Right so there's a thing we call time which is to do with how we experience the world around us. There is also a mathematical object of the same name which is part of a model which provides accurate predictions about how things behave. The more successful predictions a model has, the less likely it is that the model is fundamentally inaccurate. But although our perception of time is undoubtedly related to the thing represented by the mathematical object we also call time, they are not the same thing. One is a mathematical object, the other is a subjective experience.