Sword Art Online Timeline

2008

 * Kazuto is adopted by the Kirigaya family after his birth and his parents' apparent death.

2011

 * Konno Yuuki is born and infected with HIV.

2018

 * Kazuto finds out about his parents' deaths from the deleted entry record he found on the internet.

September/October

 * Asada Shino is involved in a fatal robbery in a post office.

May

 * The NerveGear is created.

August

 * The Sword Art Online (SAO) Closed Beta is launched.
 * Kirito encounters Argo.

September

 * The Sword Art Online Closed Beta is closed.

November 6th

 * Start of Sword Art Online Official Server Service.
 * Kirito shows Klein the basics of the game.
 * 17:30 Aincrad Standard Time - Kayaba Akihiko successfully traps 10,000 Players in the game. Of this 10,000, between 700-800 are beta testers.
 * 213 people died because of family or friends of the players attempted to remove the NerveGear from their head.
 * Kirito parts ways with Klein and heads to Horunka village.
 * Kirito goes off to complete the «Secret Medicine of the Forest» quest. He meets Coper, another beta tester. Coper tries monster PK on Kirito only to end up dying himself. (Volume 8)

After November 6th

 * The guild Aincrad Liberation Force was started.

December

 * Suguha finds out about Kazuto’s parents’ death and their actual relationship.
 * 2000 people had died from playing Sword Art Online. Of this number, roughly 300 deaths were beta testers.
 * The top class proto-front-lines group is barely level 10 on average.

December 2nd

 * Gaiden - "Aria in the Starless Night"
 * Kirito meets Asuna.
 * The First Floor Boss Strategy Meeting is held in the Town of Tolbana.

December 3rd

 * Diabel's party finds the boss room
 * The second First Floor Boss Strategy Meeting was held. Asuna temporarily joins Kirito's party.
 * Asuna borrows Kirito's bathroom.

December 4th

 * 10:00 Aincrad Standard Time - The First Floor Boss Raid Group bands together.
 * Kirito deals the Last Attack on Illfang the Kobold Lord. He gains the Coat of Midnight as a bonus.
 * The term Beater was created.
 * Gaiden - "Aria in the Starless Night: Continuation"
 * Kirito opens the teleport gate to the second floor. The first Town Opening is held.
 * Kirito helps Argo out. He starts the acquisition quest for the Martial Arts Extra Skill.

December 7th

 * Kirito completes the acquisition quest for the Martial Arts Extra Skill.

December 8th

 * Gaiden - "Rondo the Transient Sword"
 * Asuna forces Kirito to help her hunt «Needle of Wind Wasp».
 * Kirito is Level 13.

December 14th

 * The second floor boss is defeated.
 * Gaiden - "Monochrome Concerto"
 * Asuna and Kirito party together. With Kirito's help, Asuna defeats the Dark Elf.

2023

 * Konno Yuuki begins using the MediCuboid.

April
April 8th
 * Volume 2 - "The Red-Nosed Reindeer"
 * Kirito joins the guild Black Cats of the Full Moon.

May

 * Creation of AmuSphere and ALfheim Online (ALO).

May 9th

 * Lead Group makes it through the 28th Floor, according to the Weekly Argo newspaper.

June

 * Death of the Black Cats of the Full Moon.

October-November

 * Kirito acquires the unique skill "Dual Blades".

November

 * Suguha joins ALO.
 * Kirito learns rumors of a rare item drop which can revive dead players from Argo. Kirito starts power leveling even more so than before in order to solo the event.

December
December 24th
 * Kirito defeats the event boss, Nicholas The Renegade and receive the rumored item drop, Divine Stone of Returning Soul, only just to be disappointed by its description.
 * Kirito receives a Timer-Activated Message Record Crystal from Sachi.
 * Front line is at 49th Floor.

January

 * Birth of the red guild "Laughing Coffin" (January 2024, SAO).
 * Kirito acquires the sword Elucidator from a rare drop.

February

 * Volume 2 - "Black Swordsman".
 * Front Line is at 55th Floor.

March 6th

 * ME1 - "The Progressers".
 * 56th Floor Boss Strategy Meeting
 * Duel between Asuna and Kirito; Kirito is Level 71.

March 7th

 * 57th Floor is reached

April

 * Serious meeting between Asuna and Kirito.
 * Volume 8 - "A Murder Case in the Area".
 * Front Line is at 59th Floor.

June

 * Volume 2 - "Warmth of the Heart".
 * Kirito acquired the sword "Dark Repulser".
 * Front Line is at 63rd Floor.

August

 * Gaiden - "Sound of Water, Sound of Hammer ".
 * Front Line is at 70th Floor.
 * Coalition against "Laughing Coffin".
 * 74th Floor of Aincrad reached.

September

 * ME4 - "Cold Hand, Warm Heart".

