seven o'clock
Remember where it is , because you 'll have to find it yourself after that , or not eat . Finish your breakfast and report to the ninety-ninth floor to Dr. Dale at seven hundred hours ! '' And as fast as he had arrived , he was gone , a flash of red color with rasping voice trailing behind . Exactly one hour and ten minutes later , promptly at seven o'clock , the three members of Unit 42-D stood at attention in front of Dr. Joan Dale , along with the rest of the green-clad cadets . When the catcalls and wolf whistles had died away , Dr. Dale , pretty , trim , and dressed in the gold and black uniform of the Solar Guard , held up her hand and motioned for the cadets to sit down . `` My answer to your -- '' she paused , smiled and continued , `` your enthusiastic welcome is simply -- thank you . But we 'll have no further repetitions .