Family viewing hour is a special time on TV when shows that are suitable for all members of the family are broadcast. This means that there won't be any cussing (using bad words or swearing), violence or scary scenes that may be too much for kids to handle.
This is because not all shows are made for kids or appropriate for all ages in a family. So, during family viewing hour, TV networks try to make sure that kids and parents can watch TV together without any adult content or bad words.
Think of it like when you go to a restaurant with your family. There are different menus for kids and adults. Sometimes adults order spicy food or drinks that kids can't have, but during family viewing hour, the TV shows are like the kids' menu. They are carefully selected so that both kids and adults can enjoy them without anything that can be upsetting or inappropriate.
So, family viewing hour is a special time on TV when everyone in the family can enjoy watching television together without any worries about bad content or inappropriate stuff. It can be a great time for families to bond and create memories while watching their favorite shows.