About 8pm, Koh Phangan tourist police received an emergency call on hotline 1155 from two foreign tourists, a Spanish man and Belarussian woman.
They said they had become lost after going for a walk on a mountain near Moo 5 village in tambon Koh Phangan and were in need of help.
Tourist and local officials formed a search team and set out to find them.
They found Jaime Iabaig Nunez, 25, from Spain, and Darya Pankova, 22, from Belarus, about 10:20pm. They were tired but unharmed.
After being given food and water the two tourists were taken back to Hi Life Bangalow at Moo 8 village in tambon Koh Phangan, where they were staying.
The two tourists had called for help on hotline 1155. The search team contacted them using WhatsApp instant messaging app, to learn more about their location.