400 Years Ago - Avatar Kyoshi is born on what is now Kyoshi Island

Circa 250 Years Ago - Avatar Kyoshi dies; Avatar Roku is born

112 Years Ago - Avatar Roku dies; Avatar Aang is born

100 Years Ago - Aang is told he is the Avatar by the Southern Air Temple Monks; Aang is told he is to be separated from his mentor, Monk Gyatso, consequently he runs away, is trapped in a storm and freezes himself, as well as his flying bison Appa, into an iceberg

3 Years Ago - Prince Zuko was banished from the Fire Nation and sent to recover the Avatar

Circa 3 Months Ago - Katara and Sokka discover young Aang in the iceberg

Circa 2 Months Ago - Aang visits Avatar Roku's spirit for the first time on the Winter Solstice

Circa 3 Weeks Ago - Aang and the Ocean Spirit combine to beat the Fire Nation, who was attacking the Northern Water Tribe

Circa 3 Days Ago - Zuko and Iroh gets seemingly good news from Azula, but soon lea they're now fugitives of the Fire Nation; Zuko's third year anniversary of his banishment

1 Minute Ago - Aang, Katara and Sokka discover Omashu has been taken over by Fire Nation rule