They will come up with some reason that the calculations were slightly out because of some change in the way calendars worked 3000 years ago and revise the date gprs 2015 in order to reel in a few more mugs.
Seriously though, when they all wake up on Dec 22nd and stick their heads out and see people walkin about are they gonna demand refunds?
Aswell as being stung in the wallet are they gonna feel complete tits?
They will come up with some reason that the calculations were slightly out because of some change in the way calendars worked 3000 years ago and revise the date gprs 2015 in order to reel in a few more mugs.