The state-mandated number of "required hours" for homeschoolers where I live is the same as is required of kids in the government school system (and in private schools) - as it should be if hours are to be dictated at all, since homeschoolers should not face a more draconian rule than any other child in the state. But in the system the hours are based on children's attendance in buildings - whether their bodies are present or not - not actual "instructional hours." Kids typically spend six-and-a-half to seven-and-a-half hours a day in their school buildings, but the hours-mandate here comes out to a little less than five hours a day. That indicates that the rule doesn't account for lunch time and recess. And I can attest - from having taught here in a public high school for four years - that the number of hours is based on high school kids' presence in six classes a day (with each class being about 50 minutes long). Then that same number is just applied to middle school and elementary and comes out to 4.86 hours a day - in whatever manner each school arranges the time.
Obviously, that doesn't mean kids are actually engaged in learning for that whole time. In fact, even in an organized high school class, one can eliminate from instructional time at least five minutes after a bell rings for getting settled, and another five to 10 at the end. Additionally, we all know how much wasted time and/or kid zone-out time happens in the middle of lectures and in a typical elementary classroom, too.
But the system says if the kids are there, the hours count. So...by that same standard, if our homeschooled kids are with us (or with someone designated by us according to the homeschool law's parameters), their hours are counting. Thus, if we assume a child is awake for 14 hours a day on average and that our learning year is legitimately 365 days, not just 180, even if we're not always doing bookwork (because the rule is based on when our kids are present in the "school," same as with the system), that means we have 5,110 "school hours" in a year. And even if we remove three hours a day for meals (since the system appears to not count "lunch hour"), that's 4,015 hours. Of course, we homeschoolers can legitimately count our kids' "recess" time (as physical education/health/fitness), but even if we eliminate that, it's clear that we really have plenty of time by the system's standard of measure - i.e., that hours count if the child's body is present.
So...the lesson of the day in terms of time for us - in any state with "mandated hours" or even "mandated days" - is simple: Don't fret about it for even a minute. The fact is that homeschool hour- or day-mandates use the system's rules and stick them onto homeschoolers. We get freaked out by that when we shouldn't, because we can and should take the bureaucrats' rule and make it work for us. If they're going to say they have a right to mandate anything to us - which is, again, the topic for another discussion - then we can use their definitions to our benefit. They define attendance as the presence of the children's bodies, so we can too. Fair is fair!
So relax and enjoy your freedom. You've got the hours covered without even thinking about it...probably at least three to four times over.