Diwali, the Festival of Lights, is a significant five-day festival celebrated by Hindus, Sikhs, and Jains, symbolizing the triumph of light over darkness and good over evil. While all three religions share this theme, their specific celebrations and meanings differ, including the Hindu celebration of Lord Rama's return, the Sikh commemoration of Guru Har Gobind Ji's release from prison, and the Jain observance of Lord Mahavira attaining nirvana.