Madras Day (Chennai and Tamil Nadu, India)

Madras Day is a festival organised to commemorate the founding of the city of Madras in Tamil Nadu, India. It is celebrated on 22 August every year, 22 August 1639 being the widely agreed date for the purchase of the village of Madraspatnam or Chennapatnam by East India Company factors Andrew Cogan and Francis Day from Damarla Venkatadri Nayaka, the viceroy of the Vijayanagar Empire.

Chennai, also known as Madras, is the capital and largest city of Tamil Nadu, the southernmost state of India. It is located on the Coromandel Coast of the Bay of Bengal. According to the 2011 Indian census, Chennai is the sixth-most-populous city in India and forms the fourth-most-populous urban agglomeration. Incorporated in 1688, the Greater Chennai Corporation is the oldest municipal corporation in India and the second oldest in the world after London.

Tamil Nadu is the southernmost state of India. The tenth largest Indian state by area and the sixth largest by population, Tamil Nadu is the home of the Tamil people, who speak the Tamil language—the state's official language and one of the longest surviving classical languages of the world. The capital and largest city is Chennai.