Extraordinary & Supernatural X use per day abilities, do they require rest?

[Mortalis]

My question is to do with (Ex) & (Su) abilities that allow you a certain anount of uses per day, as in smite evil, rage, stunning fist, and a whole chunk of other abilities. Is rest (8 hours or otherwise) required in order to replenish your uses of these abilities? Or do they magically reset when the clock strikes 12?

Logic would dictate that you require some kind of rest, as if these abilities weren't tiring in some way your use of them wouldn't be limited (presumably equipment with similar abilities have magic stores that recharge automatically).

I can't seem to find a rule that says as much though, does anybody have a RAW justification for why sleep is required for this?

[Cheapy]

I know of no such rule.

[Zhayne]

I suppose if you wanted to be really (ahem)-retentive, you could have each use recharge 24 hours from when it was used ...

[Andrew Phillips]

Zhayne wrote:

I suppose if you wanted to be really (ahem)-retentive, you could have each use recharge 24 hours from when it was used ...

Humph!!!...That how I've always done it.

Seriuosly lots of ceatures don't or can't sleep.

[Mortalis]

Zhayne wrote:

I suppose if you wanted to be really (ahem)-retentive, you could have each use recharge 24 hours from when it was used ...

Ideally that's how I would play it, however ticking over at midnight is much easier to keep track of.

Admittedly it really only becomes a concern when rest is interrupted, or if you were in a skirmish starting at 23:59 (and even then you'd have 10 round to complete combat).

Anyway, thanks for the help all. :)