LoL, I have no clue how to answer that, I would imagine to get the most members on @ once, and seeing how most of TA's traffic is coming from the US sometime most likely around 8:00-9:00 PM East coast?.... Not sure though...
Can we just kill this thread already? The only people likely to pay attention are the regulars, and there aren't 1500 of them. To break the record we'd need a ton of random visitors, and the only way to get their attention is with the release of a popular game, who's gonna arrange that?