American Calander

This may be a lore-only thing for sake of simplicity. The American Calander bases its year zero at what would be 10,000 bc, which is approx the period of the first signifiacnt multi-level structure built by man. That being said, everything is +10,000 years in the American Calander, e.g. 12,000 ce = 22,000 ae (the units are not AE - I have the actual time period abbreviations written down somewhere else.)

2022 Note - The American calendar has been modified in the knight of cydonia act 1 to be based on PNA, the Neolithic period of ~10,000 BC