A topical day consists of 4 or 5am start, if the staff show up for their shifts your done by 3pm. That being said getting everything done that is expected is impossible, you are running a gas station, a restaurant, and a convenience store all at the same store.. If staff doesn't show up your doing their jobs as well as your own and it can snowball very quickly. You cannot have enough staff to prevent this so be prepared to put in countless hrs making your "Salery" worth about 5c an hr by the end.
If you decide this is a challenge your willing to take on. Good Luck you'll need it.
Possible 24 hr work days