October

 * Volume 3 - Beginning of Prologue.
 * Volumes 1, 2 - Prologue.
 * Volume 1 - Chapter 1.
 * Volume 1 - End of Chapter 4.
 * Volume 1 - Chapters 5-12.

October 9th

 * Front liners actively begin exploring the 74th Floor.

October 18th

 * Kuradeel challenges Kirito to a duel
 * The Gleam Eyes is defeated; 75th Floor of Aincrad is reached.

October 19th

 * Kirito meets Heathcliff and they agree to duel.
 * Volume 1 - Chapter 12

October 20th

 * Kirito duels with Heathcliff and loses; Kirito joins the "Knights of the Blood ".
 * Volume 1 - Chapter 13.

October 22nd

 * Kirito wears Knights of the Blood's white uniform for the first time.
 * Kirito tells Asuna about his past guild, Black Cats of The Full Moon, and his reason why he refuses to form a party or joining a guild with anyone since then.

October 23rd

 * Volume 1 - Chapters 14-16.
 * Kirito meets with Godfree and Kuradeel to train in the 55th Floor dungeon.
 * Kuradeel kills Godfree during training, and reveals that he is actually member of Laughing Coffin.
 * Kirito proposes marriage to Asuna in her house in Salemburg.
 * Gaiden - Chapter 16.5.

October 24th

 * Kirito and Asuna request leave from the Knights of the Blood.
 * "The Day Before": Kirito, Asuna and Argo took the "Wizard of Oz" side quest. After that, they get married on this day.

October 25th

 * Kirito and Asuna move into their new home on the 22nd Floor.

October 26th - 29th

 * ME6 - "Algade Showdown".

October 30th

 * Kirito and Asuna encounter Yui in a forest on the 22nd Floor.
 * Volume 2 - "Morning Dew Girl".

October 31st

 * Kirito and Asuna travel to Starting City with Yui; they encounter Sasha and the orphanage.

November

 * Volume 1 - Chapters 17-19.

November 1st

 * Kirito and Asuna are approached by Yulier. They enter the dungeon under Black Iron Castle.
 * Yui is erased by Cardinal, but not before Kirito saves the data.

November 2nd

 * Kirito and Asuna leave Starting City and return to the 22nd Floor.

November 3rd

 * Kirito meets Nishida.

November 6th

 * Kirito and Nishida successfully manage to fish the local fish god.
 * Scout party of 20 people departs for the 75th Floor Bossroom. Half of them is wiped out.

November 7th

 * Volume 1 - Chapters 20-24.
 * 10:00 AM: Kirito and Asuna report at Grandum
 * 1:00 PM: Raid party departs for the 75th Floor Bossroom using a Corridor Crystal.
 * ~2:20 PM: The Skull Reaper is defeated. About fourteen players became casulaties of this boss battle.
 * Kirito reveals Heathcliff's identity, which no less than Kayaba Akihiko himself.
 * Heathcliff duels Kirito as the final boss of SAO.
 * Asuna dies in the game.
 * 2:55 PM: Kirito defeats Heathcliff; Sword Art Online is Cleared.
 * ~3:00 PM: Around 6,000 remaining player are automatically disconnected, 300 of them (including Asuna) got transported to ALfheim Online instead of returning to the real world.
 * SAO Deleted.
 * Volume 1 - Chapter 25.
 * End of Aincrad Arc.
 * Volume 3 - End of Prologue.

January

 * ME5 - "Salvia".
 * Volume 3 - Chapter 1.
 * Volume 3 and 4 - Chapters 2-5.
 * "Excaliber" found.
 * Volume 4 - Chapters 6, 7.
 * Volume 4 - Chapter 8.
 * Creation of "The World Seed".
 * Sugou Nobuyuki Arrested.
 * ALO Suspended.

March

 * Kayaba Akihiko's whereabouts is known.

April

 * SAO Survivors Reunion being held in Agil's Cafe.
 * ALO Re-established under new moderators. The data of all old ALO and SAO players is transferred to New ALO.
 * Gun Gale Online (GGO) Created.

May

 * Volume 4 - Chapter 9.
 * Establishment of New Aincrad inside of the New ALO.
 * The first 10 Floors of New Aincrad are opened up for conquering (the Floor Bosses still need to be defeated to gain access to the the Floors though).
 * End of Fairy Dance Arc.

June

 * Meeting between Shinkawa Kyouji and Asada Shino.
 * Shino joined GGO.
 * Shino acquired "PGM Ultima Ratio Hecate II".

August

 * 1st “Bullet of Bullets ”.

September

 * 11th to 20th Floors of New Aincrad are opened up for conquering.

October

 * 2nd “Bullet of Bullets”.

November

 * Volume 5 - Prologue.
 * "Death Gun" Murders.

