Answer
On the moon, the acceleration due to gravity is about 1/6 what it is on Earth.
If a person jumps upward with a given initial speed upward, on the moon it would take 6 times longer to reach v = 0 at the top of the flight path, and six times longer to fall than on Earth.
So, for the same initial vertical launch speed, a person's hang time on the moon is six times greater than it would be on Earth.
