Wizards require a full night's rest and then an hour to memorize their spells. Sorcerers require a full night's rest to regain their used slots. And then there are creatures that get spell-like abilities x/day; like the gnome. The question is, what does x/day mean in this case? Is it like a magic item? 24 hours between the last use? Is it like sorcerers, requiring 8 hours of rest after the last use? Inquiring magi want to know.