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:''Dates use the day of the [[Cylon Holocaust]] as a baseline. See also [[Survivor Count]], [[History of the Twelve Colonies]].''
{{timeline series}}


==Ancient History==
This article plots the events which were shown or mentioned in the history of [[The Twelve Colonies of Kobol|the Twelve Colonies]] from the [[Re-imagined Series]] and [[Caprica (series)|Caprica]].
*'''-21,354 Years:''' The [[Wikipedia:Epoch (reference date)|epoch]] of the calendar system used in [[#Analysis of Colonial Dates|Adama's dossier]].
*'''-3600 Years:''' [[Pythia]] records her prophecies.
*'''-2000 Years:''' The thirteen tribes leave [[Kobol]]: twelve for the star system containing the [[Twelve Colonies (RDM)|Twelve Colonies]], the other for [[Earth]].  The [[The Twelve Colonies (RDM)|Twelve Colonies]] are first settled.  As a result of their exodus, the refugee settlers enter into a new dark age during which much of their past knowledge of history and technology is lost. 
*'''~2000 Years to -52 Years:'''  Over the next few centuries the Twelve Colonies recover, then thrive, and eventually start competing with each other in various wars and shifting alliances, which had been going on since several hundred years before the Re-Imagined Series begins.


==Recent Colonial History==
By convention, all dates are relative to the [[Fall of the Twelve Colonies]]. Events before the Fall are marked as "BCH," or "Before Cylon holocaust". Given the few and somewhat contradictory dates about the Colonials' ancient history and the exodus from Kobol, that part of the timeline is speculative.
*'''-64 Years:''' [[William Adama]] born in Qualai, Caprica.
*'''-55+ Years:''' Setting for the proposed series [[Caprica (series)|Caprica]], which is to be set more than 50 years prior to the events of "Battlestar Galactica" and focus on the lives of two families: the Adamas and the Graystones. The Twelve Colonies are at peace and on the verge of a technological breakthrough: the first Cylon.
*'''-52 Years:''' Cylon revolt begins the [[Cylon War]]. [[Articles of Colonization]] signed ([[Colonial Day]], [http://blog.scifi.com/battlestar/archives/2005/04/index.html#a000025 RDM, April 11, 2005]).
*'''-51 Years''' Colonials suffer a major defeat when the Colonial ship ''[[Brenik]]'' is lost after a boarding action by Cylon Centurions, which resulted in some of the bloodiest, hand-to-hand fighting of the war.  A young Petty Officer [[Saul Tigh]] is one of a handful of survivors. 
*'''-50 Years:'''
** [[Battlestar]] ''[[Galactica]]'' enters service under Commander [[Nash]].
*'''c. -41 years:''' [[William Adama]] begins his service in the Colonial Fleet as a Viper pilot, near the end of the Cylon War.
*'''-40 Years:''' Armistice between the Colonials and the Cylons ends the [[Cylon War]].
*'''-34 Years:''' William Adama resigns from the Colonial Fleet after the Armistice is declared ([[Hero]]).
*'''-20 Years:'''
**Last significant [[FTL|Jump]] recorded on battlestar ''[[Galactica]]'s'' logs.
**[[Tom Zarek]] imprisoned for blowing up a government building on [[The Twelve Colonies (RDM)#Sagittaron|Sagittaron]] ([[Bastille Day]]).
**[[William Adama]] and [[Saul Tigh]] first meet ([[Scattered]], podcast).
*'''-17 Years:''' William Adama reinlists in the Colonial Fleet at the rank of Major.
*'''-11 Years:''' Major William "Husker" Adama assigned to the Battlestar ''[[Atlantia (RDM)|Atlantia]]''.  While serving aboard ''Atlantia'' he conducts his 1000th landing.
**[[Laura Roslin]] begins her career in politics ([[Litmus]]). 
*'''-7 Years:''' [[Saul Tigh|Saul]] and [[Ellen Tigh]] marry. ([[Kobol's Last Gleaming, Part I]], [http://www.scifi.com/battlestar/episodes/season01/112/deleted1.html deleted scene])
** William Adama promoted to Colonel and is assigned to the Battlestar ''[[Columbia (RDM)|Columbia]]'' as XO.
*'''-5 Years:'''
**[[Laura Roslin]]'s last breast exam prior to her cancer diagnosis ([[Act of Contrition]]).
**[[Galen Tyrol]] assigned to ''Columbia'' under Col. Adama ([[Litmus]]).
*'''-3 Years:''' [[Felix Gaeta]] assigned to ''Valkyrie''.
** William Adama is promoted to Commander and assigned to the Battlestar ''[[Valkyrie]]''.
** Saul Tigh is promoted to Colonel and assigned to ''Valkyrie'' as Adama's XO.
** Galen Tyrol assigned to ''Valkyrie''.
*'''-2 Years:'''
**[[Caprica Six]] begins residence on Caprica ([[Downloaded]]), first encounters Dr. [[Gaius Baltar]] ([[Miniseries]]).
**[[Sharon Valerii (Galactica copy)|A copy of Sharon Valerii]] begins serving aboard ''Galactica'' ([[The Farm]]).
**[[Zak Adama]] dies in a flight school accident. His funeral is Lee and William Adama's last meeting until the miniseries.
**Lt. [[Kara Thrace]] is re-assigned from Flight School to ''Galactica'' ([[Act of Contrition]]).
*'''-1 Year:''' Last time [[William Adama]] and [[Caroline Adama]] speak.
** William Adama leads the Battlestar ''[[Valkyrie]]'' on a recon mission to slip a [[Stealthstar]] across the [[Armistice Line]].  The mission fails and the Stealth Star's pilot, [[Daniel Novacek]] is shot down and captured by the Cylons. ([[Hero]])
** William Adama, Saul Tigh, Felix Gaeta (and possibly others) are re-assigned to the aging Battlestar ''Galactica'' as a result of the failed Stealth Star mission.
*'''-Several months''' [[Caroline Adama]] gets engaged.
*'''-3 Weeks:''' [[Anastasia Dualla]] last visits her home.


===Events of the [[Miniseries]]===
The Cylon holocaust occurs more than 150,000 years ago.
*'''Day 1:''' Begins with the Cylon attack on [[Armistice Station]] and culminates with ''Galactica's'' fleet leaving the star system of the [[The Twelve Colonies (RDM)|Twelve Colonies]] during the [[Battle of Ragnar Anchorage]].
**'''Zero Hour:''' Cylons [[Fall of the Twelve Colonies|destroy]] the Twelve Colonies. The (so-far-known) only known survivors are a rag-tag fugitive fleet escorted by ''Galactica''; ''Pegasus'', another [[Pegasus (RDM)|isolated battlestar]]; a fleet of 15 civilian FTL-capable ships; and the human [[Caprica Resistance|resistance]] on [[The Twelve Colonies (RDM)#Caprica|Caprica]].


==Season 1==
==Ancient History==
*'''Note:''' Timeline assumes that the days shown on [[Caprica]] with [[Helo]] corresponds to the timeline on ''Galactica''.  A strong example of this is in the season 1 finale "[[Kobol's Last Gleaming, Part II]]", when [[Kara Thrace|Starbuck]] travels from Galactica to Caprica.''
:''See also: [[History of the Twelve Colonies]], [[Sacred_Scrolls#Analysis|Sacred Scrolls]]''
==="[[33]]" through "[[The Hand of God (RDM)|Hand of God]]"===
*'''Unspecified time period:''' Humans on the planet {{RDM|Kobol}} organize themselves into twelve tribes {{TRS|Miniseries}}. According to [[Sacred Scrolls|at least one scripture]], they "live in utopia with the gods." The humans become sufficiently advanced to establish viable space travel and artificial, robotic life. Artificial life-forms, machines similar in nature to the later day Cylons, are created by the humans. A war against the machines occurs. At one point the machines evolve and take humanoid form, either before, during or after the war.  This group of humanoid Cylons are later referred to in the Sacred Scrolls as the "[[Thirteenth Tribe (RDM)|Thirteenth Tribe]]," although said text does not specify that they were a tribe of Cylons {{TRS|Sometimes a Great Notion}}.  
*'''Day 6:''' ''Galactica'' pursued by the Cylons for six days. The ship ''[[Olympic Carrier]]'' is discovered to be the source of the problem, it is destroyed when nuclear weapons are detected aboard ([[33]]).
*'''Over 17,000 years BCH:''' A supernova creates the [[Ionian nebula]].
*'''Day 7:''' First new child born on the ''[[Rising Star]]''. ''Pegasus'' encounters a fleet of 15 civilian ships, including ''[[Scylla]]''.
*'''ca. 4,000 years BCH:''' The Thirteenth Tribe reportedly leaves Kobol and builds the [[The Temple of Five|Temple of Hopes]] on [[Algae planet|another planet]] <ref name="kobol">Tyrol says that "Our initial radiocarbon dating suggests that the temple's at least 4,000 years old, which lines up with the exodus of the Thirteenth Tribe." {{TRS|The Eye of Jupiter}}. This is the oldest date noted in the series's timeline, but also conflicts with the prior date of Pythia and her works as described by [[Elosha]] in "[[Kobol's Last Gleaming, Part I]]," where she states that the exodus of '''all 13 tribes''' occurred approximately 2,000 years ago.</ref>  This contradicts [[Ellen Tigh]]'s statement that the temple was built 3,000 years ago {{TRS|No Exit}}. They pray for guidance and are shown the way to [[Earth (RDM)|Earth]], the planet they colonize.
*'''Day 10:''' President Roslin makes her first official visit to ''Galactica''. During an unrep procedure, ''Galactica''’s water tanks are destroyed by sabotage from Cylon agent Sharon Valerii and the majority of its water is vented into space.  ''Galactica'' commences an immediate search of the surrounding star systems for drinkable water and finds an ice moon ([[Water]]).
*'''ca. 3,600 years BCH:''' [[Pythia]] records [[Sacred Scrolls#The Book of Pythia|her prophecies.]] Aside from reports of the landing on Earth and drawings of [[Temple of Aurora|temple]]s there, this book describes "the exile and rebirth of the human race" and a "dying leader" not making it to a "promised land," though how long before her writings that such events took place is not revealed.
*'''Day 12:''' Representatives from the government led by Lee Adama visit the ''[[Astral Queen]]'' to enlist the aid of its prisoner population to help mine water from the ice moon. They find themselves embroiled in a plot by former terrorist [[Tom Zarek]] to capture the ''[[Astral Queen]]'' and demand a civil ransom from President Roslin.  The stand-off ends with one prisoner killed when Colonial Marines storm the ship. Lee Adama brokers a deal with Zarek to turn the ship over to  him and to convince Roslin to hold an election in exchange for peace and co-operation with the government ([[Bastille Day]]).
*'''ca. 3,000 years BCH:''' A [[Lion's Head beacon|beacon]] is left at the [[Lion's Head Nebula]], later marking the way to Earth. At some undated point, someone travels from [[Earth (RDM)|Earth]] to Kobol, passing on information about Earth, including a map of its night sky <ref>Adama says that "According to Cottle, the [[Lymphocytic encephalitis|virus]] was an exact match to one reported over 3000 years ago, right around the time that the 13th colony left Kobol" {{TRS|A Measure of Salvation}}. This contradicts the two other dates of 2,000 and 4,000 years. While the dating is uncertain, it is the only clue to the beacon's age. That someone traveled back to Kobol is speculation, but an explanation for how Earth's sky could be displayed there. If true, it is still unknown on which of these two voyages the beacon was left behind.</ref>
*'''Day 14:''' An accident on the hangar deck kills 13 pilots.  Starbuck is ordered by Adama to train [[nuggets|replacements]]. Starbuck goes missing after [[Skirmish over the Red Moon|a battle with a Cylon recon force]]. ([[Act of Contrition]]).
*'''ca. 3,000 years to 2,000 years BCH:''' The humanoid Cylons of the Thirteenth Tribe prosper and begin to reproduce sexually. The technology of "[[Resurrection (RDM)|organic memory transfer]]," or downloading, is abandoned.
*'''Day 15:''' Adama searches for Starbuck against the recommendation of Col. Tigh and President Roslin.  Starbuck survived on the red moon of the ice planet system for over 48 hours before locating the Raider she shot down.  She trains herself how to fly it then uses it to return to ''Galactica'' ([[You Can't Go Home Again]]).  
**The Thirteenth Tribe produce their own mechanical Centurions to act as laborers for their civilization.
*'''Day 17:''' A copy of [[Aaron Doral]] sneaks aboard the ''Galactica'', steals several blocks of [[G-4]] and G-4 detonators from a small arms locker then blows himself up near Baltar's lab.  An independent tribunal is set up to investigate and focuses its attention on Galen Tyrol and Sharon Valerii. Specialist [[Socinus]] is jailed for lying under oath to protect Tryol and Adama overturns the tribunal when he feels it has become a "witch hunt" ([[Litmus]]).
*'''ca. 2,000 years BCH:''' (''The order of events on Kobol and Earth is uncertain.'')
*'''Day 21:''' First recollection by any of the ''[[Rising Star (RDM)|Rising Star]]'' crewmembers of giving [[Ellen Tigh]] medical assistance ("about a week" before "[[Tigh Me Up, Tigh Me Down]]").
**[[Samuel Anders]], [[Tory Foster]], [[Ellen Tigh]], [[Saul Tigh]], and [[Galen Tyrol]], later collectively known as the "Final Five," are born on Earth.
*'''Day 24:''' [[Sharon Valerii (Caprica copy)|Caprica Valerii]] and [[Karl Agathon|Helo]] first make love.  A copy of Number Six appears aboard the ''Galactica'' introducing herself as "[[Shelly Godfrey]]" and presents doctored evidence to Commander Adama implicating Dr. Baltar in the attack on the Colonies.  When her story is debunked and evidence suggesting she may be a Cylon agent begins to mount she disappears as quickly and mysteriously as she appeared ([[Six Degrees of Separation]]).
**The Final Five work together in a research lab attempting to re-develop downloading technology.  The effort is spearheaded by Galen Tyrol and Ellen Tigh.
*'''Day 25:''' A copy of [[Leoben Conoy]] surfaces on the [[Gemenon Traveler]] claiming he has hidden a nuclear device somewhere in the fleet but will not say where. Kara Thrace is brought in to interrogate him and she eventually makes him confess the bomb story was a lie.  He is then thrown out an airlock on President Roslin's personal order ([[Flesh and Bone]]).
**All five Cylons receive visions of beings nobody else can see warning them of an impending rebellion by Earth's Centurion population.  The Final Five prepare a resurrection ship and leave it in orbit.
*'''Day 26:''' Ellen Tigh resumes consciousness ("a couple of days" before [[Tigh Me Up, Tigh Me Down]]).
**The remaining Twelve Tribes leave Kobol and settle the [[Twelve Colonies of Kobol|Twelve Colonies]]<ref name="kobol"/>.
*'''Day 28:''' William Adama travels to the ''Rising Star'' and brings [[Ellen Tigh]] aboard the ''Galactica'' to reunite with Saul.  Ellen later spends most of an uncomfortable dinner party with President Roslin grilling Adama on the subject of the then-fictitious Earth. When she is tested by Dr. Baltar's Cylon Detector, Baltar claims her results came back green but then later reveals to Number Six that everyone is going to be greenlit from now on reguardless of what the results say ([[Tigh Me Up, Tigh Me Down]]).
**Lord of Kobol "Athena" kills herself in despair over this. A [[Tomb of Athena|tomb]] is built for her containing a 3-D projection showing Earth and its Zodiac.  The projection is activated by the Arrow of Apollo, which travels with the twelve tribes.
*'''Day 36:''' With the Fleet running low on Tylium fuel, Adama begins scouting near-by systems for asteroids rich in Tylium ore.  One system is found but a heavily fortified Cylon mining outpost is discovered there. ''Galactica'' engages the Cylons a [[battle for the Tylium Asteroid]] and destroys the mining base.  Caprica Valerii begins showing the first signs of pregnancy and suffers morning sickness ([[The Hand of God (RDM)|The Hand of God]]).
**The Centurion uprising occurs and the Thirteenth Tribe exterminates itself in a nuclear holocaust.  Earth is left a nuclear wasteland. The Final Five die in the attack, and are resurrected on board their orbiting ship.
**The Final Five begin a journey back to Kobol to find the other twelve tribes and inform them of Earth's fate. They are aware of the cyclical nature of history and believe that the twelve tribes will create Cylons again. They want to warn them to treat them right.  However, their ship is not equipped with a conventional FTL drive and journeys at relativistic sublight speeds.
*'''2,000 years to 52 years BCH:''' The Twelve Colonies grow and prosper. Each colony acts as a sovereign nation, complete with inter-colonial wars.
**The Final Five stop at the Temple of Hopes as they retrace their tribe's path.
**The Final Five arrive at Kobol, finding the planet abandoned.  They continue on in pursuit of the twelve tribes, heading toward the colonies.


