Time does not go by, nor does it fly or stop. Time is different depending on who you are. A mountain, which consists of slow and heavy energy, stays in the same place for tens of thousands of years. Ten thousand years would feel as a couple of seconds feel for a human being. A mountain is never in a hurry.
Time is a subjective estimation.
Sometimes it seems to go fast, sometimes it seems to go slow. You yourself decide how you want to perceive time. Man has chosen to divide and measure the time according to the sun and the moon, the day and the night. That is one kind of time. A time that could easily be measured by human beings.