Astronauts Borman and Lovell had been in space more than three hundred thirty hours.

VOA: special.2009.07.01

It limited residents to no more than thirty hours of continuous duty.

VOA: special.2009.06.02

After thirty-six hours, Brown was captured in the building that served as the fire engine and guard house.

VOA: special.2009.11.06

On July thirty-first, the ship traveled six hundred and one kilometers in only twenty-four hours.

VOA: special.2009.12.23

Five hours after the explosion, flight controllers advised firing the rocket for thirty-five seconds.

VOA: special.2009.07.22

More than four-thousand shells had been fired during the thirty-three hours of fighting.

VOA: special.2009.08.13

The two astronauts spent more than thirty-one hours on the moon.

VOA: special.2009.07.29

He wrote this about his experience: I know that during that long and racking march of thirty-six hours over the unnamed mountains and glaciers of South Georgia it seemed to me often that we were four,not three. The American poet T.S.Eliot was influenced by Shackletons description.

VOA: special.2010.02.24