===[[Colonial Day]]===
==Recent Colonial History==
 
*'''Day 46:''' Delegates selected for the [[Quorum of Twelve]].  [[Tom Zarek]] selected to represent [[The Twelve Colonies (RDM)#Sagittaron|Sagittaron]]. Roslin implores Adama to permit his participation. [[Valance]] prepares to smuggle a ceramic stealth gun into the ''[[Cloud Nine]]''. Zarek addresses the fleet from the prison ship [[Astral Queen]]. Gaius Baltar selected to represent [[The Twelve Colonies (RDM)#Caprica|Caprica]]. Apollo and Starbuck inspect the [[Cloud Nine]].
 
*'''Day 47 - Morning:''' Colonial Day. Delegates arrive on Cloud Nine. Roslin addresses the Quorum. Baltar eyes [[Playa Palacios]]. Zarek moves to elect a vice president and is nominated by [[Marshall Bagott]]. Motion passes, chair to remain open 72 hours for nominations.
 
*'''Day 47 - Afternoon:''' Roslin asks [[Wallace Gray]] to run for the vice presidency. Zarek expounds on his reform agenda. Valance scuffles with Apollo and Starbuck and is remanded in custody. Helo and Caprica Valerii arrive at a spaceport in the vicinity of [[Delphi]].
 
*'''Day 47 - Evening:''' Starbuck and Apollo interrogate Valance to no effect.
 
*'''Day 48 - Morning:''' Grey addresses the Quorum. [[Safiya Sanne]] changes [[The Twelve Colonies (RDM)#Picon|Picon]]'s vote to Zarek, bringing his total to 5 of 12.
 
*'''Day 48 - Afternoon:''' Zarek serves [[Ellen Tigh]] a drink and inquires after the whereabouts of Valance. Baltar interviewed by [[James McManus]]. Valance found dead. Tigh, Apollo and Starbuck consult with Roslin on security.
 
*'''Day 48 - Evening:''' Roslin travels to ''Cloud Nine'' and asks Grey to drop out of the race and recruits Baltar to replace him, interrupting his "exclusive" with Palacios. Apollo and Starbuck flirt in the bunk on ''[[Galactica]]''.
 
*'''Day 49 - Morning:''' Baltar elected Vice President, with Roslin casting the tie-breaking vote.
 
*'''Day 49 - Evening:''' Victory party for Baltar. Roslin dances with Adama, Ellen with Saul Tigh, Billy with Dualla, Starbuck with Apollo and Baltar.
 
*'''Day 49 - Night:''' Helo and Caprica Valerii infiltrate the spaceport. Helo discovers Valerii is a Cylon and flees.
 
''Note: Roslin states that the chair will remain open for nominations for 72 hours on the morning of Day 47, but the [[Kobol's Last Gleaming, Part II|next episode]] clearly takes place the day after the victory party, and is stated to take place on Day 50. Perhaps the Quorum moved to close the nomination period early after the nomination of a strong candidate.''
 
===[[Kobol's Last Gleaming, Part I]]===
*'''Day 50 - Early Morning:''' Apollo and Adama spar. Baltar and Starbuck have sex. Caprica Valerii catches up with Helo at [[Delphi]], and he shoots her. ''Galactica'' Boomer contemplates suicide. [[Cottle]] examines Roslin and gives her "six months, at the outside".
 
*'''Day 50 - Morning:''' Starbuck and an (already) drunken Baltar exchange innuendos over the officer's card game.
 
*'''Day 50 - Afternoon:''' Roslin briefs Baltar on her economic agenda. [[Number Six|Six]] warns him that "it's not safe to remain on ''Galactica''". ''Galactica'' Boomer and Crashdown stumble upon [[Kobol]]. Helo holds Caprica Valerii at gunpoint. Apollo and Starbuck exchange blows.
 
*'''Day 50 - Evening:''' Roslin examines an orbital photograph of Kobol and has a vision of the [[City of the Gods]]. Adama decides to send an expedition, which Baltar demands to accompany. ''Galactica'' Boomer shoots herself on Baltar's advice. In private, Roslin unsuccessfully petitions Commander Adama to send the Cylon Raider after the [[Arrow of Apollo]] on [[The Twelve Colonies (RDM)#Caprica|Caprica]].
 
*'''Day 50 - Night:''' [[Battle of Kobol (RDM)|Battle of Kobol]] begins. Scout party ambushed by a [[Cylon Basestar]] at Kobol. Starbuck devises a plan to deliver a nuclear weapon to the [[Basestar (RDM)|basestar]] using the captured [[Cylon Raider|Raider]] and [[Cylon transponder]]. Roslin convinces her to purloin the Raider and take it to Caprica instead.
 
===[[Kobol's Last Gleaming, Part II]]===
*'''Day 51 - Early Morning:''' Survivors of [[Raptor 1]] escape the wreck. Baltar passes out. Adama terminates Roslin's presidency. Apollo and Tigh plan an assault on ''[[Colonial One]]''. Adama dispatches the wounded Boomer to take out the basestar. Caprica Valerii leads Helo to [[Delphi Museum of the Colonies]].
 
*'''Day 51 - Morning:''' Starbuck arrives at Caprica, retrieves the [[Arrow of Apollo]], kills a copy of [[Number Six|Six]] and meets up with Helo. ''Galactica's'' [[Marines|marines]] board ''[[Colonial One]]''. Apollo mutinies, Roslin stands down. Baltar has a vision of the shape of things to come. ''Galactica'' Boomer confronts other Valerii copies on the basestar. She returns from her mission and shoots Commander Adama.
 
==Season 2.0==
''Note: Season 2 dates are rough guesses at best, and are complicated by the [[season two timeline discontinuity]]. Dates for the first half of the season are based on the last dates given at the end of season one.
 
==="[[Scattered]]" through "[[The Farm]]"===
*'''[[Scattered]]'''
*'''Day 51 - Morning:''' A [[Cylon Basestar]] ambushes the fleet, which jumps to an [[Emergency Jump Coordinates| emergency rendezvous point]]. ''Galactica'' jumps to different coordinates and is forced to backtrack. [[Battle of Kobol (RDM)#Scattering of the Fleet|''Galactica'' holds off basestar]] and returns to bulk of the Fleet.
*'''[[Valley of Darkness]]'''
*'''Day 51 - Morning:''' ''Galactica'' is partially disabled by a Cylon [[Virus|virus]] while a [[Cylon Centurion]] boarding party attempts to [[Battle of Kobol (RDM)#Cylon Boarding|commandeer the ship]].
*'''[[Fragged]]'''
*'''Day 51 - Afternoon:''' [[Crashdown]] is shot by [[Gaius Baltar]] on Kobol after threatening to shoot [[Cally]].
*'''[[Resistance (episode)|Resistance]]'''
*'''Day 52:''' Tigh interrogates Tyrol and imprisons him with [[Sharon Valerii (Galactica copy)]] ([[Resistance (episode)|Resistance]]).
*'''Day 53 - Morning:''' [[Cally]] blackmails Baltar into running his Cylon test on Tyrol. Baltar notes to Tigh that he should assume Roslin's duties; he invites Baltar to join her in the brig. ''[[Aturian]]'' stops refining Tylium in protest of Martial law. Apollo briefs pilots in the ready room. Dualla checks out his ass. On Caprica, Starbuck and Helo meet [[Samuel Anders]]'s [[Caprica Resistance|resistance movement]].
*'''Day 53 - Afternoon:''' Tigh deploys troops to vessels refusing to supply ''Galactica''. The [[Gideon]] Massacre takes place. Roslin is chagrined. Apollo initiates his escape plan.
*'''Day 53 - Evening:''' Saul and Ellen Tigh argue and have sex. Baltar poisons Tyrol and interrogates Boomer. Starbuck and Helo arrive at the Resistance HQ with Anders.
*'''Day 54 - Morning:''' Apollo delivers briefing, orchestrates Roslin's escape. The deck gang begin construction of a new brig cell for [[Cylon agent|Cylon agents]].
*'''Day 54 - Afternoon:''' Apollo & co. disembark at the [[Cloud Nine]] and link up with [[Tom Zarek]]. Starbuck and Anders flirt.
*'''Day 54 - Evening:''' Commander Adama wakes up. Cally kills ''Galactica''-Boomer.
*'''[[The Farm]]'''
*'''Day 61:''' Laura Roslin & co. take refuge on ''[[Kimba Huta]]''. William Adama resumes command of ''Galactica''.  Kara Thrace is captured by the Cylons and taken to a Cylon [[Farm]].  She is later rescued by [[Samuel Anders]]'s [[resistance]] and [[Sharon Agathon|Caprica Valerii]].  Thrace, Valerii and Karl Agathon depart Caprica in a Heavy Raider captured by Valerii earlier in the rescue attempt but promise to return to rescue Anders and his men.  [[Simon|The doctor]] who tended to Thrace at the Farm, is revealed to be a Cylon agent ([[The Farm]]).
 
