Timeline

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Steins;Gate spans many world lines. This page is for various types of chronologies of the events depicted in the original story and spin-off material.

World Line Flow Chart

Chronological Tables

• History changes that are due to a D-Mail are marked with a " D".
  
• History changes that are due to time travel are marked with a " T".
  
• Actions that change the Worldline are marked with a ★
  
• Worldline changes perceived by Okabe due to his Reading Steiner are marked with a ☆

Common Chronology

※World lines other than α (Alpha) and β (Beta) may differ

Date	Event
1954	SERN is founded
1959	SERN Proton synchrotron completed
1959-1960	Eisuke Urushibara is born
1966-1967	Yukitaka Akiha is born
1967/01/13	Shouichi Makise (Doctor Nakabachi) is born
1973	SERN begins the "Z Program" for the purpose of time machine development
1975/06	IBN 5100s are for sale
1978/03/12	Tennouji Yuugo is born
1981	IBN PC goes on sale
1982/03	With the popularity of IBN PC, IBN 5100 is discontinued
1986	Nakabachi becomes serious about starting research on time machine theory
1989/06/28	Suzuki Isao (4℃) is born
1990/06/06	Moeka Kiryu is born
1991	•Itaru Hashida (05/19) and Rintaro Okabe (12/14) are born •Gulf War, collapse of the Soviet Union (Large world divergence)
1992/07/25	Kurisu Makise is born
1993	Rumiho Akiha (Faris NyanNyan) (04/03) and Luka Urushibara (08/30) are born
1994/02/01	Mayuri Shiina is born
1996/12/22	Tennouji ordered to Akihabara
1997/07/25	Tennouji in Japan, meets Tsuzuri Imamiya
1998	•Spring, Tennouji and Tsuzuri are engaged and expecting •Tennouji Nae is born on 11/09
1999	Okabe struck with a fever between the end of 1999 and the beginning of the year 2000
2000	Y2k bug (scare)（Large world divergence - Gamma splits off from the other known lines)
2001	•SERN: prototype time machine and LHC is operational; beginning of fourth phase of the Z-program (according to Jellyman's report) •During the summer, Tsuzuri Tennouji is expecting her second child •10/22, Tsuzuri's death
2003	Nakabachi leaves home
2004	Mayuri's grandmother dies
2005	•Okabe becomes the self-proclaimed "Mad Scientist Hououin Kyouma" (about half a year after Mayuri's grandmother's passing) •SERN: succeeds in mini black hole creation; end of fourth experimentation phase of Z Program
2006	•Kurisu is admitted to the Institute of Neuroscience at Viktor Chondria University •Moeka attempts suicide and responds to a Rounder recruitment mail
2007	Okabe and Daru are classmates (In the 2nd year, different classes)
2008	•02/12, Okabe and Daru receive a D-Mail •SERN official announcement of start of LHC experiments (ostensibly to study unknown particle reaction)
2009	•Okabe encounters Sena Aoi •09/01-11/04, New Generation Madness and 11/06, Shibuya quake (Chaos;Head)
2010	•Mid March, Future Gadget Lab is founded •At the end of March, Kurisu receives a letter from her father, and begins writing the time machine thesis •April, Mayuri becomes Lab Member 002 (within half a month of the lab's founding) •May, Daru becomes Lab Member 003 (Golden Week) •In June, Moeka starts searching for IBN 5100 in Akihabara •July, Kurisu Makise spends two weeks "reverse studying" at girls high school •In July, PhoneWave (name subject to change) complete, time machine function discovered by accident •7/23, The first D-mail is caught in Echelon's database •8/15 Summer Comima Day 1
2011/12/29	Winter Comima Day 1 Okabe meets Maho somehow
2017/09/27	Amane Suzuha is born

α (Alpha)

