History of the World of Avatar

To further clarify the often confusing timeline in Avatar: The Last Airbender, this timeline dates events as "Before War" (before year 1000, BW) and "War" years (after 1000, WY).

Before War c. 900-800 B.W.
 * Avatar Kuruk tries to kill Koh, the Facestealer, as revenge for stealing his wife's face.

918 B.W.
 * Avatar Kyoshi dies at age 230; Avatar Roku of the Fire Nation is born.
 * Fire Lord Sozin is born this year.

934 B.W.
 * Avatar Roku is confirmed as Avatar at his 16th birthday, and leaves the Fire Nation to master the elements.

c. 940 B.W.
 * Fire Lord Sozin ascends the throne, following the death of his father.

946 B.W.
 * Avatar Roku returns to the Fire Nation after 12 years of travel, and marries Ta Min, a noblewoman from the Capital.

988 B.W.
 * Avatar Roku is killed while fighting a volcanic eruption at age 70; Avatar Aang of the Air Nomads is born.

1000 W.Y.
 * Avatar Aang is confirmed as Avatar 4 years early, and flees the Air Temples.
 * Fire Lord Sozin uses the power of a comet, later renamed in his honor, to launch a genocidal attack on the Air Nomads in an attempt to kill him.
 * Fire Lord Azulon is born this year.

1020 W.Y.
 * Fire Lord Sozin dies at age 102; Azulon ascends the throne.

1085 W.Y.
 * Sokka is born to Chief Hakoda of the Southern Water Tribe.

1086 W.Y.
 * Katara is born to Chief Hakoda of the Southern Water Tribe.

1088 W.Y.
 * Toph Bei Fong is born to Lao & Poppy Bei Fong of Gaoling.

c. 1094 1095 W.Y.
 * Iroh's son Lu Ten is killed in the siege of Ba Sing Se, causing Iroh to break the Siege
 * Fire Lord Azulon dies at age 95; Fire Lord Ozai ascends the throne.
 * Princess Ursa, Ozai's wife, dissapears shortly after Azulon's death.