===[[Home, Part I]]===
*'''Day ?? - Morning:''' Kara Thrace's captured [[Cylon Heavy Raider|Heavy Raider]] jumps into orbit around Kobol.  Tom Zarek attempts to have it shot down because it's not the same Raider that Thrace departed in.  Thrace lands her Heavy Raider aboard the ''[[Astral Queen]]'' and is reunited with President Roslin and Lee Adama.  Lee learns that in addtion to Karl Agathon, Thrace brought back the Caprican copy of Sharon Valerii, whereupon Lee pulls a gun on Sharon.  After defusing the situation with words, Roslin orders Valerii thrown out the airlock, but relents and has her thrown into the brig instead, after hearing both Thrace and Agathon's protest.  Commander Adama promotes Captain [[George Birch]] to be the new ''Galactica'' CAG.
 
*'''Day ?? - Afternoon:''' Commander Adama holds a press conference regarding the escape of President Roslin from his custody and the ensuing martial law.  Adama adjourns the press conference when the questions become increasingly pointed. 
 
*'''Day ??+1 - Morning:''' Cpt. Birch on his first mission as CAG is responsible for an accident that nearly kills [[Kat]].  Zarek and his trusted lieutenant [[Meier]] plot to overthrow Roslin and take command of the fleet.
 
*'''Day ??+1 - Afternoon:''' Cpt. Birch oversees his second flight mishap as CAG when two ships he's supposed to be guiding collide with one another during a routine refueling operation.
 
*'''Day ??+2 - Morning:''' Roslin's party, made up of Thrace, Cpt. Adama, Elosha, Zarek, Meier, Agathon, Boomer, two Zarek red-shirts, two Roslin red-shirts and Roslin herself land on Kobol.  Using Valerii as their guide they set out in search of the [[Tomb of Athena]].
 
*'''Day ??+2 - Afternoon:'''  The party is ambushed by Cylon Centurions after Elosha accidentally trips a "bouncing betty" land mine and it blows up in her face, killing her.  The surviving party is saved when Valerii uses an RPG launcher to destroy the last remaining Centurion.
 
*'''Day ??+2 - Evening:''' Adama makes the decision to put the fleet back together after a long and heartfelt talk with [[Dee]].
 
===[[Home, Part II]]===
*'''Day ??:''' - [[Raptor 1]] lands on Kobol with [[William Adama]] and his contingent.  [[Tomb of Athena]] found.
*'''Day ??:''' - Roslin reestablished as lawful President; martial law ends. Fleet reunification.
 
===[[Final Cut]]===
*'''Day ??''' [[D'anna Biers]] produces a documentary aboard the Galactica about the "[[Gideon massacre]]."  It is a generally positive documentary broadcast to the fleet.  Unknown to the fleet, it is also disseminated to the Cylons, updating them with the status of the Colonial fleet.
 
===[[Flight of the Phoenix]]===
*'''Day 84''' - [[Cally]] is released from the brig; a welcome back party is thrown for her by the deck crew.
*'''Day ??''' - Laura Roslin is given a few weeks, a month at the most to live.
*'''Day ??''' - [[Chief Tyrol]] begins construction of the [[Blackbird]] prototype stealth fighter.
*'''Day ??''' - [[Great Cylon Turkey Shoot|''Galactica'' routs hundreds of Cylon fighters]] without a casualty while dispatching a [[Logic bomb]] from their ship computers. 
*'''Day ??''' - The [[Blackbird]] prototype stealth fighter is completed by [[Chief Tyrol]] and a team of Galactica crewmembers.  Lt. Thrace flies it on its first test flight, quickly proving its value as a stealth craft.
 
===[[Pegasus (episode)|Pegasus]]===
*'''Day ??''' - ''Galactica'' encounters battlestar ''[[Pegasus (RDM)|Pegasus]]''. Admiral [[Helena Cain]] assumes fleet command.
*'''Day ??'''- [[Galen Tyrol|Tyrol]] accidentally kills ''Pegasus'' Lieutenant [[Alistair Thorne|Thorne]] and is arrested with [[Karl Agathon|Helo]].
*'''Day ??''' - A standoff between the two battlestars begins over the treatment of the arrested ''Galactica'' crew.
 
==Season two timeline discontinuity==
:''Main article: [[Season two timeline discontinuity]]''
Based on various evidence, the end of "Resistance" can be very firmly dated to Day 54. This puts Cally's release at Day 84, and in turn means that as of "Flight of the Phoenix", Roslin was not expected to live past day 114. Corroborating this, Sharon Valerii does not appear visibly pregnant in "Pegasus".
 
However, in the following episode, Admiral Cain states offhandedly that it has been about six months since the fall of the colonies. This is further corroborated in "Epiphanies", which we learn takes place 189 days after the holocaust (a full 75 days longer than Roslin's most favorable prognosis). Additionally, Valerii now appears to be well into her second trimester, and elections have been put off by 75 days from their first-season projections.
 
There is apparently no way to reconcile this discrepancy. Even under the most liberal assumptions, the first half of the second season timeline cannot accommodate more than about three additional days.
 
Consequently, there is a 75-day discontinuity between the fist and second halves of season two. The second half of the season is dated from the firm dates given in "Resurrection Ship, Part I" and "Epiphanies", but be aware that dates throughout the remainder of season 2 are likely to contradict those from earlier in the series.
 
==Season 2.5==
 
===Dates not specific to episodes===
 
*'''c. Day ~140''': [[Cylon Raider (RDM)|Cylon Raider]]s attack the freighter ''[[Greenleaf]]''.  [[Ray Abinell]] is killed in the attack ([[Sacrifice]]).
 
===[[Resurrection Ship, Part I]]===
*'''Day ~175''' - The standoff between the two battlestars ends in an uneasy truce, and a tense summit aboard Colonial One, after Lt. Thrace returns from an unauthorized surveillance mission to the Cylon fleet, where she gains critical evidence on a Cylon ship.  Dr. Baltar is able to determine from [[Gina]] that this is the [[Resurrection Ship]] that cylons need to resurrect so far from the Cylon homeworld.
 
===[[Resurrection Ship, Part II]]===
*'''Day ~177''' - The Battlestars Galactica and Pegasus together engage the Cylon fleet in the [[Battle of the Resurrection Ship]], where they achieve an overwhelming victory with relatively light casualties, destroying not only the Resurrection Ship, but at least one other Cylon base star.  The Blackbird is destroyed in the battle, although Lee Adama manages to eject successfully.  At least one Raptor is also lost in the battle.  Admiral Cain is killed by Gina, after Baltar helps her escape captivity.  He then proceeds to hide her in the fleet.
 
===[[Epiphanies]]===
*'''Day 189''' - President Roslin near death; orders death of Cylon fetus.  A [[Demand Peace|Cylon peace movement]] begins to pose as a threat to [[The Fleet (RDM)|the Fleet]].  The Cylon fetus is eventually spared, when Dr. Baltar determines how to use Cylon fetal stem cells to treat Roslin's cancer.  Dr. Baltar smuggles the nuclear weapon that he was provided with for work on his Cylon detector to the Cylon peace movement aboard Cloud Nine.
 
===[[Black Market]]===
*'''Day ???''' - Commander Fisk is murdered aboard the Battlestar Pegasus.  Lee Adama begins an investigation into the matter.
*'''Day ???''' - Lee Adama kills [[Phelan]], leader of the [[Black market (organization)|Black Market]] crime syndicate.
*'''Day ???''' - Lee Adama is debriefed on the entire incident regarding the murder of Fisk and the Black Market.
 
===[[Scar]]===
*'''Day ???''' - After 29 days in an asteroid field (putting us at Day 218 or later), the ''[[Majahual|Majahual's]]'' mining operation has produced enough raw materials for the construction of two new Viper squadrons using the fabrication facilities aboard the [[Pegasus (RDM)|Battlestar ''Pegasus'']].  Attacks on the operation continue by the ace Cylon raider known as [[Scar (Raider)|Scar]], making it the source of a heated competition between Lt. Katraine and Cpt. Thrace.
 
===[[Sacrifice]]===
*'''c. Day 210''' - [[Sesha Abinell]], her brother-in-law [[Vinson Abinell|Vinson]] and [[Page|two]] [[Chu|accomplicies]] lay siege to bar onboard [[Cloud 9]], taking the guests hostage, and sealing the area off from the rest of the ship.  Abinell's husband was killed aboard the ''[[Greenleaf]]'' when the [[Cylons (RDM)|Cylons]] attacked it ten weeks ago, and she decides to exact vengeance. Lee Adama is wounded as a result of a failed rescue attempt by [[Kara Thrace]].  Sesha, Vinson, Chu, Page, two marines and [[Billy Keikeya]] are killed.
 
''Backdated from "The Captain's Hand" and "Lay Down Your Burdens, Part I"''
 
===[[The Captain's Hand]]===
*'''c. Day 236''' - [[Kara Thrace]] assigned to ''Pegasus'' as flight instructor.
*'''Day ??''' - Almost one month after the events of "Sacrifice", [[Lee Adama]] has been promoted to Major and temporarily assigned to ''[[Pegasus (RDM)|Pegasus]]''. [[Rya Kibby]] arrives on ''Galactica'' seeking a clandestine abortion from Dr. [[Cottle]] and requests asylum.
*'''c. Day 240''' - ''Pegasus'' Commander [[Barry Garner]] dies during the [[Battle of the Binary Star System]]. Adama is promoted to Commander and given command of ''Pegasus'', with Thrace replacing him as CAG of ''Galactica''. In response to heavy lobbying from Gemenon delegate [[Sarah Porter]] over the Kibby incident, Roslin places a moratorium on abortion. In protest, Vice President Gaius Baltar announces his candidacy for president in the upcoming election.
''Backdated from "Lay Down Your Burdens, Part I".''
 
