Tihar also known as Deepawali is a Hindu festival. It is celebrated for 5 days. It is celebrated mainly in Nepal and the Indian states of Assam and Sikkim. It is also celebrated in Darjeeling district of West Bengal. It is the festival of lights. In this festival "diyas" are lit inside and outside the houses to make it bright at night. It is known as "Swanti" among the Newars and as "Diwali" among Madhesis. Set in the Vikram Samvat calendar, the festival begins with Kaag Tihar in Trayodashi of Kartik Krishna Paksha. It ends with Bhai Tika in Dwitiya of Kartik Sukla Paksha every year.