How long is the immutable timeout? I've never timed it, but I have a hunch that comments lose their delete-ability in less than 24 hours. So please be sure that

How long is the immutable timeout? I've never timed it, but I have a hunch that comments lose their delete-ability in less than 24 hours. So please be sure that pending comments can be deleted for the entire duration of their 24hr pend state.