three o'clock
They waited over half an hour without sign or sound from the trailers , then drove swiftly back to the post . There was a light in the telegraph office , and thither Hart went in a hurry . Lieutenant Doty , combining the duties of adjutant and officer of the day , was up and making the rounds . The sentries had just called off three o'clock . `` Had your trouble for nothing , Hart , '' hailed the youngster cheerily . `` Where 're the men ? '' `` Followed his trail -- turned to the east three miles below here , '' answered the trader .