===[[Downloaded]]===
*'''Day 270 (Zero Hour + 9 months)''' - [[Hera]] born, approximately one month premature. She survives, but the military and civilian leadership arrange for its death to be faked in order to throw off Cylon infiltrators such as [[Gina]] and [[D'anna Biers]]. [[Galen Tyrol]] accompanies [[Karl Agathon]] as he scatters what he believes to be his daughter's ashes from a Raptor. Hera is adopted by [[Maya]], who will later rename the child "Isis".
*[[Caprica-Six]] and [[Sharon Valerii (Galactica copy)|Boomer]], both reincarnated on [[The Twelve Colonies (RDM)#Caprica|Caprica]] shortly after their respective deaths, are introduced by a copy of [[Number Three]]. The three, along with [[Samuel Anders]], are caught in an explosion set by members of the [[Caprica Resistance]]. Caprica-Six kills Three and releases Anders; Caprica-Six and Boomer resolve to persuade the Cylons to adopt a new approach in dealing with the Colonials.
''The originally aired version of this episode contained an error which placed the previous episode "[[Resistance (episode)|Resistance]]" "10 weeks before" this one. This was corrected for the DVD release and subsequent airings.''
===[[Lay Down Your Burdens, Part I]]===
*'''c. Day 256''' - [[Galen Tyrol]] begins a series of recurring suicidal nightmares.
*'''c. Day 269''' - Presidential debates begin. [[Kara Thrace]], [[Felix Gaeta]] and [[Lee Adama]] brief pilots on Caprica SAR mission on ''Pegasus''. Tyrol attacks [[Cally]] after being woken from a nightmare.
*'''c. Day 270''' - Media reports on first debates. SAR team departs; [[Margaret Edmondson|Margaret "Racetrack" Edmondson]] and crew accidentally discover a habitable planet and return to [[the Fleet]]. Tyrol begins counseling with Brother [[Cavil]].
*'''c. Day 280''' - Final presidential debate. SAR team arrives at Caprica and meets with [[Samuel Anders]]'s [[Caprica Resistance|Resistance]].
*'''c. Day 283''' - Polls open (projected).
''Tom Zarek states that the fleet has been "cooped up in metal boxes for nine months" the morning after the debates. This date is roughly taken as Day 270, with an implied give-or-take of a couple weeks. The surrounding events noted above can, however, be placed relative to this point with a good degree of certainty based on episode dialogue.''
 
===[[Lay Down Your Burdens, Part II]]===
*'''Day 281''' - Thrace's SAR team and Anders' resistance are pinned down by a Cylon sneak attack.  They are under siege for 18 hours, the next morning they awake to find the Cylons have completely abandoned Caprica.
*'''Day 282''' - The SAR mission returns to Galactica, Cavil is discovered to be a Cylon when a second copy steps off a Raptor.
*'''Day 283''' - The polls open, Baltar wins.  Tory Foster conspires with Col. Tigh and Dualla to rig the vote results to keep Roslin in power.  Their plan is found out by Lt. Gaeta and Admiral Adama convinces Roslin to let the people's will prevail and let Baltar become president.
*'''Day 284''' - Baltar is inaugurated President.  A distraught and emotionally bankrupt [[Gina]] detonates the nuclear warhead given to her by Baltar and destroys ''Cloud 9'' and several other near-by ships.
*'''c. Day 285''' - Adama visits President Baltar aboard ''Colonial One'' and questions him about the ''Cloud 9'' disaster.  A defiant Baltar rebukes all his questions and accusations.
*'''Between c. Day 285 and c. Day 315'''
**''Galactica''’s and ''Pegasus''’s crews begin to resign and settle on New Caprica.
**Anastasia Dualla is promoted to Lieutenant (j.g.) and requests to transfer to ''Pegasus'' as Lee Adama's XO.
**Galen Tyrol and Cally Henderson marry, and Cally becomes pregnant.
**Felix Gaeta retires from military duty and becomes President Baltar's aide.
**The fleet begins the process of settling on New Caprica.
*'''c. Day 420''' Four months or 120 days after settlement begins - The flashback sequences from [[Unfinished Business]] concerning the ground breaking of the settlement of [[New Caprica]] are set at this time.  They are noted on screen as having occurred 17 months prior to the events of that episode, or 8 months prior to New Caprica's occupation by the Cylons.
**Dualla's transfer to ''Pegasus'' is approved.
**Galen and Cally Tyrol retire from ''Galactica'' and settle on New Caprica.
**Gaius Baltar and his administration celebrate the groundbreaking of the settlement on New Caprica.  An all-night dance and celebration is held.
*'''c. Day 421''' - Kara Thrace and Lee Adama have sex for the first time and declare they love each other.  When Adama awakens the next morning he discover Kara has run off and married Samuel Anders. Because of this Kara and Lee stop speaking to one another.  Lee proposes to Dualla.  ([[Unfinished Business]])
*'''Between c. Day 421 and c. Day 660'''
** Lee Adama and Anastasia Dualla marry and remain on''Pegasus''.
**Caprica-Sharon and Karl Agathon marry and remain on ''Galactica''.
** Lee takes to over-eating to deal with his emotional trouble over Kara's betrayal.  He gains significant weight between now and when the Cylons arrive.
**Kara Thrace and Saul Tigh appear to have mend fences.
**After settling on New Caprica, Tyrol becomes a union head.
**James "Jammer" Lyman and Tucker "Duck" Clellan retire and settle on New Caprica.
**Former President Laura Roslin becomes a school teacher on New Caprica. Maya, Hera's adoptive mother, is her teacher's assistant.
**Samuel Anders contracts pneumonia.
*'''c. Day 660 (360th day since settlement; assuming settlement day was day 300)'''
**Admiral Adama discharges Saul Tigh from his duties aboard ''Galactica''. He and Ellen settle on New Caprica.
**Galen and Cally Tyrol organize a general labor strike in protest of Baltar's poor leadership as President.
**Kara attempts to persuade Lee Adama to relinquish medical supplies for her husband.
**Cylon forces occupy New Caprica.
 
 
==''[[Battlestar Galactica: The Resistance]]''==
*'''Between Day 660 and c. 727'''
**[[Nicholas Tyrol]] is born to [[Cally]] and [[Galen Tyrol]].
**[[Kara Thrace]] is forced into a marriage-type arrangement with [[Leoben Conoy]], whom she kills regularly.
:''Note: It is unclear when Kara was taken, but finding her was clearly Conoy's first order of business.''
**A resistance movement is established. Its leaders are [[Saul Tigh]], [[Galen Tyrol]] and [[Samuel Anders]]. Other members include [[Jean Barolay]] and [[James Lyman|James "Jammer" Lyman]].
:''Note: Samuel Anders is clearly a resistance leader by the episode "Occupation", but he is not seen during "Battlestar Galactica: The Resistance". His character background suggests that he would have been a founder or early member of the resistance, but we must also presume it took him at least some time to recover from his illness.''
 
*'''c. Day 727 (427th day since settlement, 67th day of occupation) - Evening:''' Tyrol and Tigh have been organizing a budding resistance movement, but they find recruiting new soldiers is becoming dangerous and difficult. New Capricans are shot on the spot if weapons are found in their tents. The Cylons are also setting up a human police force to take over for the [[Cylon Centurion]]s, who are doing most of the police work.
 
*'''Day 728?:''' - Due to personal reasons Duck has refused to work with the resistance, much to the ire of Tyrol. A ritual for protection of the crops from blight is said in the temple. As the priestess leaves, Jean Barolay abruptly shifts the conversation to the movement of the weapons stash into the temple; Jammer strongly objects, but he is overruled by Tigh. Later in the day, Duck tells Nora his decision about joining the resistance. She is pleased that he refused Tyrol. During the night, Tigh, Tyrol, Jammer, and Barolay move the weapons into the temple disguising them.
 
*'''Day 729?:''' - Nora wakes Duck saying he will be late to work. She tries to convince him to go to temple after work with her. He refuses, saying he talks to the gods in his own way. Later in the day, Cally and Nora are visiting the temple. A Number Five announces that he will enter the temple with several Cylon Centurions. Several men try to block them, but the Cylons force their way in and gunfire can be seen and heard. While trying to run away Cally falls to the ground protecting her baby, but Nora is shot and killed when she tries to retrieve her bag. Afterwards Tyrol, Cally and Jammer return Nora's bag to Duck, and inform him about the death of Nora. Duck is physically sickened by the news. He becomes angry and demands to know if there were weapons in the temple. Tyrol tries to avoid the question, but Duck doesn't relent until Tyrol admits the truth. At that point, Duck orders them out of his tent.
 
*'''Day 730?:''' - Tigh, Barolay, and Jammer discuss the effects of the attack, which has brought about positive effects for the resistance. The general population has started to side with the resistance and 1,000 people protested outside Colonial One over the attack on the temple. Since the attack, recruitment has become easier with 150 Colonials signing up. Tigh thinks that this was a good deal because the loss of a few weapons was worth the propaganda victory. However, Jammer is upset that the loss of 10 lives was not worth it. Tigh comes down hard on Jammer, stating that people die in war, nice people, and the resistance has no room for crybabies.
 
*'''Day 73X?:''' - Tyrol and Tigh discuss the arrest of Jammer by the Cylons. Tyrol insists that Jammer won't reveal the work of the resistance. Jammer is imprisoned in a Cylon detention center and is visited by a Number Five. Number Five proposes to Jammer that the massacre at the temple may have been planned by the Resistance. Number Five offers Jammer the chance to stop further bloodshed by informing him of potentially life-threatening actions by the Resistance. Jammer balks at becoming a traitor to the Resistance, but accepts a key card which will let him enter the [[New Caprica Detention Center|detention center]] to report any secret plans of the Resistance.
 
 
==Season 3.0==
===[[Occupation]]===
*'''Between Day 73X and 794'''
**[[Saul Tigh]] is captured by the Cylons and detained. One of his eyes is literally ripped out by the Cylons.
**Jammer and Duck enlist with the [[New Caprica Police]].
 
*'''c. Day 794 (494th day since settlement, 134th day of occupation)''': Kara Thrace kills the fifth incarnation of the [[Leoben Conoy|Leoben]] who abducted her and Colonel Tigh is released from the detention centre.
*'''c. Day 795 - morning''': [[Duck]] commits to the suicide mission, Gaeta secretly provides the jamming frequencies, communication is established with [[Margaret Edmondson|Racetrack]]'s Raptor, and Duck executes the suicide bombing.
 
===[[Precipice]]===
*'''c. Day 795 - evening''': Arguably, the introductory scene with Roslin in a cell takes place during the evening on the same day that the bombing occurred. An announcment that a curfew is in effect suggests that the time is between 1900 and 2200, since that is customarily when militaries impose cufews.  The [[New Caprica Police|NCP]] raid the tents of and capture numerous suspected [[New Caprica Resistance|resistance]] members.
*'''c. Day 796 - morning & midday''': Chief Tyrol talks to Gaeta about Cally, Leoben introduces Kasey, the suicide woman damages the power substation, the Cylon conference forces Baltar to sign the execution order, Ellen Tigh steals the map, Roslin and others are detained, the trucks are driven to the [[Pergamus Flats]], and Sharon Agathon's contingent lands.
 
===[[Exodus, Part I]]===
*'''c. Day 796 - midday & evening''': Tyrol's group ambush the firing squad, the marines save Agathon and the resistance group, a [[Number Three]] dreams of [[Hera]], and Caprica Six talks to Baltar about her feelings.
*'''c. Day 797''': Starbuck apologizes to Kasey and the Number Three visits the [[Dodona Selloi|Oracle]].  The resistance's final planning and coordination is not shown but must take the entire day--similarly, what are the Cylons doing?  Certainly they must be doing ''something'' the day after their execution fails and all the resistance members are free?--the next scene on New Caprica after the Oracle's scene is the Number Three talking to [[Dr. Cottle]] in the evening.
*'''c. Day 797 - morning & midday''': The Cavil killed by Tyrol's ambush returns to ''[[Colonial One]],'' introducing the question of whether it takes two days to [[Resurrection (RDM)|download]].  Anders talks with Roslin about Hera's protection, Agathon infiltrates into the facility and obtains the launch keys.  Ellen Tigh is exposed.  Admiral Adama gives "the speech."
 
===[[Exodus, Part II]]===
*'''c. Day 798 - afternoon''': Ellen Tigh voices her final oratory, and the resistance's bombs initiate the [[Battle of New Caprica]], soon joined by the battlestars.  ''Galactica'' afterward conducts a link-up with other ships, involving many emotional reunions, and Admiral Adama finally shaves.
 
===[[Collaborators]]===
*'''c. Day 800 (Day 3 of the Second Exodus)''' - James "Jammer" Lyman, and 12 others before him are executed by [[The Circle]] for being Cylon collaborators. 
**Gaius Baltar awakens aboard a Cylon basestar for the first time after fleeing New Caprica. 
**President Tom Zarek meets with Laura Roslin aboard ''Colonial One'', Zarek promises to name Roslin as his Vice President then resign. 
**Samuel Anders resigns from The Circle citing personal issues, his wife Kara Thrace replaces him. 
**Felix Gaeta is tried and convicted by The Circle, he is abducted and taken to ''Galactica''’s flight pod for execution but is spared by Col. Tigh and Chief Tyrol. 
**President Roslin abolishes The Circle and immediately pardons all those suspected of collaboration.
 
