In reality, there is no time, just material objects, physical things, including our own physical form, all constantly changing at the same rate. Time is us, as without us, without the mind that is, there is no time. What are we then? We are one moment in existence, but not a moment in time that one could pinpoint on a clock, but more like an instance of existence so brief and yet so immense, that it is beyond measure, changing but only physically, in reality, fixed and eternal.
Our perception of time is a kind of awareness, an experience of our ourselves and the world as one. This is the mind reasoning with the reality of its own physical existence. The past and the future, then, are but the aspects of our perception of ourselves in the physical world, a classification of our experience in the form of sequences of events: one thought must after another, one event after another, day after day, builds up, all sequentially arranged in the mind and named as the past, and then the same imaginatively extrapolated and named the future.