I'm open from 7:30-5pm but work usually from 8am-4:45 and no family exceeds a 9 hour day. I charge fees for early or late or exceeding 9 hours and parents don't like to pay extra fees. I figure that most people work a 7.5 to 8 hour day and I'm giving them a whole extra hour for commuting, so 9 hours is the max.