History of the World of Avatar

To further clarify the often confusing timeline in Avatar: The Last Airbender, this timeline dates events as on a scale of years, with the year Sozin began the war set as year 1000.
 * Note: The events after "The Boy in the Iceberg" and prior to the "The Guru" may not be appropriately set, as the only concrete date given in the show is that of the Day of Black Sun (1 August).

Before War (Before year 1000)

 * Days before the Avatar :People bend the energy within themselves.


 * The Bending arts are discovered, and the Four Nations split off from each other. The Air Nomads learn Airbending from the Flying Bison, the Fire Nation learns Firebending from the Dragons, and the Earth Kingdom learns Earthbending from the Badgermoles, the Water Tribes learn Waterbending by observing the pull of the Moon on the tides.


 * Days after the Avatar :The "Avatar" is born into the world, one person who can use can master all four elements. The Avatar Cycle begins.


 * Avatar Yangchen of the Airbenders is born, and dies.


 * Unknown date before 688 :Avatar Kuruk tries to kill Koh, the Face Stealer, as revenge for stealing the face of his wife Ummi. This event is confusing to place chronologically, as if Koh's description of the event is taken literally, it would have happened c. 200-300, over three hundred years before Kuruk's death. Being as Kyoshi was the oldest Avatar at two hundred thirty years of age at death, it is possible that Koh's sense of timing is off, or that time runs differently in the Spirit World.


 * 688 :Avatar Kuruk dies; Avatar Kyoshi of the Earth Kingdom is born.


 * c. 730 :Avatar Kyoshi kills Chin the Great and founds Kyoshi Island; The day is remembered as Avatar Day in Chin Village, and Kyoshi Day on Kyoshi Island. Sometime after this event, a peasant uprising in Ba Sing Se spurs her to create the Dai Li.


 * 918 :Avatar Kyoshi dies at age 230; Avatar Roku of the Fire Nation is born.
 * Fire Lord Sozin is born on the same day as Roku.


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


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


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


 * 950 :Guru Pathik is born.


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

War Years (1000-1101)

 * 1000
 * Avatar Aang is confirmed as Avatar at the age of twelve, four years earlier than normal, because the monks were fearful of a possible war. The monks decided to send Aang to a different air temple to continue his training. Distraught and confused by his destiny, he flees the Air Temples.
 * Fire Lord Sozin begins his war on the other nations. He 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 the Avatar. Most, if not all, of the Air Nomads are killed.
 * Fire Lord Azulon is born this year.
 * c. The city of Taku is destroyed by the Fire Nation.


 * 1015
 * A battle between the Fire Navy and the Northern Water Tribe results in the capture of Fire Navy uniforms.


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


 * 1037 (approx.)
 * Iroh is born to Fire Lord Azulon and Fire Lady Ilah.


 * 1040
 * c. The Fire Nation begins raids on the Southern Water Tribe, destroying its city, and systematically capturing its Waterbenders.
 * c. Hama is taken prisoner by the Fire Nation.


 * 1058 (approx.)
 * Ozai is born to Fire Lord Azulon and Fire Lady Ilah.


 * 1083
 * Jet of the Earth Kingdom is born.
 * Prince Zuko is born to Prince Ozai and Princess Ursa.


 * 1084
 * Princess Yue is born to Chief Arnook of the Northern Water Tribe and his wife. Soon after her birth, Yue is healed by the Moon Spirit, Tui.
 * Sokka is born to Chief Hakoda and Kya of the Southern Water Tribe.
 * Suki is born on Kyoshi Island.
 * Mai of the Fire Nation is born to a nobleman and his wife.


 * 1085
 * Princess Azula is born to Prince Ozai and Princess Ursa.
 * Katara is born to Chief Hakoda and Kya of the Southern Water Tribe.
 * Ty Lee, of the Fire Nation, is born into a noble family.


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


 * c. 1094
 * Iroh begins his legendary 600-day Siege of Ba Sing Se.
 * The Southern Raiders attack the Southern Water Tribe in an attempt to kill the last Southern waterbender. Chief Hakoda's wife Kya sacrifices herself to save 8-year old Katara, the true last waterbender.


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


 * 1097
 * Prince Zuko is banished to hunt the Avatar after an Agni Kai with his father.


 * 1099
 * Avatar Aang is awakened from 100 years of suspended animation by Katara.
 * Prince Zuko finds the Avatar, and begins to hunt him down after his first attempt to apprehend him fails.
 * Avatar Roku informs Aang of the coming of Sozin's Comet on the summer solstice, telling him that Ozai must be defeated by the time of its arrival.
 * The Fire Sages are accused of treason and imprisoned by Admiral Zhao.


 * 1100
 * The Fire Nation is repelled at the Battle for the Northern Air Temple, but they acquire an experimental war balloon in the aftermath.
 * The Fire Nation attacks the Northern Water Tribe, but is repelled by Aang acting as the Avatar of the Ocean Spirit, La, after Admiral Zhao kills the Moon Spirit.
 * La kills Admiral Zhao in retaliation for Tui's death.
 * Omashu falls to the Fire Nation.
 * June: Ba Sing Se falls to the Fire Nation through an internal coup d'etat led by Princess Azula and the Dai Li.
 * Dai Li operative Joo Dee is appointed Supreme Bureaucratic Administrator of Ba Sing Se by Princess Azula.
 * The Fire Nation establishes administrative control of the Serpent's Pass by establishing a fortified bridge.
 * 1 August: An attack on the Fire Nation Capital led by Avatar Aang in an attempt to defeat the Fire Lord fails, leaving many of the Fire Lord's enemies imprisoned.
 * During the failed invasion, King Bumi liberates Omashu from the Fire Nation.
 * Prince Zuko betrays the Fire Nation and joins the Avatar's quest to oust Fire Lord Ozai.
 * Zuko and his allies free several prisoners from the Boiling Rock Prison, the first successful escape to take place at this prison.
 * The Fire Nation attacks the Western Air Temple in an attempt to kill Zuko and Aang. The attack fails as everybody escapes. The group takes refuge on Ember Island.
 * Fire Lord Ozai crowns himself Phoenix King while he appoints Azula as Fire Lord.
 * Ozai launches a major attack on the Earth Kingdom with his armada of Fire Nation Airships in an attempt to end the War.
 * Sozin's Comet returns, enhancing the Firebenders' powers 100-fold.
 * The Order of the White Lotus, led by General Iroh, liberates Ba Sing Se from Fire Nation rule, effectively liberating the entire Earth Kingdom.
 * An attack launched by Avatar Aang's group succeeds in destroying the Fire Nation Air Force.
 * Prince Zuko and Katara defeat Azula during her coronation as Fire Lord. Her defeat causes her to have a total mental breakdown.
 * Avatar Aang defeats Ozai through the use of the Avatar State, and strips him of his firebending.
 * Fire Lord Ozai and Azula are imprisoned for various war crimes.
 * Prince Zuko ascends to the throne as Fire Lord, vowing to the Nations that he will dedicate his rule to rebuilding the world with the help of the Avatar.

After War (1100-Present)

 * 1100
 * Fire Lord Zuko declares the War officially over.
 * Fire Lord Zuko questions the now powerless and imprisoned Ozai of his mothers whereabouts.
 * Azula is institutionalized at a mental health facility.