Deepavali, the Festival of Lights, is celebrated on the new moon day (Amavasya) in the Tamil month of Aipasi (October-November). It marks the end of the Hindu lunar month of Ashwin and the start of Kartik in other regions.
Deepavali celebrates the victory of light over darkness and good over evil. It is associated with the return of Lord Rama to Ayodhya after 14 years of exile, as well as other legends like the slaying of Narakasura by Lord Krishna. It is a time for new beginnings, prosperity, and joy.