in other words, what time will PokeBank be launched on 12/27?
Probably December 27th, 12:00 am or 00:00, you know, really early in the morning. Most other games have been like that. But that's sooooo early in the morning..... Rather die than wake up that early! :P
Nope. Chuck Testa. In quite a few English speaking countries (I.E. US, UK) Pokebank has yet to be released, and a release date is still unknown. A fake picture has also been leaked, stating that the app will be released in the UK on Dec 30th (Which is today, and no Pokebank in the UK! :D) and January 7th in the US.
Pokémon Bank will be available to download from the Nintendo eShop as soon as it is the 27th of December 2013 so 00:00 or 12:00 am.
It is the same as when any game is first available, you can get it in any store past 00:00 or 12:00 am providing that the store you go to is open.