Date	Common	0.5710..%	0.5232..%	0.4569..%	0.4090..%	0.33....%
1975	T Suzuha begins search for an IBN 5100					Suzuha suffers amnesia
1986	Nakabachi participates in time machine research
1993				•D Jan., Luka's mom receives D-Mail •08/30, Luka is born female
1994/10/03	Suzuha calls off time machine research
1997	Tennouji comes under the care of Suzuha
1999						Suzuha regains her memory
2000	•Suzuha dies 04/03 •Akiha Yukitaka dies				•D Akiha receives kidnapping D-Mail •Sells IBN5100	•June, Suzuha writes letter •Suzuha commits suicide
2001	Faris dedicates the IBN5100 to Yanabayashi Shrine
2003/07/25	Nakabachi visits Akiha's home
2009/01/04	Luka is cleaning the main hall			Luka cleans the storehouse, breaks IBN5100 by accident, and hides it in a locker
2010/07/28	•T time machine appears (11:21) •Nakabachi's conference is cancelled •Faris attends meeting (around 11:26) •Moeka talks with Suzuha (around 11:27) •Mayuri arrives at the lab (around 11:33) •Daru at lab, watches anime, improves PhoneWave (name subject to change) (around 11:55) •Upon opening PhoneWave (name subject to change), discharge phenomenon •☆ Okabe arrives from β Worldline (around 12:48)
07/31			D Moeka obtains the IBN 5100
08/01		Okabe obtains the IBN 5100
08/03		★Lotto6 D-mail (Change to 0.571015%)
08/04		★Moeka's D-mail (change to 0.523299%)	☆ from 0.571015%
08/06			★Luka's D-mail sent (change to 0.456903%)	☆ from 0.523299%
08/07				★Faris's D-mail sent (change to 0.409420%)	☆ arrive from 0.456903%
08/08	First threat mail
08/09	Suzuha time travels to 1975					D Tailing Suzuha (during off-line meeting, D-mails trigger RS)
08/10					★D-mail sent to tail Suzuha (change to 0.337187%)	☆ arrive from 0.409420% (Kayano contacts FB)
Mid Aug.	•13th, Rainet AB Grand Champion finals •13th, Time Leap Machine complete •15th, FB & M4 die (survive in 0.57....%) •Mayuri dies •Rounder raid	•☆15th, from 0.523307% •★17th, deletion of first D-Mail (Change to β Worldline) •17th, Mayuri dies	•☆15th, from 0.456914% •★15th, D-Mail (change to 0.571046%) •15th, Bravo team takes the IBN 5100 to France •15th, Yugo Tennouji dies •15th, Moeka dies •16th, Mayuri dies	•☆14th, arrive from 0.409431% •★15th, D-Mail sent (change to 0.523307%) •15th, Mayuri dies (Attack does not occur, monitoring only)	•☆13th, from 0.337187% •★14th, send D-Mail (change to 0.456914% or Ω Worldline) •14th, raid •14th, Mayuri dies	•11th, second threat mail •13th, Rounder raid •13th, Mayuri dies •Daru repairing machine from 8/11-13 •Suzuha time travels to 1975 (or ★Okabe also time travels) •★13th, send D-Mail (change to 0.409431%)
Unknown				Luka and Okabe have a child
2011/12/21	Okabea and Daru's escape plan					Okabe and Daru returned to Japan, under surveillance
2011/12/29	Daru meets Yuki Amane					Okabe and Daru escape in Winter Comima Cosplay venue; start of Valkyrie Resistance
2020	Attractor field theory is proposed
2021	Okabe invents the divergence meter
2025	•Okabe: dies in Rounder attack •Daru: leader of Valkyrie		Nae kills Okabe, time leaps to the past	Okabe dies (Rounders unrelated)
2033	Daru dies in Rounder attack			Daru dies (Rounders unrelated)
2034	•Suzuha(16) fails to assassinate Kurisu •SERN completes time machine •Kurisu dies
2036	•09/27, Suzuha(18): mother shows her movie letter from father giving her the time machine •Yuki Amane is killed by Rounder attack •Suzuha time travels to 2010/07/28

• Divergence 0.571024% Main work's starting point in Alpha, Character Song CDs mini drama (except Okabe)
  
