fort over new dress regulations.

1814
Church Missionary Society begins work in Madras
After the Charter Act of 1813 allowed missionaries into India, the Church Missionary Society placed its first missionaries at Madras in 1814.
1815
St. George's Church built in Madras
St. George's Church on the Choultry Plain was opened in 1815 and later became the cathedral of the Diocese of Madras.

1820
Rhenius begins CMS mission in Tirunelveli
Church Mission Society missionary C. T. E. Rhenius arrived in Tirunelveli and built a large Protestant mission based at Palayamkottai.

1823
Birth of Ramalinga Swamigal (Vallalar)
Ramalinga Swamigal, the Tamil saint-poet known as Vallalar, was born at Marudur near Chidambaram.

1826
Bishop Reginald Heber dies at Tiruchirappalli
Reginald Heber, Bishop of Calcutta and hymn-writer, died suddenly at Trichinopoly during a tour of South India.

1829
St. Stephen's Church founded at Ooty
St. Stephen's Church at Ootacamund, whose foundation stone Governor Stephen Lushington laid, opened for worship in 1831.

1833
Ayya Vaikundar begins his mission
Ayya Vaikundar began the teachings that gave rise to Ayyavazhi, a movement that challenged caste rules in southern Travancore.

1835
Anglican Diocese of Madras created
Daniel Corrie was consecrated the first Bishop of Madras, and St. George's Church became the cathedral of the new diocese.

1838
Ayya Vaikundar imprisoned by the Travancore king
Ayya Vaikundar, founder of Ayyavazhi, was arrested on the orders of the Travancore king and held at Singarathoppe jail.

1844
The Crescent, first Indian-owned newspaper in Madras
The Crescent, launched by Gazulu Lakshminarasu Chetty, was the Madras Presidency's first newspaper under Indian ownership.
1849
Arumuka Navalar receives his title at Thiruvaduthurai
Travelling to Madras to acquire a printing press, Jaffna scholar Arumuka Pillai received the title Navalar from the Thiruvaduthurai Adheenam.

1851
Ayyavazhi tradition records that Ayya Vaikundar's earthly mission ended on 2 June 1851.

1865
Vallalar starts the Samarasa Vedha Sanmarga Sangam
Vallalar, or Ramalinga Swamigal, formed a fellowship of devotees against caste distinctions, which was later renamed the Samarasa Suddha Sanmarga Sathya Sangam.

1867
Vallalar opens the Sathya Dharma Salai at Vadalur
At Vadalur, Ramalinga Swamigal opened a free kitchen for the needy of every caste and lit a stove that was never to be put out.

1872
Vallalar opens the Sathya Gnana Sabhai at Vadalur
At Vadalur, Ramalinga Swamigal (Vallalar) opened the Sathya Gnana Sabhai, which taught compassion for every living being regardless of caste.

1874
Ramalinga Swamigal shut himself in a room and told followers not to open it; when officials broke in that May, nobody was inside.

1877
Robert Caldwell consecrated Bishop of Tirunelveli
Missionary and Dravidian scholar Robert Caldwell, based at Idaiyangudi, was consecrated as a bishop for the Tirunelveli mission.

1882
Theosophical Society moves headquarters to Adyar
Helena Blavatsky and Henry Steel Olcott moved the headquarters of the Theosophical Society to Adyar in Madras.

Hindu-Muslim riots broke out in Salem over a procession route past a new mosque; the trials that followed made C. Vijayaraghavachariar famous.
1886
Iyothee Thass declares Dalits are not Hindus
Anti-caste activist Iyothee Thass declared that the depressed classes were not Hindus, a stand he later carried into the Dravida Mahajana Sabha and the 1891 census.
1895
Brahmavadin journal launched in Madras
Brahmavadin, a journal of Vedanta, was launched by Alasinga Perumal and fellow Madras followers of Swami Vivekananda.

1896
Ramana Maharshi arrives at Tiruvannamalai
Aged sixteen, Venkataraman, afterwards known as Ramana Maharshi, left Madurai for Arunachala hill at Tiruvannamalai and remained there until his death.

San Thome Cathedral rebuilt and consecrated
The church over the traditional tomb of St Thomas at Santhome, Madras, was rebuilt in neo-Gothic style and consecrated on 1 April 1896.

Prabuddha Bharata journal founded in Madras
Started in Madras in July 1896 on Swami Vivekananda's encouragement, Prabuddha Bharata was an English-language journal of the Ramakrishna movement.

