The nature of time can be found in the nature of... well... nature.
Time moves along like how a fern tree is structured. On every fern tree you can focus on a leaf which is like a mini fern tree in itself. Then on THAT mini fern tree there is ANOTHER mini-er fern tree, and so on. The cycle repeats and gets infinitely smaller and divided up into little mini fern trees until all a fern tree leaf comprised of ALL fern tree leaves is reached. It reaches a zero point. An inconceivable point of oneness. "Point zero". Same with time.