• Divergence 0.571015% Lotto 6 world
  
• Divergence 0.523299% Moeka obtains the IBN5100 world
  
• Divergence 0.456903% Lukako is female world
  
• Divergence 0.409420% Faris's papa survives world
  
• Divergence 0.337187% Suzuha commits suicide world, Rebellion of the Missing Ring
  
• Divergence 0.409431% Suzuha dies of illness world, Rebellion of the Missing Ring
  
• Divergence 0.456914% Faris's papa dies in plane accident world
  
• Divergence 0.523307% Luka is male, Braunian Motion of Love and Hate
  
• Divergence 0.571046% Moeka does not obtain the IBN5100, Linear Bounded Phenogram (Mayuri), Steins;Gate: Babel of the Grieved Maze (audio drama)
  
• Divergence 0.000000% Suzuha's original world, Rebellion of the Missing Ring
  

Divergence 0.337199% Linear Bounded Phenogram (Okabe: "Jekyll on lines")

• Divergence 0.328403% Linear Bounded Phenogram (Kurisu)
  
• Divergence 0.337337% Linear Bounded Phenogram (Suzuha)
  
• Divergence 0.456923% Linear Bounded Phenogram (Luka)
  
• Divergence 0.509736% Linear Bounded Phenogram (Moeka)
  
• Divergence 0.337161% Linear Bounded Phenogram (Nae)
  
• Divergence 0.334581% The Distant Valhalla

β (Beta)

Date	Common	1.129848%	1.130205%	Time traveling	1.130212%
1975	•T Suzuha moves first to this time •Obtains IBN5100
2000/04/03	Yukitaka Akiha dies
2000/11/02	T John Titor appears on American forum
2001	•March, John Titor disappears from forum •During a dawn, Faris dedicates IBN5100
2001/03/24	T(0:00), Suzuha moves to 2010/8/21
2010/03/28	Kurisu - ideas related to Amadeus
2010/07/28	•Daru working on the PhoneWave (name subject to change) (11:21 or later) •T Time machine appears(11:50) •Nakabachi’s conference begins(12:00) •Mayuri loses metal Upa(12:00) •Kurisu and Okabe first meeting •Kurisu takes Okabe out of the hall (about 15min. after meeting) •D “Noise” movie mail received(12:26) •Conference ends (around 12:26) •Kurisu dies(12:39); scream heard •Okabe witnesses fallen Kurisu •★1st D-Mail sent(move to α Worldline)			•(Before failure) ☆ T from 1.130205% 8/21, evening •T to 8/21, evening •(After failure) D Okabe receives movie mail successfully •(Second attempt) ☆ T from 1.130212% 8/21, evening •T Mayuri loses plastic Upa •T Bloodied Kurisu •T to 8/21, evening
2010/08/01	Okabe obtains IBN5100
2010/08/15			•Mayuri cosplays herself at Comima •Daru meets Yuki Amane
2010/08/17	☆ Returns back from drifting in α Worldlines		☆ arrives from α Worldline(0.571046%)
2010/08/21	•Back from drifting Okabe dismantles PhoneWave (name subject to change) and IBN5100 •Nakabachi defects to Russia	•T Suzuha appears in C203 •★ Okabe and Suzuha travel to 2010/07/28	•T Suzuha C204 appears in C204(17:56) •★ Okabe and Suzuha travel to 2010/07/28 in C204 •T From the C203 2011 Mayuri calls 2010 Mayuri	•(After failure) ☆ return from 7/28 •T Mayuri slaps Okabe (Worldline shifts to 1.130212% from this point on) •D Watches movie mail from Future Okabe •★ Okabe and Suzuha time travel a second time	★ Nakabachi’s paper burns (change to SG)
2010/09	(Only in 1.130238% Okabe and Mayuri become lovers)
2010/11
2011/01		Police matter: Suzuha turns gun on Okabe (Deadline to make a round trip with 344 days worth of fuel is Jan. 16th)
2011/07/07		•(Deadline for a one-way trip with 344 days worth of fuel) •Mayuri hears about her future from Suzuha •★T Suzuha and Mayuri go to 2010/8/21 in C203 (change to 1.130205%)	•T Suzuha and Mayuri travel to 2010/08/21 in C204 •☆ Okabe from 1.129848% faces time travel research
2012	Daru meets Yuki Amane
Around 2025	•WWIII •The Great Tokyo Air Raid
2025	Okabe dies	Okabe dies protecting Mayuri during a robbery	•Okabe sends D-Mail to 8/21 •Entrusts Operation Skuld to Daru and Suzuha
2030/04	Suzuha joins the military by universal conscription
Unknown	•Yuki dies •Suzuha withdraws from the military
2036	Daru completes the time machine	Daru completes the C203	Daru completes the C204
2036/08/13	Suzuha time travels to 1975	Kagari on board

