Eastern Indonesia is one of the two main geographical regions of Indonesia, the other being Western Indonesia. Eastern Indonesia spans across the Banda and Maluku Seas in the west, the Arafura and Timor Seas in the south, and the Halmahera Sea in the north. It comprises the archipelagic territory of Tanimbar, Banda, Maluku, Halmahera, Raja Ampat, Biak, and Western New Guinea. Central Indonesian Time and Eastern Indonesia Time are the national standard time designated for Eastern Indonesia; it falls within the UTC+8 and UTC+9 time zone, respectively.