Except for Mobile Suit Gundam 00, which follows the current calendar era albeit three centuries in the future, all Gundam series are set in a fictional era, with a new calendar adopted after a drastic event or chain of events and typically involving a major conflict involving Earth and space colonies (and in some cases the Moon and terraformed planets). An exception are the Gundam Build timelines, which are set in an alternate present time where all other Gundam installments are fictional.