It's come up in some RP chat that we seem to now be at six years or so post-Calamity.
However, near the end of the 2.50 quests Minfilia says it's been five years since the Calamity, which doesn't seem to mesh with the various mentions of time passing between various storyline quests.
Are we still somewhere in the 'five years past the Calamity' time frame, or have we crossed into year six? Does anyone have a solid idea of how much time passes between the events at the start and end of the 2.0 storyline, between Castrum and 2.1, or 2.2, and so on?