When I started my hours were 7:30-5:30, and then one of my families asked if I could watch their kids until 6pm, well that 6pm became 6:30-7pm. After about two months, I told them that they had to come get their kids by 5:30 or I could no longer care for them. It was an extremely long day, my kids were acting out because they weren't getting enough family time, and I was burning out. They agreed to my new terms and it has been great. I will not work past 5:30, in fact I changed my hours of operation to 5:15, just so that if a parent is late, they still (hopefully) will be here by 5:30.