*Between [[Collaborators]] and [[Torn]] -   
** Lee is demoted back to Major, and is once again the Galactica CAG.   
** Kat is demoted from CAG to leader of Blue Squadron.
** Helo keeps the XO slot aboard Galactica.
** Gaeta appears to become the scientific advisor.
** Cally Tyrol is back on the flight deck alongside her husband.
 
===[[Torn]]===
*'''c. Day 850'''
** ''Galactica''’s air group runs exercises with the Viper pilots.
** Lee Adama has lost all of the weight he put on in the year between the colonization of [[New Caprica]] and the Second Exodus.
** Felix Gaeta meets with President Roslin and Admiral Adama to discuss Baltar's research on the road to [[Earth]].  Gaeta's research shows they are coming close to a way point described in the Book of Pythia, the [[Lion's Head Nebula]].
** Baltar, aboard the Cylon basestar, has hallucinations.  Caprica-Six and Three begin inquiring about the location of Earth and debating Baltar's usefulness.
** Hot Dog christens Lieutenant Sharon Agathon with the callsign "Athena".
** They Cylons discover the basestar they sent to investigate the Lion's Head Nebula has been infected by a virus from an [[Lion's Head beacon|ancient probe]] they brought on board.  Baltar, looking to prove his worth to the Cylons, offers to board an infected basestar and collect scientific information.
** Kara Thrace and Saul Tigh sow dissent between the survivors of New Caprica and the crew that stayed behind on ''Galactica''.  When word reaches Admiral Adama about their conduct he confronts them and puts a stop to it.
** Athena and Racetrack jump into range of the Lion's Head Nebula, and quickly realize they have jumped right next to the dying basestar.
** Baltar returns to the basestar and discusses what he saw with Caprica-Six and Three.  He leaves out the part about the 13th Colony probe, but his omission is uncovered when Caprica sorts through the images he brought back and spots the probe.
 
===[[A Measure of Salvation]]===
*'''c. Day 851'''
** A boarding party comprising of Raptors and Vipers investigate the derelict basestar, and find that all but a few Cylons aboard have died.
** The boarding party and some Cylon prisoners are en route back to Galactica when the basestar self-destructs.
** Galactica quarantines the boarding party and prisoners while Dr. Cottle finds out if the virus affects humans. His investigation identifies a virus that can be treated, but not cured for Cylons.    Lee Adama suggests a plan to eliminate the entire Cylon race by executing their prisoners in range of a Resurrection Ship.
*'''c. Day 852'''
**Galactica jumps to a Cylon supply line, and launches Vipers and Raptors to attract the Cylon fleet. In the midst of this, Helo initiates thwarts the mission, unplugging an environmental control box.
** Aboard the basestar, Baltar is interrogated by Three and Caprica-Six.
**This storyline picks up immediately after prior episode.
 
===[[Hero]]===
*'''c. Day 935'''
**President Roslin and Tory Foster draw up plans to honor Admiral Adama for his 45 years of service to the Colonial Fleet.
**Number Three begins experiencing strange visions.  When she awakens she is in bed with both Caprica-Six and Gaius Baltar.
**''Galactica'' detects three Raiders inbound, one of them is damaged and the other two are giving chase and firing upon it. The two chasing it are quickly destroyed, and Adama orders Kat and Starbuck to escort the third to ''Galactica'' after hearing a familiar human voice and callsign: Bulldog.  In the hangar bay, Adama and a security detail meet the man who stumbles out of the Raider: [[Daniel Novacek]].
**Novacek is examined by [[Doctor Cottle|Dr. Cottle]] and cleared of being a Cylon.  President Roslin meets with Admiral Adama and Lt. Novacek and learns that Novacek was one of Adama's pilots who was captured by the Cylons after being shot down on a mission into Cylon territory that went bad.
** Adama confesses to Roslin that he was responsible for shooting Novacek down and was possibly responsible for attack on the Colonies because of the mission.
*'''c. Day 936'''
** Novacek runs into Saul Tigh who lets it slip that Adama was responsible for shooting down Novacek.  Enraged, Novacek confronts Adama and tries to kill him but Tigh steps in saves Adama's life.
*'''c. Day 937'''
**Number Three programs a Centurion to execute her in order to experience another vision.  Before downloading she experiences a vision of the Opera House on Kobol and sees five figures in white robes on the stage.
**Adama submits his resignation to Roslin, she refuses to accept it and insists he attend the ceremony to honor him with a medal.
*'''c. Day 938'''
** After sending Novacek off to a berthing on another ship with a uniform, Tigh and Adama sit down for a drink in the admiral's quarters and discuss what happened to [[Ellen Tigh|Ellen]] on [[New Caprica]].
 
===[[Unfinished Business]]===
*'''c. Day 950''' - The ''Galactica'' crew work out their aggressions in the boxing tournament on the hanger deck nicknamed the "dace".  Admiral Adama resolves to begin treating his crew less like family and more like soldiers after he fights and loses to Chief Tyrol.  Kara Thrace and Lee Adama finally work out the problems in their relationship by fighting each other in the ring.  They finish the match in an embrace and their spouses, Samuel Anders and Anastasia Dualla, leave the deck in disgust.
 
===[[The Passage]]===
(There are no clear markers for the amount of time between the previous episode and this one.  Given that Doc Cottle estimates that the Fleet has enough food for seven to ten days, and that they have already tried generating emergency rations, which also were contaminated, it has probably been at least a week since the events of "Unfinished Business."  The dates here use two weeks, on very little basis.)
*'''c. Day 964''' - Sharon Agathon conducts her recon mission, the Fleet flies through the star cluster, and Kat dies of radiation sickness.
 
===[[The Eye of Jupiter]]===
*'''c. Day 978''' (Resupply mission day 14) - Cylons arrive on the same day that Tyrol finds the Temple of Five.
 
==Future Events==
 
No current future events at this time.
 
== Past Predictions ==
 
The following is a list of predictions that were made based off information from past episodes during the first run of the series. These predictions have since become obsolete or the events have been addressed in light of events from episodes aired after said predictions were made. They are kept here as a reference.
 
*'''Day 50 + 6 Months (c. Day 230):''' Roslin's maximum life expectancy as of Day 50 ([[Kobol's Last Gleaming, Part I]]).
*'''Day 86 + 1 month (c. Day 116):''' Roslin's maximum life expectancy as of Day 86 ([[Flight of the Phoenix]])
**Roslin's cancer is cured by fetal blood from [[Sharon Agathon|Sharon]]'s then-unborn child, [[Hera]] ([[Epiphanies]]).
*'''Day 54 + 3 months (c. Day 144):''' [[Samuel Anders]]'s [[Caprica Resistance]]'s anti-radiation med supply projected to run out ([[Resistance (episode)|Resistance]]).
**Anders' group survives in "[[Downloaded]]", c. Day 270.  They could have simply found more stockpiles of anti-radiation meds in the intervening time period.
*'''Day 12 + 7 Months (c. Day 222):''' Elections due for President of the [[The Twelve Colonies (RDM)|Twelve Colonies]] ([[Bastille Day]]).
**The elections eventually come, about [[season two timeline discontinuity|two months late]], in "[[Lay Down Your Burdens, Part II]]".
*'''Day 24 + 9 Months (c. Day 294):''' [[Sharon Agathon|"Caprica" Sharon Valerii]]'s daughter born. (see [[#Notes|Notes]] below)
**[[Hera]], daughter of [[Helo]] and [[Sharon Agathon|"Caprica" Sharon Valerii]] is born premature c. Day 270 ([[Downloaded]]).
*'''Day 36 + 3 years (c. Day 1131):''' Fleet runs out of [[tylium]] fuel that was resupplied from the Cylon asteroid mine; assuming that no other sources have been found before this date. ([[The Hand of God (RDM)|The Hand of God]])
**We may presume that the Fleet's use of Tylium was essentially halted during the 17+ month stay on New Caprica.
*'''Day 260 (approx) + 18 years (c. Day 6,830)''' Time at which, if the [[Survivor count]] keeps up its current rate of decline and never increases, the human race will simply go extinct, according to Baltar's estimate in "[[The Captain's Hand]]".
**Due to the destruction of ''[[Cloud 9]]'' and surrounding ships in "[[Lay Down Your Burdens, Part II]]", and subsequent casualties during the [[Battle of New Caprica]] ([[Exodus, Part II]]), this figure must be drastically revised.
 
==Analysis of Colonial Dates==
 
In "[[Hero]]", [[William Adama]]'s [[:md:Image:Dossier.png|dossier]] can be clearly seen. While this document is fairly accurate in terms of Adama's personal history, the dating scheme used in the document seems to be flawed, particularly in lieu of previously established methods of timekeeping demonstrated in the series.


Here are a list of dates from Adama's past that the dossier contains:
''The most recent history could also be dated using the [[Colonial calendar#The Calendar from Caprica|calendar from ''Caprica'']], but the method was not used in the re-imagined series and remained in the background even on the new show. Furthermore, it is not known whether the calendar is specific to the planet Caprica or common to the twelve worlds.


:H5/21290      Birth of William Adama
*'''At least 200 years BCH:''' Humans develop an immunity to the virus causing [[Lymphocytic encephalitis]] {{TRS|A Measure of Salvation}}. <ref>Doctor Cottle notes the time as "a couple hundred years ago," which is an indeterminate amount of time, but likely less than four or five hundred years.</ref>
:D6/21311 First commission, Battlestar Galactica, fighter squadron
*'''ca. 93 BCH:''' [[Tauron Civil War]] causes emigration of [[Joseph Adama|Joseph]] and [[Sam Adama]] to {{RDM|Caprica}} to live in an orphanage. Joseph later becomes a lawyer thanks to the education funded by the [[Ha'la'tha]] crime syndicate; Sam becomes an assassin for Ha'la'tha {{CAP|Pilot (Caprica)}}.
:E4/21312 Commendation for shooting down Cylon fighter in first combat mission.
*'''69 years BCH:'''
:D5/21314 Mustered out of service post-armistice
**[[Saul Tigh]] supposedly born (defined by deleted scene in "[[Valley of Darkness]]" concerning the ''[[Brenik]]''). This is actually a fabrication by [[John Cavil]].
:R6/21317 Served as Deck Hand in merchant fleet and as common […] aboard inter-colony tramp freighters
:D1/21331 Recomissioned to Fleet
:D6/21337 Major: Battlestar [[Atlantia (RDM)|Atlantia]]
:R8/21341 Executive Officer: Battlestar [[Columbia (RDM)|Columbia]]
:C2/21345 Commander: Battlestar [[Valkyrie]]
:C2/21348 Commander: Battlestar Galactica


This provides some interesting information. The fields in the format X#/##### appear to be dates, with the five-digit string following the solidus apparently corresponding to the year.
===First Cylon War===
:''See [[Timeline - Caprica (RDM)]]''


