Early descriptions of relative states of motion by Isaac Newton (1714) apply to modern diagrams depicting special relativity for light. True time is absolute and was distinguished from measured time, which is relative and subject to error. The time for light to pass a receding rod of length r is a single specific value regardless of the state of motion of an observer or detector and is not simply r/c as claimed in 1905 for an observer in motion. The assumption that the distance light actually travels unattached to physical objects is merely the length of the rod reflect errors of perception by the observer/detector unable to sense motion of the rod. The true time is absolute and would be properly computed and observed with respect to a position truly at rest in space. Light speed is fixed at c with respect to itself, or its own instantaneous position at any time, regardless of motion of source or observer. But relative velocity of moving objects with respect to light depend on the velocity of the object. Time dilation refers to the extent that a time measurement is in error due to motional effects of detectors, clocks, or observers, and does not mean that motion causes the time for a single event to be different than its true absolute magnitude. A single event requires a single amount of time, regardless of the amount claimed by observers in relative states of motion who do not control the event.