Time is just a measure of entropy(disorder). Time ‘moves’ in the direction of increasing entropy and since entropy moves in only one direction (increase) time also moves in one direction — to the future. If the whole universe, every single molecule, came to a standstill time would have no meaning.
For that to happen, they would all have to be gathered into one place.
Big Bang T-1 second.........................
That's always how I looked at it. Time is just a measure of the Big Bang expansion. When the universe stops expanding and hits absolute zero, time stops along with everything else.