The amount of time it takes
to traverse the distance between two points regulates the definition of our concept of time

The shorter the distance the faster time flys
The greater the distance a moment in time takes becomes eternal unless it encounters an obstruction
It takes light years to measure the time between the stars
It's instant from eye to nose
In a black hole time stands still held by the immense gravational pull .
We see time measured in the distance by light
Without light would there be any time ?
Only God knows
Let there be light .