Does the subject want to ask, "How early did you get to the store when you were on the night shift?" ? Go to work 10 minutes early. By inquiring about the profile of Youke convenience store, it shows that you need to punch in ten minutes in advance to clean up every day. The staff of Youke convenience store worked eight hours in three shifts. Working hours are: morning shift, from 7 am to 4 pm, middle shift 1 to 10, and evening shift 10 to 7 am the next day.