Sentence:  Now , as he passed the open counter that divided the assembly room from the business office , he nodded and said good night to the station keeper and his clerks , not stopping to hear the <WSD>day-watch</WSD> playback of his chewing out . 
Meaning of the word marked with <WSD> tags:  workers who work during the day (as 8 a.m. to 4 p.m.)