Atheists, if you have your supposed "speed of light" why isn't there a speed of dark? Why not admit that God?

Those who wrote the Genesis creation story would have thought that daylight was something spiritual, not physical as we now know it is, and would not have thought of the sun as being its source. They considered the functions of the sun and moon as being to separate the light from the darkness - darkness would not have been thought of as merely the absence of light.