Average GPS coordinates for postcode 817: 20.717, 116.7
Listing cities:
>> Dongsha Islands/東沙群島 817, Nanhai Islands/南海島, GPS coordinates: 20.71667, 116.70000
Listing cities:
>> Dongsha Islands/東沙群島 817, Nanhai Islands/南海島, GPS coordinates: 20.71667, 116.70000