The following can be deduced from this document:
*'''58—52 years BCH:''' With the use of a meta-cognitive processor stolen from Tauron rival [[Tomas Vergis]], the Caprican tech CEO [[Daniel Graystone]] creates the first [[Cylons (RDM)|Cylons]] of the Twelve Colonies to aid in hard labor and warfare. A virtual copy of his dead monotheist daughter [[Zoe Graystone]]'s consciousness is downloaded into one {{CAP|Pilot (Caprica)}}. Humanity is unaware that they are repeating the actions of their ancestors on Kobol.
*'''ca. 58 BCH:'''
**[[William Adama]] born in [[Qualai]], {{RDM|Caprica}} {{TRS|Hero}}. He is named for his deceased older brother {{CAP|Apotheosis}}.
*{{inlineref|52 BCH|52 years BCH}}:'''
**Cylon revolt starts the first [[Cylon War]] {{TRS|Colonial Day}}.
**[[Articles of Colonization]] signed {{TRS|Colonial Day}}.<ref>From Ronald D. Moore's [http://blog.scifi.com/battlestar/archives/2005/04/index.html#a000025 scifi.com blog post] of April 11, 2005: "Colonial Day occurs every year and it is the anniversary of the founding of the "federal" system of government which was a relatively recent event. Before that time, the Colonies functioned more or less on their own, possibly with various attempts at alliances or even complete Colonial government over the centuries since the exodus from Kobol, none of which were successful. When the first Cylons were created, individual Colonies still warred against one another and it wasn't until the Cylon rebellion that the 12 Colonies finally came together in a permanent way. Presumably, the Articles of Colonization were not made up out of whole cloth, however, and there may well be principles and ideas of justice that date back to the original colonists."</ref>
*'''51 years BCH:''' Colonial ship ''[[Brenik]]'' is lost after a boarding action by [[Cylon Centurion Model 0005|Cylon Centurions]] ([[Valley of Darkness]], deleted scene).
*'''ca. 50 years BCH:''' Battlestar ''[[Galactica (TRS)|Galactica]]'' enters service.
*'''42 years BCH:'''
** William Adama begins his service in the Colonial Fleet as a [[Raptor]] pilot aboard ''[[Galactica (TRS)|Galactica]]'' with co-pilot and ECO [[Coker Fasjovik]], 10 years into the Cylon War ("Hero," ''[[Blood and Chrome]]''). He is later promoted to Lieutenant and is assigned his first Viper, a [[Mark III]], and a special task force comprised of top pilots for dangerous missions.
** Battlestar ''[[Archeron]]'' destroyed by Cylon forces in [[Sector 12]]. All hands lost {{TRS|Blood and Chrome}}.
** Battlestar ''[[Osiris]]'' destroyed over [[Djerba]] in suicide maneuver against lone Cylon Baseship. All hands lost. Fate of Lt. [[Jim Kirby]] (AWOL) unknown.
** [[Becca Kelly]] succeeds in her mission on Djerba, and is later killed by the Cylons. [[Ghost Fleet Offensive]] successful, decimating Cylon military holdings in five sectors.
** Mechanical Cylons begin experiments constructing humanoid forms of Cylon.
*'''42-41 years BCH''': [[Coker Fasjovik]] presumably musters out of Fleet after termination of second mandatory tour.
*'''40 years BCH:'''
**Experiments on "humanoid" Cylons culminate in the creation of the [[First Hybrid]] and subsequent [[Hybrid]]s, but no fully humanoid forms.
**The Final Five arrive in the Twelve Colonies in the waning days of the war.
**The Five meet the local Cylons and negotiate an end to the war.  They will give the Cylons biological bodies complete with resurrection technology if the Cylons agree to end the war.
**[[Operation Raptor Talon]] conducted by the Colonial Fleet, where William Adama flies his first official Viper mission. Battlestar ''[[Columbia (RDM)|Columbia]]'' destroyed {{TRS|Razor Flashbacks}}.
**Armistice ends the [[Cylon War]]. Cylons exile themselves from the Twelve Colonies {{TRS|Miniseries}}. The First Hybrid and his [[Cylon Centurion Model 0005#Guardians|Guardians]] part company with the other Cylons.
**William Adama musters out of the Colonial Fleet ("[[Scattered]]," [[Sources:Adama's Dossier|Adama's dossier]]).


* This episode marks the 45th anniversary of Adama's commissioning, which puts it in the year 21356, and makes Adama 66 years old.
===Inter-War Period===
* Adama spent three years in between being mustered out and finding a job on a tramp freighter. We may speculate that it was during this time that his relationship with first wife [[Caroline Adama|Caroline]] deteriorated.
*'''37 BCH:''' William Adama enlists as merchant marine and serves aboard inter-colony freighters ("Scattered," Adama's dossier).
* Adama spent a total of 14 years serving in the merchant fleet.
*'''37 to ca. 30 BCH:'''
* Adama met Tigh roughly 30 years ago ([[Torn]]). That would be 21326, which correctly puts it in the middle of Adama's merchant fleet service.
** The Cylons establish a secret base known as [[The Colony]], built around and connected with the original ship of the Final Five. This is the place where research and development equipment belonging to the Final Five is stored.
* Adama was a major by the time he arranged for Tigh to be reinstated in the fleet ([[Scattered]]), which means that at least six years passed in between Adama's recomissioning and Tigh's.
**The Final Five create [[John Cavil]], the first of the new humanoid Cylons that are their "children," and designate him model Number One. They raise him for some time.
* Ronald Moore stated in his [[Podcast:Scattered|podcast for "Scattered"]] that the flashback scenes in [[Scattered|that episode]] took place 20 years before that episode, or in 21334. In fact, they appear to span at least an eleven-year period between 21326 (Adama and Tigh's first meeting) to 21337 (Adama's promotion to Major).
**John matures and assists the Final Five in the creation of seven other humanoid Cylon models.  A resurrection system is built for the new models based on technology left over from the Thirteenth Tribe.
* The first [[Colonial Day (holiday)|Colonial Day]], marking the unification of the Colonies, was probably in 21302. The one celebrated in "[[Colonial Day]]" was the 52nd, and it is now two years later.
*'''ca. 30 BCH:'''
* ''Galactica'' herself is at least 45 years old. Other battlestar's minimum ages prior to the Fall: ''Atlantia'' at least 13, ''Columbia'' at least 11, and ''Valkyrie'' at least 8.
**Cavil murders model [[Number Seven]], Daniel, out of jealousy by poisoning the amniotic fluid in which the Seven copies were maturing. 
**The Final Five are murdered by Cavil and their consciousnesses are [[boxing|boxed]].
**Cavil erases all knowledge of the Final Five and the missing model Number Seven from his fellow humanoid Cylon models and specifically programs them not to think about either.
**[[Saul Tigh]] is resurrected and introduced to the colonies as a military officer with false history of fighting in the war.
** [[Ellen Tigh]] is resurrected and introduced into Colonial society sometime thereafter.
*'''ca. 28 BCH:'''
** [[Galen Tyrol]] supposedly born.<ref>At the time of the Cylon attack, Tyrol has "ten years experience" {{TRS|Miniseries}}, and has "served on battlestars since I was 18" {{TRS|Resistance (episode)}}. This puts his birth in approximately 28 BCH, allowing for a few years leeway with the first comment.</ref> This is actually a fabrication by [[John Cavil]].
** First meeting between William Adama and Saul Tigh ("Scattered," "[[Torn]]"). <ref>The podcast for "[[Scattered]]" places their meeting "twenty years ago". In "[[Torn]]," Adama states that he has known Tigh for 30 years. Furthermore, [[Sources:Adama's Dossier|Adama's dossier]] places his reinstatement into the Colonial Fleet at 23 BCH. ''Battlestar Wiki'' choses to use the more consistent dates.</ref>
*'''ca. 27 BCH:''' William and [[Carolanne Adama]] meet and marry. <ref name = "leezak">This date is assumed as follows: Zak died 2 BCH. Since he graduated from some kind of military academy, he would be at least 22 years old, following real world models. On a [[:Image:Youngadamafamily.jpg|photograph]] of William Adama with his sons, Lee seems to be about two years older than Zak. Adama and his wife probably met not long before Lee's birth.</ref>
*'''ca. 26 BCH:''' [[Lee Adama]] born. <ref name = "leezak"/>
*'''ca. 24 BCH:''' [[Zak Adama]] born. <ref name = "leezak"/>
*'''23 years BCH:''' William Adama reinstated in the Colonial Fleet at the rank of Captain and is assigned to the battlestar ''[[Universal]]'' <ref>[[:Image:William Adama's Reinstatement Letter.jpg|This information comes from a prop used in the episode "Scattered".]]</ref> ("Scattered" deleted scene, Adama's dossier).
*'''21 years BCH:''' Saul Tigh reinstated in the Colonial Fleet at the rank of Captain by now-Major Adama (Scattered). <ref>The time between Adama's and Tigh's reinstatement is not specified on screen. The February/March issue of ''Battlestar Galactica: The Official Magazine'' gives it as two years: "''Adama reenlisted with the service and Tigh spent two years drinking before Adama pulled strings to get him back into service.''"</ref> <ref>In actually, this is Saul Tigh's ''entrance'' into the Colonial Fleet, not his return, as he did not serve in the Cylon War and all documents of his service and retirement were forged by John Cavil.</ref>
*'''20 years BCH:'''
**Last significant [[FTL]] jump recorded in ''Galactica'''s logs (Miniseries).
**[[Tom Zarek]] imprisoned for blowing up a government building on [[Sagittaron]] {{TRS|Bastille Day}}.
*'''17 BCH:''' William Adama assigned to the battlestar ''[[Atlantia (RDM)|Atlantia]]'', where he makes his 1000th Viper landing (Adama's dossier, "[[Act of Contrition]]").
*'''13 years BCH:''' William Adama assigned as executive officer to the new battlestar ''[[Columbia (RDM)|Columbia]]'' (Adama's dossier).
*'''11 years BCH:''' [[Laura Roslin]] begins her career in politics {{TRS|Litmus}}.
*'''ca. 10 years BCH:''' Galen Tyrol enlists in the Colonial Fleet as a non-commissioned officer.<ref>At the time of the Cylon attack, Tyrol has "ten years experience" {{TRS|Miniseries}}. It is likely that Tyrol (and the two other remaining members of the Final Five, Samuel Anders and Tory Foster), was introduced into Colonial society at or around this point by [[John Cavil]] as part of his plan for revenge on his creators, human and Cylon alike {{TRS|No Exit}}.</ref>
*'''9 years BCH:''' William Adama promoted to commander and assigned as commander of the battlestar ''[[Valkyrie]]'' (Adama's dossier, "Hero").
*'''7 years BCH:''' Saul and [[Ellen Tigh]] meet and marry again, unaware that it is the second time ("[[Kobol's Last Gleaming, Part I]]," [[List of Deleted Scenes (RDM)#Kobol's Last Gleaming, Part I|deleted scene]]).
*{{inlineref|6 BCH|6 years BCH}}: William Adama leads an aborted covert intelligence mission aboard ''Valkyrie''. [[Daniel Novacek]] is shot down and captured by the Cylons. Adama and Tigh are subsequently assigned to ''Galactica'' (Adama's dossier, "Hero"). <ref name="hero">While dialogue from "[[Hero]]" places these events at 1 BCH, this contradicts previously established dates about the time Adama and others served on ''Galactica''. See [[Hero#Analysis]] for a detailed explanation why ''Battlestar Wiki'' chooses to treat this as a continuity error and change the date.</ref>
*'''5 years BCH:'''
**[[Laura Roslin]]'s last breast exam prior to her cancer diagnosis {{TRS|Act of Contrition}}.
**Galen Tyrol assigned to ''Galactica'' {{TRS|Litmus}}. <ref>Since Adama states that Tyrol has been under his commander for "over five years," this might also be one year earlier.</ref>
*'''4 years BCH:'''  
**[[Kara Thrace]] graduates from the Colonial Fleet Academy {{TRS|Maelstrom}}.
**[[Socrata Thrace]] dies of stomach cancer (Maelstrom).
*'''3 years BCH:''' [[Felix Gaeta]] assigned to ''Galactica'' (Miniseries).
*{{inlineref|2 BCH|2 years BCH}}:
**[[Caprica-Six]] begins residence on Caprica {{TRS|Downloaded}}, first encounters Dr. [[Gaius Baltar]] (Miniseries).
**[[Sharon Valerii]] begins service aboard ''Galactica'' {{TRS|The Farm}}.
**Zak Adama dies in a flight school accident (Miniseries).
**Lt. [[Kara Thrace]] is re-assigned from flight school to ''Galactica'' {{TRS|Act of Contrition}}.
*'''1 Year BCH:'''
**Last time William and Carolanne Adama speak (Miniseries).
**Carolanne Adama gets engaged (Miniseries).
**[[Anastasia Dualla]] last visits her home {{TRS|Final Cut}}.
*'''Between 5 and 1 Year BCH:'''
**''The following events are all seen in "[[Daybreak, Part I]]" and "[[Daybreak, Part II|Part II]]" but are not dated.  However, they fall within this approximate time frame.''
**[[Laura Roslin]]'s father and sisters are killed by a drunk driver.
**[[Kara Thrace]] and [[Lee Adama]] first meet.
**[[Caprica-Six]] finds [[Julius Baltar]] a new home in a retirement center which encourages horticultural activities.
**[[William Adama]] ponders retirement at a security firm but rejects the job in disgust when forced to take a polygraph test.
***[[Saul Tigh|Saul]] and [[Ellen Tigh]] celebrate his (and their own) supposed retirement.
**[[Sharon Valerii]] nearly washes out of the Colonial Fleet, but is given a second chance by Commander Adama.  She promises to pay him back for his kindness.
**[[Laura Roslin]] joins [[Richard Adar]]'s presidential campaign.
**[[Gaius Baltar]] promises [[Caprica-Six]] full access to the Colonial Defense Mainframe if she helps him work on the [[Command Navigation Program]].


