Thitu Island, also known as Pag-asa Island ; Đảo Thị Tứ ; Zhongye Dao, having an area of 37.2 hectares, it is the second largest of the naturally occurring island in Spratly Islands. It lies about 500 kilometers west of Puerto Princesa. Its neighbors are the North Danger Reef to the north, Subi Reef to the west, and the Loaita and Tizard Banks to the south. …Thitu Island, also known as Pag-asa Island ; Đảo Thị Tứ ; Zhongye Dao, having an area of 37.2 hectares, it is the second largest of the naturally occurring island in Spratly Islands. It lies about 500 kilometers west of Puerto Princesa. Its neighbors are the North Danger Reef to the north, Subi Reef to the west, and the Loaita and Tizard Banks to the south. As the poblacion of the Kalayaan municipality of Palawan province in the Philippines, it also administers nearly a dozen other islets, cays and reefs in the Spratly Islands. The island is 270 nautical miles west from Palawan, Philippines.