Thursday Island is one of a few small islands, just off the northern tip of Australia, in the Torres Strait. Two of the neighbouring islands are called Wednesday & Friday Islands.
The revised itinerary only has 1 sea day between Thursday Island and Darwin, so the original departure time of 18:00 was moved ahead to 12:00. Therefore, our time ashore is only a couple of hours, or little more than a quick walk around the harbour.
Based on the heat and especially the humidity, most passengers only lasted an hour or less, before heading back to the ship.