and honestly, paper never once told me a holiday was on the wrong day. We tried one of those scheduling programs at a site I worked at a few years back and it kept messing up the overtime rotation. What finally helped was having one guy on the crew check the list each Sunday morning and cross out anything that looked off, like a simple 10 minute look over. It was still a pain, but at least we caught the big mistakes before someone drove in for nothing. The manual review step sounds like the right fix, but I would ask to see it in action for a couple weeks before you trust it.