1897
Swami Vivekananda visits Madras
Returning from the West, Swami Vivekananda stayed at the Ice House on the Madras beach from 6 to 14 February 1897.

1898
Iyothee Thass founds the Sakya Buddhist Society
After embracing Buddhism in Ceylon, Iyothee Thass founded the Sakya Buddhist Society in Madras, launching a Tamil Buddhist revival among Dalits.
1907
Chandrasekharendra Saraswati becomes head of the Kanchi Matha
On 13 February 1907 Swaminathan was installed as the 68th pontiff of the Kanchi Kamakoti Peetham, taking the name Chandrasekharendra Saraswati.

Iyothee Thass launches Oru Paisa Tamizhan
Iyothee Thass launched the Tamil weekly Oru Paisa Tamizhan, an anti-caste journal that later became The Tamilan.
1910
Sri Aurobindo settles in Pondicherry
Facing continued British repression, Bengali nationalist Aurobindo Ghose moved to French Pondicherry in April 1910.

1925
Madras Hindu Religious Endowments Act
A law passed under the Justice Party government placed Hindu temple endowments under the oversight of a statutory board.
1933
Death of Annie Besant at Adyar
Annie Besant, Theosophical Society president and Home Rule leader, died at Adyar in Madras.

1938
Tambaram World Missionary Conference
Madras Christian College at Tambaram hosted the International Missionary Council's world conference, a landmark in the ecumenical movement.

1950
Death of Ramana Maharshi at Tiruvannamalai
The sage Ramana Maharshi died at Sri Ramanasramam, Tiruvannamalai, where he had lived for over five decades.

1962
Velankanni shrine raised to a minor basilica
Pope John XXIII raised the Marian shrine of Our Lady of Good Health at Velankanni to a minor basilica.

1970
Vivekananda Rock Memorial opened at Kanyakumari
A memorial to Swami Vivekananda was completed on a rock off the coast of Kanyakumari after a nationwide fundraising campaign.

1978
Sankara Nethralaya eye hospital founded in Madras
Led by S. S. Badrinath, a group in Madras founded Sankara Nethralaya, a charitable eye hospital run on a not-for-profit basis.

1980
Hindu Munnani founded in Tamil Nadu
The Hindu Munnani, a Hindutva organisation set up with RSS backing, was founded in Tamil Nadu by Ramagopalan.
1981
Meenakshipuram mass conversion
Several hundred Dalits in Meenakshipuram village in Tirunelveli district converted from Hinduism to Islam, citing caste discrimination.
1982
Mandaikadu Hindu-Christian clashes
Tensions between Hindus and Christians in Kanyakumari district escalated during the Mandaikadu temple festival, leading to police firing and deaths.
1992
Mahamaham stampede at Kumbakonam
A stampede at the Mahamaham tank in Kumbakonam during the 12-yearly festival killed 48 pilgrims.

1993
Bombing of RSS office in Chennai
A bomb destroyed the Rashtriya Swayamsevak Sangh office in Chetpet, Chennai, killing several people.
1995
Mani Ratnam's Bombay released amid controversy
Bombay, Mani Ratnam's film about an inter-religious couple during the 1992-93 Bombay riots, drew controversy, and bombs were thrown at his Madras home.
1997
The killing of a traffic constable in Coimbatore was followed by communal riots in which 18 Muslims and 2 Hindus were killed.
1998
Twelve bombs exploded across Coimbatore, killing 58 people, ahead of a campaign meeting by BJP leader L. K. Advani.
2001
Chained to their beds, 28 inmates died when fire swept through a faith-based mental asylum at Erwadi.
2002
Tamil Nadu anti-conversion law
The AIADMK government introduced a law against forcible religious conversion, which was withdrawn after the 2004 Lok Sabha election and formally repealed in 2006.
2004
Arrest of the Kanchi Shankaracharya
Jayendra Saraswathi of the Kanchi math was arrested in the Sankararaman murder case; he and the other accused were acquitted in 2013.

2005
Sethusamudram Shipping Canal Project inaugurated
Prime Minister Manmohan Singh launched work on a shipping canal between India and Sri Lanka, a project later stalled by the Ram Setu dispute.

2007
Ram Setu affidavit controversy
A government affidavit telling the Supreme Court there was no historical proof that Adam's Bridge was built by Rama intensified opposition to the Sethusamudram canal.

2023
Udhayanidhi Stalin's remarks on Sanatana Dharma
Minister Udhayanidhi Stalin's call to eradicate Sanatana Dharma drew national controversy and court cases.
