The most immediate was that of how to get the rockets to fire at exactly the right instant.

Now you had to catch Papa at just the right instant.

It wouldn't be heard if it went off at the right instant.

Yet now, at the right instant, they have got together, and discourse eloquent music.

He now knew what it was that triggered the crystals at precisely the right instant.

At the right instant he bites the bladder; 'blood' comes out of his mouth.

He stopped the cut at precisely the right instant.

He must ha jumped from the departing train to the arriving one at just right instant.

He continued downward, then, at the right instant, kicked outward.

The problem was not to cause an accident, but to keep from spilling that water until the right instant.