midnight
`` Well , we must get to work , and not sit here talking all the rest of the afternoon -- not that there 's so very much afternoon left ! What are you going to do next , Austin ? '' `` Change my clothes , and then start burning the rubbish-pile -- there 's a good moon , so I can finish it after the milking 's done . '' `` That means you 'll be up until midnight -- and you were out in the barn at five ! '' exclaimed Mr. Gray . `` I do n't see where you get all your energy . '' `` From ambition ! ''