Calendars

Several different calendar systems are used throughout the Course Books to tell time. In chronological order of usage, they are:

The B.F. System

The B.G.A. System

The A.Y. System

The A.D. System

The S.D.C. System

And finally, the N.D. System

Additionally, some dates may use the F.Y. System, though this is much less common.

Enjoy.