premise: Diwali is an American festival.
hypothesis: Diwali or Deepavali is the Hindu festival of lights celebrated every year in autumn in the northern hemisphere ( spring in southern hemisphere ) . It is an official holiday in Fiji , Guyana , India , Malaysia , Mauritius , Myanmar , Nepal , Singapore , Sri Lanka , Suriname , Trinidad and Tobago , and recently Sindh Province in Pakistan . One of the most popular festivals of Hinduism , it spiritually signifies the victory of light over darkness , good over evil , knowledge over ignorance , and hope over despair .