Hamilton Island is an island of the Whitsunday Islands in Queensland, Australia. It is approximately 887 kilometres north of Brisbane and 512 kilometres south of Cairns.
It is the largest inhabited island of the Whitsunday Islands and a popular tourist destination all year round being one of the only islands in the Great Barrier Reef with its own commercial airport, with direct flights from Sydney, Melbourne, and Brisbane.
Wikipedia https://en.wikipedia.org/wiki/Hamilton_Island_(Queensland)
Coordinates -20°21'13.038" N 148°57'40.389" E