The thing we call time according to our clock is not the TIME- 4th dimension at all. When we say its 4 o’clock in the morning or 4 AM indicates that the earth is on a position from where it would be hardly seen the sun. Basically, the earth moves on its axis and a whole round on it is known as a day which is divided in to 24 hours. When the earth moves one whole rotation around the sun is known as a year or 365 days. Thus the hour, minutes, seconds are the scale of quantum rotation. So, when we see the time in our clock actually we are watching the measuring scale of quantum rotation of the earth around the sun and on its own axis. Not the time- the 4th dimension. Thus- Unit of time is not Years/Months/Hour/Minutes/Second/day. So, its required to change the term unit of measuring time is Years/Months/Hour/Minutes/Second/day. Because it’s the unit of measuring the rotation of the earth. This also refer that TIME/SPACE/RELATIVITY – researchers are doing wrong when they assume the unit of calculating TIME is Years/Months/Hour/Minutes/Second/day.