Parental programable black out periods

Love the weekday and weekend night black out periods that Xfinity has provided as a tool for parents to moderate their childrens' use of the internet.  Also like the pause function.  But I would love a program that parents can make black out periods for internet use.  When the kids are home on break or during the summer, I am forced to pause every day their internet use in the afternoon to get them to go outside, and then am subject to their whining to put it back on for just a few minutes more.  If I could pre program it, then I could just leave it and fall back on it when they complain.  Plus it would just get them in the habit of having the internet at certain times, while I don't have to remember EVERY day to pause it.