The main celebration feature of the Diwali festival in India is the illumination of homes and public spaces with lights and earthen lamps, symbolizing the victory of light over darkness. Families participate in prayers, rituals, and festive meals, celebrating with sweets and fireworks. The festival emphasizes themes of renewal, prosperity, and togetherness. Diwali serves not only as a spiritual occasion but also fosters community bonds as people come together to share in the joyous atmosphere and exchange gifts and greetings.