ten
o'clock
`` Oh ! I reckon you are right . Anyhow , we used to write in school that it 's no use locking the stable door after the horse is stolen . But looky here , do you know it 's turning-in time -- ten o'clock as near as I can tell . Me for the bunk , right quick ! '' Thad sat there for some little time after his chum had crawled into his comfortable , if cramped nest . Finally he , too , began to get ready to retire .