Koh Phangan (or Thai: เกาะพะงัน) is an island in the Gulf of Thailand in South East Thailand. It is famous for a backpackers destination. Ko Pha Ngan has two sister islands: the larger Ko Samui to the south and the smaller Ko Tao to the north. Koh Phangan has long been "the" favorite destination for backpackers and ravers from all over the world. They still gather on the island all year long to join the different parties that made it famous that is Full Moon Party happening every month for 20 years on Haad Rin Beach.