nine o'clock
Their activities during the whole of the day had made the cadets sleepy , and nearly all turned in without much ado . Here and there there was an exception , and these included Fatty Hendry and Dan Soppinger . `` I 've got to get out some sort of a composition on City Improvements , '' declared Fatty . `` I do n't know much about 'em , but if I do n't get the paper in by nine o'clock to-morrow morning there 's going to be trouble . '' `` And I still have some examples in algebra to work out , '' answered Dan . `` So I think I 'll go at them before I retire . '' All of the Rovers slept soundly and did not awaken until they heard an unexpected knock on their door some time before the rising bell .