The Amondawa people who are living deep in the Amazonian rainforests of Brazil have no watches or calendars and live their lives to the according to day and night and the rainy and dry seasons.
They have no concept of age. They mark the changes from childhood to adulthood to old by changing their name.
Professor Chris Sinha said: 'We can now say without doubt that there is at least one language and culture which does not have a concept of time as something that can be measured, counted or talked about in the abstract.
"This doesn't mean that the Amondawa are "people outside time", but they live in a world governed by events rather than the passing of time."
Only discovered in 1986, the Amondawa, about 150 strong, continue their traditional way of life, hunting, fishing and farming.
They also have their own language which have a number system but it only goes up to four.
There were no words for such concepts, only divisions of day and night and rainy and dry seasons.
They also found nobody in the community had an age.
Instead, they change their names to reflect their life-stage and position within their society.
A little child will give up their name to a newborn sibling and take on a new one.
The head of researcher's said: "We have so many metaphors for time and its passing - we think of time as a 'thing'. we say 'the weekend is nearly gone', 'she's coming up to her exams', 'I haven't got the time', and so on, and we think such statements are objective, but they don't.
"We've created these metaphors and they have become the way we think. The Amondawa don't talk like this and don't think like this, unless they learn another language.
"For these fortunate people time isn't money, they aren't racing against the clock to complete anything, and nobody is discussing next week or next year; they don't even have words for 'week', 'month' or 'year'.