 Kolkata Book Fair, Kolkata International Film Festival and Dover Lane Music Festival are major annual cultural events of Kolkata, whereas Poush Mela, Ganga Sagar Mela, Jhapan are some of the major annual fairs of the state.The diverse ethnic populace of Darjeeling Himalayan hill region celebrates several local festivals such as Losar, Dusshera or Fulpati, Tihar, Ram Navami, Maghe Sankranti, Chotrul Duchen, Buddha Jayanti, Tendong Lho Rumfaat etc.Durga Puja, held in September–October, is the biggest and most important festival of West Bengal.