Explore "Unwise Child" by Randall Garrett on Textopian. Read with annotations and highlights.
Midnight, ship time.
And, as far as the laws of simultaneity would allow, it was midnight in Greenwich, England. At least, when a ship returned from an interstellar trip, the ship's chronometer was within a second or two, plus or minus, of Greenwich time. Theoretically, the molecular vibration clocks shouldn't vary at all. The fact that they did hadn't yet been satisfactorily accounted for.