Time

Time in the Avatar Universe is can be split into: time before the Avatar, and time of the Avatar, defined by the first known Harmonic Convergence. This is akin to history and prehistory in the real world. Tracking time in the universe [by the characters] seems to be done via regular means, but focuses on seasons and the Zodiac. The system devised by the Avatar Community uses perhaps the most era defining event of the Hundred Year War: the Air Nomad Genocide. This is denoted by BG (before genocide) and AG (after genocide).

In relation to Dungeons and Dragons
Some events, people, locations and items do not exist in certain times. To differentiate the different times, a symbol will be used. The clock at two o'clock, 🕑, will represent a specific time, denoted by a subscript and modifying superscripts.

The usage is summarised in the table below.