The reason my half day rate is high is to discourage it. People can pay another $10 and use the entire day which is much better for everyone. I had a family in care who used 6 hours/day on a regular basis and paid the same rate as the people using a 9 hour day. I considered a 1/2 day 4.5 hours or less since my full days are 9 hours. I also have a rule now that children must be dropped off by 9am when we get busy and can't be picked up until 3pm when naptime is over so there you have 6 hours.