“Diwali” is celebrated by Indians all over the world today. It is an important Indian festival celebrated with pomp and gaiety across linguistic boundaries. In the Hindu calendar, which is a lunar one, it falls on amavasya, or the new moon, about twenty days after the festival of Dussehra, in the month of Kartik.
Diwali/Deepavali symbolizes the victory of light over darkness. In the South, Deepavali is celebrated to mark the triumph of Lord Krishna over the demon king Narakasura. In North India, Diwali is celebrated as Rama’s homecoming to Ayodhya after the defeat of Ravana and his coronation as king.
More about Deepavali here
எல்லோருக்கும் என் இனிய தீபாவளி நல்வாழ்த்துக்கள்