It comprises the eastern half of the island of Timor, the nearby islands of Atauro and Jaco, and Oecussi-Ambeno, an exclave on the northwestern side of the island, within Indonesian West Timor.
it makes up the eastern half of Timor island, Atauro, Jaco, and Oecussi-Ambeno. Oecussi-Ambeno is an exclave on the northwest side of the island in West Timor.