Additionally, an error occurs in "Hero". Dialogue from this episode claims that Adama served on ''Valkyrie'' one year prior to the [[Fall of the Twelve Colonies]], putting the date of Lt. [[Daniel Novacek|Daniel "Bulldog" Novacek]]'s capture at 21352-53. However, Adama's command of ''Valkryie'' ended in 21348, which means that Adama commanded ''Galactica'' for eight years. It has already been established in dialogue from the [[Miniseries]], "[[Act of Contrition]]", and "[[The Farm]]".
== 1 ACH ==
1 ACH (After Colonial Holocaust) denotes a period of 365 days, the epoch of which is the [[Fall of the Twelve Colonies]]. The events of this time period correspond to the majority of Season 1 and Season 2, in addition to:


=== Inference about dating structure ===
=== Return of the [[Miniseries|Cylons]] ===
*{{inlineref|0 BCH|Zero Hour}}:
**The Cylon fleet gathers at a staging area close to [[The Colony]] {{TRS|The Plan}}.
**John Cavil makes his final preparations for the impending assault and visits a sealed-off resurrection chamber housing deactivated copies of the [[Final Five]] {{TRS|The Plan}}.
**The [[Armistice Station]] is destroyed by [[Cylons (RDM)|Cylon]] forces, appear, and show themselves, (albeit in a more advanced form, as well as a humanoid version) for the first time in 40 years {{TRS|Miniseries, Night 1}}.
**[[Laura Roslin]] is diagnosed with inoperable breast cancer {{TRS|Miniseries, Night 1}}.
**''[[Galactica (TRS)|Galactica]]'' is decommissioned {{TRS|The Plan|Miniseries, Night 1}}.
**''[[Pegasus (RDM)|Pegasus]]'' undergoes refit while [[Kendra Shaw]] is assigned to the ship from the [[Ministry of Defense]] {{TRS|Razor}}.
**A Cavil meets with [[Caprica-Six]], who gives him the access codes to the Colonial Defence Mainframe {{TRS|The Plan|Miniseries, Night 1}}.
**The Cylon strike force simultaneously jumps into orbit around all the Twelve Colonies and commences an all-out attack {{TRS|The Plan}}, using strategic nuclear bombardment {{TRS|Miniseries, Night 1}}.
**[[Picon (RDM)|Picon]] [[Fleet Headquarters]] is destroyed {{TRS|Miniseries, Night 1}}.
**[[Ellen Tigh]] is placed aboard Raptor from the medical ship ''[[Rising Star]]'' by [[John Cavil]] shortly before it escapes the destruction of Picon {{TRS|The Plan|Tigh Me Up, Tigh Me Down|No Exit}}.
**''Galactica''{{'|s}} last [[Viper Mark VII]] squadron is destroyed {{TRS|Miniseries, Night 1}}.
**A battle near [[Virgon (RDM)|Virgon]] ends with the total loss of the remaining Colonial Fleet including the flagship ''[[Atlantia (RDM)|Atlantia]]'' {{TRS|Miniseries, Night 1}}.
**The [[Mercury class battlestar|battlestar]] ''[[Pegasus (RDM)|Pegasus]]'' luckily escapes the destruction of the [[Scorpion Fleet Shipyards]] {{TRS|The Plan|Razor|Pegasus}}.
**The Cylons begin landing ground forces on the Colonies {{TRS|The Plan|33}}.
**''Galactica'' engages [[Cylon Raider (RDM)|Cylon Raider]]s and survives with moderate damage and 85 dead {{TRS|Miniseries, Night 1}}.
**Last transmission from the Colonies received by Laura Roslin aboard ''[[Colonial Heavy 798]]'' from a [[Jack|fellow secretary]] {{TRS|Miniseries, Night 1}}.
**[[Case Orange]] contingency mechanism assigns Roslin the office of the President of the Twelve Colonies {{TRS|Miniseries, Night 1}}.
**Roslin gathers stranded civilian and military ships in the vicinity of {{RDM|Caprica}} {{TRS|Miniseries, Night 1}}.
**Commander [[William Adama|Adama]] assumes overall Fleet command and orders regroup at [[Ragnar Anchorage]] {{TRS|Miniseries, Night 1}}.
**Roslin's fleet survives two Cylon attacks and meets at Ragnar {{TRS|Miniseries, Night 2}}.
**''Galactica'' changes from battle stance to civilian protection, and escorts the civilian fleet from Ragnar towards the [[Prolmar Sector]] {{TRS|Miniseries, Night 2}}.
**The Twelve Colonies of Kobol lie in irradiated ruins.  Their military has been utterly defeated and their infrastructure has been crushed.  The result of the engagement is a complete victory for the Cylon forces {{TRS|Miniseries, Night 2|The Plan}}.
**The Cylon occupation of the Colonies begins {{TRS|33|Downloaded|The Plan}}.


If the five-digit string following the solidus is in fact the year, as seems inescapable based on the above, the letter-digit sequence before it must indicate the position in the year. There are 260 unique letter-digit sequences of that format, which may indicate a shorter year in the Colonial calendar, essentially a year of twenty-six ten-day weeks. However, what has been revealed about Colonial timekeeping is too incomplete to draw any conclusions.
=== Season 1 ===
:''See [[Timeline - Season 1 (RDM)]]''


However, if the above is to be inferred, a striking inaccuracy occurs because of this service record. Prior episodes have firmly established that the Colonial year is analogous to one Earth year of 365 days. In "[[Tigh Me Up, Tigh Me Down]]", the [[Cylon detector]] takes 11 hours to thoroughly test each blood sample. As there are 47,905 tests (526,955 hours) this will take him 21,956 days, which Six then computes will take approximately 60 years, the same as it would here. The dating further established in "[[Lay Down Your Burdens, Part II]]", "[[Battlestar Galactica: The Resistance]]", and "[[Occupation]]" also support this comparison.
=== Season 2 ===
:''See [[Timeline - Season 2 (RDM)]]''


It is astonishing to learn that the Colonials have -- or believe they have -- over 21,000 years of recorded history. By comparison, Pythia was said to have recorded her prophecies 3,600 years ago ([[The Hand of God]]) and the Great Exodus from [[Kobol]] took place just 2,000 years ago. On [[Earth]], Human civilization is only about 6,000 years old.
== 2 ACH to 3 ACH ==
The "one year time jump" depicted at the end of the {{TRS|Lay Down Your Burdens, Part II|prose=yes}} occurs during 2 ACH, beginning with the Cylon invasion of [[New Caprica]] as a result of [[Gina Inviere]]'s ''[[Cloud 9]]'' explosion, forcing the subsequent retreat of the last two [[Battlestar (RDM)|battlestars]], [[Galactica (TRS)|''Galactica'']] and [[Pegasus (RDM)|''Pegasus'']].


=== Further contradictions ===
=== Season 3 ===
:''See [[Timeline - Season 3 (RDM)]]''


Adama's [[:md:Image:3x8-Hero-ResignationLetter.jpg|resignation letter]] at the end of the episode appears to be dated in an entirely different format. It's difficult to read clearly, but it appears to be dated "27/89/9923".
== 3 ACH to 4 ACH ==


In addition, [[:md:Image:Execution Order Signature.png|the execution order]] written by the [[Cylon Occupation Authority]] and signed by then-President Gaius Baltar is dated "this second day of 3454-91" ([[Occupation]]).
=== Season 4 ===
:''See [[Timeline - Season 4 (RDM)]]''


Given this, it is extremely likely that little thought was given to the Colonial calendar dating scheme to date.
== References ==
{{reflist}}


== Notes ==


*The above day listings use a simplistic calendar system with 30 day months and no leap years. The colonial calendar may be more sophisticated.
[[Category:A to Z]]
*The date of Valerii and Agathon's child is speculated from the events in [[Season 1 (2004-05)|Season 1]] and during the events of "[[Resurrection Ship, Part I]]", assuming that the [[Cylon agent]]s share the same gestation period that humans do, and that the birth of their hybrid daughter is not premature. It is later confirmed that [[Hera]]'s birth occured on Day 270.
[[Category:Behind the Scenes]]
*Later episodes in "Season 2.5" such as "Resurrection Ship, Part I" and "Epiphanies" state clearly that "Pegasus" and the episodes immediately following it take place six months after the Cylon Attack.  Ron D. Moore did state that it took Tyrol "weeks" to construct the Blackbird and a large amount of time passes in this episode as a result. ''BattlestarWiki'' originally assumed this meant at most 2-4 weeks.  However, the only plausible way that Pegasus and Resurrection Ship, Part I can take place six months after the attack is if "Flight of the Phoenix" actually lasted''' three months '''from beginning to end. Roslin was told in this episode that her cancer had accelerated, and she had only one month to live. As Cally's "welcome back" party happened earlier in the episode, when she was released from the brig around Day 86, a considerable period of time (several weeks at least) pass between these two scenes.
[[Category:Colonial History]]
*The Colonial calendar is fairly similar to the Gregorian calendar, using 24 hour days and approximatly 365 day years. The best example of this is in "[[Tigh Me Up, Tigh Me Down]]", where Baltar says that each test takes 11 hours. As there are 47,905 tests, amounting to 526,955 hours worth of tests, this will take him 21,956 days -- 60.1534 years (as confirmed by Baltar's [[Number Six|Internal Six]]), the same as it would on Earth.
[[Category:RDM]]


[[Category:A to Z]] [[Category:Behind the Scenes]]  [[Category:Colonial History]] [[Category:RDM]]
[[de:Zeitlinie]]
[[fr:Chronologie (RDM)]]

Latest revision as of 17:39, 24 February 2024

Part of the series on
Timelines of the Battlestar Galactica series


This article plots the events which were shown or mentioned in the history of the Twelve Colonies from the Re-imagined Series and Caprica.

By convention, all dates are relative to the Fall of the Twelve Colonies. Events before the Fall are marked as "BCH," or "Before Cylon holocaust". Given the few and somewhat contradictory dates about the Colonials' ancient history and the exodus from Kobol, that part of the timeline is speculative.

The Cylon holocaust occurs more than 150,000 years ago.

Ancient History

See also: History of the Twelve Colonies, Sacred Scrolls
  • Unspecified time period: Humans on the planet Kobol organize themselves into twelve tribes (TRS: "Miniseries"). According to at least one scripture, they "live in utopia with the gods." The humans become sufficiently advanced to establish viable space travel and artificial, robotic life. Artificial life-forms, machines similar in nature to the later day Cylons, are created by the humans. A war against the machines occurs. At one point the machines evolve and take humanoid form, either before, during or after the war. This group of humanoid Cylons are later referred to in the Sacred Scrolls as the "Thirteenth Tribe," although said text does not specify that they were a tribe of Cylons (TRS: "Sometimes a Great Notion").
  • Over 17,000 years BCH: A supernova creates the Ionian nebula.
  • ca. 4,000 years BCH: The Thirteenth Tribe reportedly leaves Kobol and builds the Temple of Hopes on another planet [1] This contradicts Ellen Tigh's statement that the temple was built 3,000 years ago (TRS: "No Exit"). They pray for guidance and are shown the way to Earth, the planet they colonize.
  • ca. 3,600 years BCH: Pythia records her prophecies. Aside from reports of the landing on Earth and drawings of temples there, this book describes "the exile and rebirth of the human race" and a "dying leader" not making it to a "promised land," though how long before her writings that such events took place is not revealed.
  • ca. 3,000 years BCH: A beacon is left at the Lion's Head Nebula, later marking the way to Earth. At some undated point, someone travels from Earth to Kobol, passing on information about Earth, including a map of its night sky [2]
  • ca. 3,000 years to 2,000 years BCH: The humanoid Cylons of the Thirteenth Tribe prosper and begin to reproduce sexually. The technology of "organic memory transfer," or downloading, is abandoned.
    • The Thirteenth Tribe produce their own mechanical Centurions to act as laborers for their civilization.
  • ca. 2,000 years BCH: (The order of events on Kobol and Earth is uncertain.)
    • Samuel Anders, Tory Foster, Ellen Tigh, Saul Tigh, and Galen Tyrol, later collectively known as the "Final Five," are born on Earth.
    • The Final Five work together in a research lab attempting to re-develop downloading technology. The effort is spearheaded by Galen Tyrol and Ellen Tigh.
    • All five Cylons receive visions of beings nobody else can see warning them of an impending rebellion by Earth's Centurion population. The Final Five prepare a resurrection ship and leave it in orbit.
    • The remaining Twelve Tribes leave Kobol and settle the Twelve Colonies[1].
    • Lord of Kobol "Athena" kills herself in despair over this. A tomb is built for her containing a 3-D projection showing Earth and its Zodiac. The projection is activated by the Arrow of Apollo, which travels with the twelve tribes.
    • The Centurion uprising occurs and the Thirteenth Tribe exterminates itself in a nuclear holocaust. Earth is left a nuclear wasteland. The Final Five die in the attack, and are resurrected on board their orbiting ship.
    • The Final Five begin a journey back to Kobol to find the other twelve tribes and inform them of Earth's fate. They are aware of the cyclical nature of history and believe that the twelve tribes will create Cylons again. They want to warn them to treat them right. However, their ship is not equipped with a conventional FTL drive and journeys at relativistic sublight speeds.
  • 2,000 years to 52 years BCH: The Twelve Colonies grow and prosper. Each colony acts as a sovereign nation, complete with inter-colonial wars.
    • The Final Five stop at the Temple of Hopes as they retrace their tribe's path.
    • The Final Five arrive at Kobol, finding the planet abandoned. They continue on in pursuit of the twelve tribes, heading toward the colonies.

