The folly humor of youth

You can tell your kids are a little excited to see the grandparents when they get up shortly after 6 AM to accomplish said fact. My wife managed to get them to go back to their room for a bit and told them they couldn't come out until 7. A few minutes later they peeked out of their room and asked, "What time is it in your room?" Apparently while it was still before 7 in theirs, ours must lie on the other side of some time zone that would allow them to escape...