You leave the island the same way you returned to the future the second time, by using the Lab setting to return to the "present time", outside Pendulum's Lab.
you leave and go to a different island
After you travel back to the future to get the Island Medallion, return to the present to leave the island (just as you did after completing the items), by using the Lab selection on the time device.
Once you have your Island Medallion, simply use the time device again to go to Pendulum's Lab (12 o'clock).
Use the Lab setting on the time device, just as you did to get to the restored future.
After you get the Island Medallion, or anytime you want to leave the island, use the time device at the "LAB" setting, which takes you outside Pendulum's Lab in the "present". Then you can leave Main Street as usual in the blimp.
Once you have the island medallion, you can return to the present using the time device on the "Lab" setting (12 o'clock), as you can at any point during the game.
The oracle is in the building on the hill on Time Tangled Island.
Time Tangled Island was the 3rd island in Poptropica and debuted in 2007, and was originally called Time Twisted Island.
Time Tangled Island, the third island of Poptropica, was released in July 2008.
There isn't a phone on Poptropica's Time Tangled Island. There is a cell phone on Nabooti Island.
There were characters from Time Tangled Island on several islands during the promotional period for the island. When Time Tangled was released (2008), the characters were removed.
There are no more secret items on time tangled island, but if you are talking about winning the whole island, go onto youtube and type 'poptopica time tangled island.'