Recent Colonial History

The most recent history could also be dated using the calendar from Caprica, but the method was not used in the re-imagined series and remained in the background even on the new show. Furthermore, it is not known whether the calendar is specific to the planet Caprica or common to the twelve worlds.

First Cylon War

See Timeline - Caprica (RDM)
  • 58—52 years BCH: With the use of a meta-cognitive processor stolen from Tauron rival Tomas Vergis, the Caprican tech CEO Daniel Graystone creates the first Cylons of the Twelve Colonies to aid in hard labor and warfare. A virtual copy of his dead monotheist daughter Zoe Graystone's consciousness is downloaded into one (CAP: "Pilot"). Humanity is unaware that they are repeating the actions of their ancestors on Kobol.
  • ca. 58 BCH:
  • 52 years BCH:
  • 51 years BCH: Colonial ship Brenik is lost after a boarding action by Cylon Centurions (Valley of Darkness, deleted scene).
  • ca. 50 years BCH: Battlestar Galactica enters service.
  • 42 years BCH:
    • William Adama begins his service in the Colonial Fleet as a Raptor pilot aboard Galactica with co-pilot and ECO Coker Fasjovik, 10 years into the Cylon War ("Hero," Blood and Chrome). He is later promoted to Lieutenant and is assigned his first Viper, a Mark III, and a special task force comprised of top pilots for dangerous missions.
    • Battlestar Archeron destroyed by Cylon forces in Sector 12. All hands lost (TRS: "Blood and Chrome").
    • Battlestar Osiris destroyed over Djerba in suicide maneuver against lone Cylon Baseship. All hands lost. Fate of Lt. Jim Kirby (AWOL) unknown.
    • Becca Kelly succeeds in her mission on Djerba, and is later killed by the Cylons. Ghost Fleet Offensive successful, decimating Cylon military holdings in five sectors.
    • Mechanical Cylons begin experiments constructing humanoid forms of Cylon.
  • 42-41 years BCH: Coker Fasjovik presumably musters out of Fleet after termination of second mandatory tour.
  • 40 years BCH:
    • Experiments on "humanoid" Cylons culminate in the creation of the First Hybrid and subsequent Hybrids, but no fully humanoid forms.
    • The Final Five arrive in the Twelve Colonies in the waning days of the war.
    • The Five meet the local Cylons and negotiate an end to the war. They will give the Cylons biological bodies complete with resurrection technology if the Cylons agree to end the war.
    • Operation Raptor Talon conducted by the Colonial Fleet, where William Adama flies his first official Viper mission. Battlestar Columbia destroyed (TRS: "Razor Flashbacks").
    • Armistice ends the Cylon War. Cylons exile themselves from the Twelve Colonies (TRS: "Miniseries"). The First Hybrid and his Guardians part company with the other Cylons.
    • William Adama musters out of the Colonial Fleet ("Scattered," Adama's dossier).

Inter-War Period

  • 37 BCH: William Adama enlists as merchant marine and serves aboard inter-colony freighters ("Scattered," Adama's dossier).
  • 37 to ca. 30 BCH:
    • The Cylons establish a secret base known as The Colony, built around and connected with the original ship of the Final Five. This is the place where research and development equipment belonging to the Final Five is stored.
    • The Final Five create John Cavil, the first of the new humanoid Cylons that are their "children," and designate him model Number One. They raise him for some time.
    • John matures and assists the Final Five in the creation of seven other humanoid Cylon models. A resurrection system is built for the new models based on technology left over from the Thirteenth Tribe.
  • ca. 30 BCH:
    • Cavil murders model Number Seven, Daniel, out of jealousy by poisoning the amniotic fluid in which the Seven copies were maturing.
    • The Final Five are murdered by Cavil and their consciousnesses are boxed.
    • Cavil erases all knowledge of the Final Five and the missing model Number Seven from his fellow humanoid Cylon models and specifically programs them not to think about either.
    • Saul Tigh is resurrected and introduced to the colonies as a military officer with false history of fighting in the war.
    • Ellen Tigh is resurrected and introduced into Colonial society sometime thereafter.
  • ca. 28 BCH:
  • ca. 27 BCH: William and Carolanne Adama meet and marry. [7]
  • ca. 26 BCH: Lee Adama born. [7]
  • ca. 24 BCH: Zak Adama born. [7]
  • 23 years BCH: William Adama reinstated in the Colonial Fleet at the rank of Captain and is assigned to the battlestar Universal [8] ("Scattered" deleted scene, Adama's dossier).
  • 21 years BCH: Saul Tigh reinstated in the Colonial Fleet at the rank of Captain by now-Major Adama (Scattered). [9] [10]
  • 20 years BCH:
  • 17 BCH: William Adama assigned to the battlestar Atlantia, where he makes his 1000th Viper landing (Adama's dossier, "Act of Contrition").
  • 13 years BCH: William Adama assigned as executive officer to the new battlestar Columbia (Adama's dossier).
  • 11 years BCH: Laura Roslin begins her career in politics (TRS: "Litmus").
  • ca. 10 years BCH: Galen Tyrol enlists in the Colonial Fleet as a non-commissioned officer.[11]
  • 9 years BCH: William Adama promoted to commander and assigned as commander of the battlestar Valkyrie (Adama's dossier, "Hero").
  • 7 years BCH: Saul and Ellen Tigh meet and marry again, unaware that it is the second time ("Kobol's Last Gleaming, Part I," deleted scene).
  • 6 years BCH: William Adama leads an aborted covert intelligence mission aboard Valkyrie. Daniel Novacek is shot down and captured by the Cylons. Adama and Tigh are subsequently assigned to Galactica (Adama's dossier, "Hero"). [12]
  • 5 years BCH:
  • 4 years BCH:
  • 3 years BCH: Felix Gaeta assigned to Galactica (Miniseries).
  • 2 years BCH:
  • 1 Year BCH:
    • Last time William and Carolanne Adama speak (Miniseries).
    • Carolanne Adama gets engaged (Miniseries).
    • Anastasia Dualla last visits her home (TRS: "Final Cut").
  • Between 5 and 1 Year BCH:

1 ACH

1 ACH (After Colonial Holocaust) denotes a period of 365 days, the epoch of which is the Fall of the Twelve Colonies. The events of this time period correspond to the majority of Season 1 and Season 2, in addition to:

Return of the Cylons

Season 1

See Timeline - Season 1 (RDM)

Season 2

See Timeline - Season 2 (RDM)

2 ACH to 3 ACH

The "one year time jump" depicted at the end of the Re-imagined Series' "Lay Down Your Burdens, Part II" occurs during 2 ACH, beginning with the Cylon invasion of New Caprica as a result of Gina Inviere's Cloud 9 explosion, forcing the subsequent retreat of the last two battlestars, Galactica and Pegasus.

Season 3

See Timeline - Season 3 (RDM)

3 ACH to 4 ACH

Season 4

See Timeline - Season 4 (RDM)

References

  1. ↑ 1.0 1.1 Tyrol says that "Our initial radiocarbon dating suggests that the temple's at least 4,000 years old, which lines up with the exodus of the Thirteenth Tribe." (TRS: "The Eye of Jupiter"). This is the oldest date noted in the series's timeline, but also conflicts with the prior date of Pythia and her works as described by Elosha in "Kobol's Last Gleaming, Part I," where she states that the exodus of all 13 tribes occurred approximately 2,000 years ago.
  2. ↑ Adama says that "According to Cottle, the virus was an exact match to one reported over 3000 years ago, right around the time that the 13th colony left Kobol" (TRS: "A Measure of Salvation"). This contradicts the two other dates of 2,000 and 4,000 years. While the dating is uncertain, it is the only clue to the beacon's age. That someone traveled back to Kobol is speculation, but an explanation for how Earth's sky could be displayed there. If true, it is still unknown on which of these two voyages the beacon was left behind.
  3. ↑ Doctor Cottle notes the time as "a couple hundred years ago," which is an indeterminate amount of time, but likely less than four or five hundred years.
  4. ↑ From Ronald D. Moore's scifi.com blog post of April 11, 2005: "Colonial Day occurs every year and it is the anniversary of the founding of the "federal" system of government which was a relatively recent event. Before that time, the Colonies functioned more or less on their own, possibly with various attempts at alliances or even complete Colonial government over the centuries since the exodus from Kobol, none of which were successful. When the first Cylons were created, individual Colonies still warred against one another and it wasn't until the Cylon rebellion that the 12 Colonies finally came together in a permanent way. Presumably, the Articles of Colonization were not made up out of whole cloth, however, and there may well be principles and ideas of justice that date back to the original colonists."
  5. ↑ At the time of the Cylon attack, Tyrol has "ten years experience" (TRS: "Miniseries"), and has "served on battlestars since I was 18" (TRS: "Resistance"). This puts his birth in approximately 28 BCH, allowing for a few years leeway with the first comment.
  6. ↑ The podcast for "Scattered" places their meeting "twenty years ago". In "Torn," Adama states that he has known Tigh for 30 years. Furthermore, Adama's dossier places his reinstatement into the Colonial Fleet at 23 BCH. Battlestar Wiki choses to use the more consistent dates.
  7. ↑ 7.0 7.1 7.2 This date is assumed as follows: Zak died 2 BCH. Since he graduated from some kind of military academy, he would be at least 22 years old, following real world models. On a photograph of William Adama with his sons, Lee seems to be about two years older than Zak. Adama and his wife probably met not long before Lee's birth.
  8. ↑ This information comes from a prop used in the episode "Scattered".
  9. ↑ The time between Adama's and Tigh's reinstatement is not specified on screen. The February/March issue of Battlestar Galactica: The Official Magazine gives it as two years: "Adama reenlisted with the service and Tigh spent two years drinking before Adama pulled strings to get him back into service."
  10. ↑ In actually, this is Saul Tigh's entrance into the Colonial Fleet, not his return, as he did not serve in the Cylon War and all documents of his service and retirement were forged by John Cavil.
  11. ↑ At the time of the Cylon attack, Tyrol has "ten years experience" (TRS: "Miniseries"). It is likely that Tyrol (and the two other remaining members of the Final Five, Samuel Anders and Tory Foster), was introduced into Colonial society at or around this point by John Cavil as part of his plan for revenge on his creators, human and Cylon alike (TRS: "No Exit").
  12. ↑ While dialogue from "Hero" places these events at 1 BCH, this contradicts previously established dates about the time Adama and others served on Galactica. See Hero#Analysis for a detailed explanation why Battlestar Wiki chooses to treat this as a continuity error and change the date.
  13. ↑ Since Adama states that Tyrol has been under his commander for "over five years," this might also be one year earlier.
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