He says that if we don't use Earth time, we won't know when to lay up at the off season.

A day and a half, objective Earth time, could take such a ship anywhere in the galaxy.

I'm going to be gone only a couple of years Earth time.

Iraq has already confessed to having made enough deadly microbes to kill all the people on Earth several times over.

Exactly 1 day ago by Earth time you transmitted a 3-alarm alert and asked to be picked up.

He would see no other sunlight for two weeks' Earth time.

The mysterious visitor had said that it would take 200 years (Earth time) to reach the nearest star.

After the manner of all living things, they replenished the Earth many times with their kind.

It had been a good many centuries, Earth time, since Nordvik1cia.

Now the only question remaining was-how long had the operation required in terms of Earth time?