Diwali

Dipavali, commonly known as Diwali, is the Hindu festival of lights, with variations celebrated in other Indian religions such as Jainism and Sikhism. It symbolises the spiritual victory of Dharma over Adharma, light over darkness, good over evil, and knowledge over ignorance. Diwali is celebrated during the Hindu lunisolar months of Ashvin and Kārtika – between around mid-October and mid-November... (Wikipedia)