I've never known any argument to be settled by an ENworld pun, and you'll notice that I didn't attend.
The "once a 24 hour period" is not in the rules, but sounds very reasonable. As long as people are willing to make arguments based on what they feel is reasonable, rather than on what the rules actually say (ie.: for ever), people will make arguments for "once a 24 hour period".
It doesn't help quiet things that in earlier editions of the game, the once a 24 hour period was actually in the rules. Although of course, that should help settle things as anything which was in the rules in the old edition and isn't in the new one is probably actually gone for good.