Unified Story Timeline

This is a list of events in Toaru Majutsu no Index listed in a timeline fashion.

Autumn to Winter

 * Toaru Kagaku no Railgun Extra Volume
 * Shirai Kuroko meets Uiharu Kazari in Judgment Training School.
 * Kazari and Kuroko are dragged into a commotion brought up by robbers in a post office.
 * The robber with the "Equal Speed" ability injures Kuroko; meanwhile, she receives unexpected assistance from Misaka Mikoto and Kuroko successfully apprehends the robbers.
 * At this time, Kuroko discovers that she can teleport herself.

Third Week

 * Toaru Majutsu no Index Light Novels Volume SS2
 * The activities of Skill-Out leader Komaba Ritoku attracts the attention of Yomikawa Aiho. Hattori Hanzou falls in love with Yomikawa. (At this time, the hunt for Level 0 Espers have noticeably increased.)

First Week

 * Kanzaki Kaori cooperates with a perverse jeans shop owner to pursue a Valkyrie who likes to tear up jeans.

Fourth Week

 * Kamijou Touya meets Barbina, a seller of magical souvenirs, and later, Lidvia Lorenzetti. Lidvia gives him an addition to his magical relic collection.

March 15

 * The seventh Level 5, Sogiita Gunha, fights against Skill-Out to save Haratani Yabumi.

First Week

 * In Brazil, Misaka Tabikake meets an impoverished girl named Ines and follows her advice of setting up a business of collecting rare metals.

Fourth Week

 * Shirai Kuroko enrolls into Tokiwadai Middle School and meets Misaka Mikoto.
 * Kuroko talks with people inside a hairdressing salon in Sakashima Wayside concerning Gemstones and the Stargate Project.

Second Week

 * Ollerus visits a town in Milan in Italy to destroy an organization that specializes in human trafficking.

May 11 (three months before August 11)

 * Toaru Kagaku no Railgun Manga Chapter 20
 * Misaka 9982 is produced.
 * A female researcher inside a scientific facility orders MISAKA clones to dispose the remains of a handful of clones killed in past experiments.

Fourth Week

 * Hamazura Shiage suspects SHINOBI Soldier Hattori Hanzou of planning a covert extermination in their district.

Second Week

 * Kuyama Kihan challenges the Goalkeeper System, is defeated.

June 17 (one month before July 17)

 * Toaru Kagaku no Railgun Manga Volume 3
 * Kuroko become roommates with Mikoto after forcing her previous roommate to move.
 * Mikoto meets Kamijou Touma for the first time after he tries to save her from delinquents and accidentally enraging her. Mikoto would later meet Touma again several times trying to fight him after this event.

First Week

 * In a bar-room in London, Kamijou Touya meets Misaka Tabikake and a certain Mr. Tanaka by chance.
 * A female girl, a Gemstone, flees from her pursuants; in the end, she hijacks a Cessna which then explodes, possibly killing her.

Second Week

 * Kumokawa Seria contacts one of Academy City's directors Kaizumi Tsugutoshi and they had a conversation regarding treatment of Gemstones.
 * Kamijou Touma meets Seria by chance after seeing her praying alone in the rain coming from a sprinkler.

July 16

 * Toaru Kagaku no Railgun Episode 01 (Morning)
 * Shirai Kuroko responds to the emergency call of a robbery initiated by a group of robbers led by a Level 3 Pyrokinesist, interrupting Misaka Mikoto's first day hanging out with their new friends Uiharu Kazari and Saten Ruiko.
 * The Level Upper Arc begins.

July 17

 * Toaru Kagaku no Railgun Episode 02 (Morning)
 * Konori Mii, mistaking Misaka Mikoto for a new recruit, takes the latter into a hands-on tour on being a member of Judgment.
 * Toaru Kagaku no Railgun Episode 03 (Evening to Night)
 * Kamijou Touma shops for dinner in a convenience store and is confronted by Misaka Mikoto, challenging him to a fight against her. The fight leaves Touma fleeing from Mikoto through the night.

July 18

 * Toaru Kagaku no Railgun Episode 04
 * Level 3 "Synchrotron" Katabira Kushiro is linked to the incidents of explosions that alarmed District 7.
 * Saten Ruiko's first-ever appearance.

July 19

 * The Index Arc begins.

July 24

 * The Level Upper Arc ends.

July 28

 * Tree Diagram is destroyed.
 * Index Arc ends.