The Union Territory of Puducherry (/pʊdʊˈtʃɛri/; Tamil: Putuccēri, lit. 'New Town') also known by its former name Pondicherry (/pɒndɪˈtʃɛri/), is a union territory in India. It was formed out of four territories of former French India, namely Pondichéry (Pondicherry; now Puducherry), Karikal (Karaikal), Mahé and Yanaon (Yanam), excluding Chandernagore. It is named after the largest district, Puducherry. Historically known as Pondicherry (Pāṇṭiccēri), the territory changed its official name to Puducherry on 20 September 2006.