The observatory had an important role as it used observations of the stars to keep accurate time.

It was now only a fragment, but it kept accurate time.

Atomic clocks can theoretically keep accurate time for millions of years.

Originally these floor clocks did not keep accurate time.

Keep accurate tax records for up to 10 years.

I had a tiny minute-glass to hand, the best I could do by way of keeping accurate time.

As if to confirm that the watch was keeping accurate time, he heard the rumbling of the trucks.

Timepieces, however, have to run at a constant rate to keep accurate time.

They kept accurate time during the whole week.

But there were no clocks that could keep accurate time at sea.