Board Thread:General Discussion/@comment-6192846-20150304021219/@comment-26159928-20150401205103

Your taking the Earth paraelle's too literally, IMO. This is not the real world, this is a fictional universe created by a Japanese songwriter. Mothy, if anything, would follow either Japanese beliefs about dating  (or, since EC has a couple Judeo-Christian references, that.)

We also do know that there are Three Periods, and there's no real reason to believe they go on and on and ON, but rather go on until something destroys them (IIRC, that's what happened to the Second Period). We know Third is at least 1500 years old (500+ years BT is when Held is turned into a tree), but even if we assume Sickle took forever in making the world, that would accound for closer to a thousand years, not the THREE thousand that Watching Us takes place in.