Once more I will try to explain the arrows of time, as arrows, and the run of light at the speed of light ((+/-)300,000kps) (at once being the speed of time)!
Every point in a universe is its 0-point, its dead center point (every single point of that universe)! and no light can ever pass it. So, its speed 'c' is nothing more nor less than the speed of time itself at one of two 0-points, the other 0-pointg being the collapsed constant of the PBB(B)H ([future (into the past) | past (into the future]) Horizon. And no, I didn't put future | past down backward.
The positive (+) of the speed of light, observed, is always past (-) to future (0-point) via future (+300,000kps). Don't dismiss it! It is exactly what we observe of the universe and everything we observe in it near and far!
Light is emitted at 0-point, center point, future point, and its direction of travel is from 0-point, center point, future point, toward the collapsed constant of Horizon of the universe in a radial line of past (-300.000kps) to the Horizon. It travels ass-backwards ((-) always into the past (-)) from 0-point toward the distant Horizon (-).
Einstein wasn't the only "observer" sitting, or standing, on 0-point. Neither was Hawking. Every "observer" sits, or stands by a railroad track, on 0-point, at center point, at future point. No light is ever going to outrun 0-point, center point, future point, therefore never getting out front of any observer, traveler, measurer, or measurement, in space and time. It will always travel fast going away at the speed of time into the past (-). It will always travel fast oncoming from the past at the speed of time into the future to arrive at 0-point, center point, future point, the observer, whatever it will be, or whoever it will be, including you. But! it can never pass the observer. It can never pass you! That observer a kilometer further along what you think is the path of light never sees you! just your history (-), your past (-)! And that is all you ever observe of that observer, is the history, the past via a future (+) come to you, to 0-point, to dead center point of the universe, to future point, and no farther along than you in space and time. It's what Einstein actually saw in his mind's eye trip, and what Hawking meant by everyone and everything always passing under that frozen time clock in the center of the "Grand Central Station" of universe (never passing, never leaving, from under it). Light, at the speed of light 'c', at the speed of time 'c', just like you and me, just like the astronauts aboard ISS, just like the discreet matter of quantum mechanics, doesn't either. Its sheer existence, regarding space and time, is a matter of backward facing.