The classes are held on weekends only with the duration of 12 hours a week.

At present, the water is distributed for duration of 2 hours daily.

The series comprised 216 episodes, each 12-14 minutes long, and had a total duration of 29 hours.

These spacewalks combined for a total duration of 17 hours and 47 minutes.

Classes meet 3 days a week for a duration of 2 hours per class, as they are on a block schedule.

He flew 46 sorties over the reactor building, for a combined total duration of 52 hours.

This 500-lap event lasted for a duration of three hours and twenty-four minutes.

Its duration is usually about one hour but durations of over two hours have been seen.

During the flight he performed one egress into open space with a duration of 5 hours 3 minutes.

There are four movements, called "regions" by the composer, with a combined duration of two hours.