December

 * Volume 5 - Chapters 1, 2.
 * Volume 5 - Chapter 3.
 * Volume 5 - Chapters 4-6.
 * 3rd “Bullet of Bullets”.
 * Volume 5 - Chapter 7.
 * Volume 6 - Chapter 7.2.
 * Volume 6 - Chapters 8-10.
 * Volume 6 - Chapters 11.
 * Volume 6 - Chapter 12.
 * Volume 6 - Chapter 13.
 * Volume 6 - Chapters 14, 15.
 * The Shinkawa Brothers are arrested.
 * Kanemoto Atsushi escapes.
 * Volume 6 - Chapter 16.
 * The Phantom Bullet meet their end.
 * End of Phantom Bullet Arc.

December 16th

 * Sinon joined ALO.

December 24th

 * 21st Floor of New Aincrad unlocked.
 * The boss of the 21st Floor of New Aincrad is defeated by the 7 member party of Asuna, Kirito, Klein, Agil, Lisbeth, Silica and Leafa and other parties.
 * 22nd Floor of New Aincrad unlocked.
 * Kirito and Asuna leave their previously rented home in Yggdrasil City and reacquire their old wooden house that they had bought on the original Aincrad on the 22nd Floor.

December 28th

 * Volume 8 - "Caliber".
 * Kirito acquired the sword "Excaliber".
 * Lisbeth acquired the hammer "Mjölnir".

December 31st

 * Silica Side Story: A Spot of Sunshine in the Winter

January

 * 23rd, 24th, 25th, 26th and 27th Floors of New Aincrad are unlocked prior to the events of Mother's Rosario

January 6th

 * Volume 7 begins.

January 7th

 * Asuna duels with «Absolute Sword» Yuuki.
 * Asuna meets the members of the «Sleeping Knights»

January 8th

 * The boss of the 27th Floor of new Aincrad is defeated.

January 11th

 * Asuna meets Yuuki at the Yokohama North General Hospital

April

 * Volume 7 ends.
 * End of Mother's Rosario side story.
 * Accel World Volume 10 - "Versus "

May
May 18th
 * ME3 - "Ceramic Heart".

June

 * Beginning of Alicization Arc.

June 29th

 * Volume 9 - Alicization Beginning.
 * Kazuto is attacked by "Johnny Black".

July

 * Volume 10 - Alicization Running.

July 1st

 * Asuna contacts Rinko about Kirito having disappeared, and Kikuoka's possible involvement.

July 5th

 * Rinko arrives on the «Ocean Turtle»
 * Volume 11 - Alicization Turning.

July 6th

 * Volume 12 - Alicization Rising.
 * End of Alicization Arc.
 * Gaiden - "Cradle of the Moon".

August

 * Gaiden - "There is but one Ultimate way".

Underworld Timeline
Due to the Fluctlight acceleration function of the Soul Translator, the time in Underworld passes at a much different rate than in real life (the FLA rate can be set anywhere from 1,000 to 1,500 times the rate of the real world). Therefore, a different calender, called the Human World Calender (HWC), is used for events in Underworld. This calender only starts counting the time after Quinella created the Axiom Church though, so some events do take place before the HWC.

80 Before HWC

 * Underworld is created.
 * 4 RATH employees log in and start raising 2 families of 8 Artificial Fluctlights each.

68 Before HWC

 * The Artificial Fluctlights reach the age of 18 and start families of their own.
 * The 4 RATH employees log out one at a time under the guise of an "epidemic".

0 HWC

 * The Axiom Church is established.

361 HWC

 * Kirito first logs in into Underworld.
 * Eugeo is born.

7th Month of the HWC, 372

 * Prologue I
 * Kirito, Eugeo and Alice venture to the cave at the Mountain Range at the Edge.
 * Alice touches the soil of the Dark Territory.
 * The next day, Deusolbert Synthesis Seven comes to Ruild Village and takes Alice away to the Central Cathedral.
 * In the following 2 days, Alice arrives at the Cathedral and goes through a «Synthesis Ritual», having her previous memories erased and becoming an Integrity Knight.

3rd Month of the HWC, 378

 * Chapter 1
 * Kirito wakes up in Underworld after being injected with Succinylcholine by Kanemoto Atsushi (Johnny Black).
 * Kirito meets Eugeo for the first time after awakening in Underworld.
 * Selka ventures into the cave at the Mountain Range at the Edge and is captured by goblins.
 * Kirito and Eugeo catch up to Selka and fight the goblins. Eugeo is severely wounded but is healed with a Life transfer command.
 * Alice somehow makes an appearance as a spirit and tells Kirito that she is waiting for him and Eugeo at the Central Cathedral.
 * The Gigas Cedar is chopped down. Eugeo chooses his next Sacred Task to be a Swordsman.
 * Kirito chops off a single branch of the Gigas Cedar.
 * Kirito and Eugeo leave for Zakkaria.

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