Time doesn't exist for a man.
We measure so called 'objective time' by difference in a movement of objects. The subjective perception of time depends on movement of thoughts, feelings and body sensations.
Time is fourth dimension. We and everything we know is three dimensional. A moment is three dimensional. A series of moments creates time and become four dimensional. Man jumps only from one moment to another moment. Thanks to our memory we remember several past moments and therefore have a feeling of time.
“How can the past and future be, when the past no longer is, and the future is not yet? As for the present, if it were always present and never moved on to become the past, it would not be time, but eternity.” - St. Augustine