Dates One major issue for the Avatar world is how to track its extensive history. Traditionally, history can be recorded per the so called "Avatar calendar" which accords every Avatar an "era" and then tracks the days since their birth. However, this calendar fell out of widespread use over time due to its unwieldiness.[4] Alternatively, one can track time using one date as orientation, counting from there backwards and forwards. This is the case for the AG/BG dating system which is also used...