Light travels 299,792.458 kilometers per second and Voyager 1 was last 18.774 billion kilometers from the earth.
FWIW, one can find Voyager's latest distance from earth here:
Where are the Voyagers - NASA Voyager
I heard an interesting tidbit. If Voyager was to continue at its current pace it is destined to reach the nearest star in over 40,000 years. That kinda blows my mind how vast our universe really is.
Run your own nation, play Cybernations."Conservatism is the blind and fear-filled worship of dead radicals."
- Mark Twain