※ During time travel to 2010/7/28 a fluctuation of 0.000001~0.000003% occurs

• Divergence 1.130426% Game’s starting world, Okabe's character song CD mini drama
  
• Divergence 1.129848% Epigraph Trilogy
  
• Divergence 1.130205% Kurisu ending world, Chapter 11 world, Steins;Gate: Arc Light of the Point at Infinity
  
• Divergence 1.130206~1.130208% Time traveling (8/21→7/28)
  
• Divergence 1.130209~1.130211% Time traveling (7/28→8/21)
  
• Divergence 1.130212% Chapter 11 world (after face slapping), Steins;Gate: Arc Light of the Point at Infinity (after face slapping)
  
• Divergence 1.130238% Mayuri Ending world

Steins Gate Worldline (See also the SciADV timeline)

Date	1.048596%
Around 2010/07	•Moeka is fired from Arc Rewrite •Nae is in a bike and traffic accident •Tennouji accepts Moeka as part-timer at CRT shop
2010/07/28	•Mayuri loses plastic Upa •Kurisu reports Nakabachi for stabbing someone
2010/08/01	Okabe and Moeka search together for IBN5100
2010/08/21	•PhoneWave (Name subject to change) dismantled •Nakabachi paper burns, Nakabachi arrested in Russia •☆ Okabe gets off of the time machine bloody, time machine disappears, Okabe watches TV in ambulance, then hospitalized
Around 2010/09	Luka’s cosplay event and sudden rise to fame as cosplayer
Last third of 2010/09	•Okabe discharged after living in the hospital for a month, reunited with Kurisu in Akihabara
2010/12/14	•Okabe receives mail from Kurisu on his birthday •Kurisu is busy every day in Arizona
Mid 2010/12	A letter arrives at the lab from Kurisu addressed to Okabe
2010/12/24	Searching through Akihabara, Christmas party
Around 2012 and 2013	Events of Chaos;Child: Children Collapse
Unknown	SERN freezes time machine development research and transitions to BHB bomb development research
Around 2015/09	Crash of 2015
2015/09/07	Events of Chaos;Child in 2015 Return of the New Generation Madness.
2015/11/06	Daru at the lab consents to Mio Kunosato’s request for refuge
2017/09/27	Suzuha Amane is born
2019/04	Nae joins the JAXA Chofu Aerospace Center, assigned to the R&D headquarters Unexplored Technology Research Center
2019/07/30	Nae is dispatched to TNSC in Innovative Robotics Technology Research Support Operations & "abducts" Chuuou Tanegashima high school robot research club members
2019/08/31	Robotics;Notes events in 2019-2020 Nae returns home to Tokyo for one month to negotiate budget with head office, often goes to Akihabara in the weekends (09/22, 27)
2019/10	SERN's BHB is stolen
2019/12/27	Daru holds a home party with circle friends (Labmems?)
2020/02/26	Okabe(?) convenes Labmems -Kurisu is unable to participate as she is in the US- & Operation Lævateinn; Nae rescues Frau Koujiro
2020/02/28	Daru provides DG297 3rd EDTION ver.4.11 & antivirus; Nae is in charge of TNSC Capture B squad rush troops

• Divergence 1.048596% True ending world, “Holy Day of the Calamitous Birth”, Shouninkyoumei no Pardon, Shouninkyoumei no Souvenir, “Tomorrow in a Box”

References

A large portion of the Chronological Tables section is translated from one of the Japanese language Steins;Gate wikis (view source).