The main purpose of the Diwali festival in Indian culture is to celebrate the victory of light over darkness and good over evil. It is also a time for families to come together, exchange gifts, and share festive meals. Diwali, known as the Festival of Lights, signifies the return of Lord Rama to Ayodhya after defeating Ravana, marking a time of renewal and hope. Homes are adorned with lights and diyas (oil lamps), symbolizing the radiance of good fortune. This festival encourages gratitude, generosity, and a spirit of joy among communities.