Chronology of Supernatural

The chronology of Supernatural is very complicated, as no precise dates are given in many episodes - The episodes with clear, precise dates being Pilot and The End. The show is currently set in 2014, and it is presumed to have begun sometime in 2005, as evidenced by the murders committed by Constance Welch from 2003-2005. Clear dates are given in the early chronology of the Winchester family, i.e. Dean was born in the 1970s and Mary died in 1983. Shown below is a construction of the chronology of Supernatural.

Primeval/Primordial times

 * Before there was anything, there was the Darkness. This force was the source of all existence that pre-dates anything of God's creations including himself, yet was evil and devoured all it could.
 * Somehow, God and Death came into existence.
 * God defined the laws of physics and created the physical Universe. Furthermore he created Heaven as His holy dwelling place, with God's Throne Room at the center and the Axis Mundi as the central road through the realm.
 * God created the first beasts known as the Leviathans, but realizing their potential and recognizing how destructive they are, He creates Purgatory and locks the beasts away inside.purgatory would also become the destination for deceased Monster souls as well in the future.
 * God creates at least 4 Archangels. those being Michael,Lucifer,Raphael and Gabriel.
 * The Darkness attacked God, and so He rallies the Archangels, the only beings strong to imprison it, and together they imprisoned The Darkness inside the Earth. To contain the Darkness, God made the Mark of Cain, which is a lock to the Darkness' cell, and if the Mark is destroyed, the Darkness will be set free.
 * Eve appeared around this time.
 * God Created the other angels.
 * Metatron is named God's Scribe, and he starts dictating as creation is being formed.
 * God loved Lucifer most out of all his sons, more so than even Gabriel and Michael.
 * God created Earth, the souls and creatures to live on it.
 * God created Hell.
 * God assigned Atropos and her sisters the job of guiding destiny according to His design.
 * Death and his Reapers started to manage the flow of life and death.

Birth of Humanity

 * Castiel is stationed in Anna's garrison and is stationed on Earth. He watches the very first fish crawl onto land and an older angel tells him not to step on it, because God has big plans for that fish.
 * Eve creates an army of monsters to overcome the future human race. She creates the Alphas the very first monsters and the Alphas begin turning humans into monsters who in turn infect more humans into monsters.
 * God asks his angelic children to bow down and worship or love humans as he believes humanity to be the best of all his creations. Lucifer begins to feel the effects of the Mark God gave him. He begins to develop warmongering charateristics. Castiel and Uriel interact with Lucifer in Heaven, and Uriel is captivated with their older brother's power and beauty, feeling sympathy for his disdain for humans.
 * In defiance of God, as the Mark corrupts him further, Lucifer twists Lilith's soul into the very first demon. Lucifer then asks Michael, his older brother, to stand by him in conflict and the war, but God tells Michael to cast Lucifer into Hell.
 * Lucifer meets Cain, and gives him the Mark, which  becomes known as the Mark of Cain, the catch is that Cain has to kill his brother. So, Cain kills Abel and when Abel goes to Heaven,Lucifer is reimprisoned in Hell's Pit and Cain kills himself upon his guilt, but he resurrects as a demon and a Knight of Hell. Walking the earth forever, he kills people and makes demon contacts, keeping his Mark.
 * Lucifer creates demons by turning evil human souls into monsters. He then sets up Hell's hierarchy, establishing himself as King, and lets demons spawn and multiply throughout the centuries. He inducts the first members into an elite order known as the Knights of Hell.
 * Lucifer's Cage is formed by God.
 * Lucifer is defeated and thrown into The Cage by Michael.
 * Gabriel leaves Heaven after seeing his brothers fight each other.

Pre-Abrahamic / Pagan times

 * The Pagan gods are venerated by the early humans and gain followers. Humans are primarily Pagan and the Carrigans gain many followers.
 * Among the most powerful of the gods at this time are Osiris, Ganesh, Odin, Zeus and Kali.
 * Osiris and other Egyptian gods are worshipped in Egypt.
 * Kali, Ganesh and other Hindu gods are worshipped in India.
 * Odin and other Norse gods began to be worshipped in North Europe.
 * Gabriel disguises himself as Loki aka the Trickster.
 * Zeus and other Greek gods are worshipped in Greece.
 * Zeus takes away fire from the humans, but Prometheus gives it back to them to protect them from the monsters in the world. Zeus curses Prometheus to die every day, and imprisons him in a mountain range.
 * The demon Samhain is worshipped as a god by the Ancient Celts.

8000 B.C.

 * Eve last visits Earth before going back to Purgatory.

4000 - 3000 B.C.

 * Zachariah starts working for Michael.

2300 B.C.

 * God makes himself known on Earth. God releases Death to flood Earth and destroy humanity, deciding to only save Noah and his family. Death returns to his underground coffin afterwards.

2200 B.C.

 * Castiel witnesses the fall of the Tower of Babel.

1320 B.C.

 * God gives Moses his staff, and he uses it to cause the Ten Plagues and free the Israelites from slavery in Egypt, starting the forty-year Exodus. The angels are ordered to slay every Egyptian firstborn infant, only for the lower angels (including Castiel) to have their minds wiped afterwards by Naomi.
 * Moses and the Israelites create the Ark of The Covenant.

1892 B.C.

 * Castiel witnesses the downfall of Sodom and Gomorrah.

1085 B.C.

 * God begins to gain a following amongst the Israelite people. The Israelites spread the word of God and warn people against following Lucifer.

1 A.D.

 * Jesus Christ is born.

33 A.D.

 * Jesus is crucified when he rebels against Roman rule and teaches people about God. He is resurrected and ascends to Heaven to be with God three days later.
 * God leaves Heaven. In despair at seeing their father go, the archangels decide to rule the universe in his stead, but will need the Words of God to achieve this. Naomi is ordered to debrief Metatron, but he escapes to Earth before they can get him in their hands. God continues to talk with Joshua.
 * The angels are recalled to Heaven on Michael's orders, not returning to Earth until the coming of The Apocalypse two thousand years later.

77 A.D.

 * Reapers gather in Pompeii for the eruption of Mount Vesuvius.

1000s

 * The Mayan Inyo, who would later use the alias Brick Holmes, is born around this time.

1100s

 * The witch named Patrick is born around this time.
 * The Purgatory resident who would later go by the alias Dr. Visyak is born around this time.

1200s

 * The later witch couple Don Stark and Maggie Stark are born around this time.

1300s

 * The human Ruby sells her soul to the demon Astaroth and becomes a witch. During the Black Plague epidemic in Europe (1348-1350), she dies and her soul goes to Hell, where she is tortured and eventually becomes a demon.
 * The nun Agnes writes The Book of the Damned in a vision of Darkness using her own skin as pages.

1400s

 * The vampire Boris is born around this time.
 * The witch siblings Tracy Davis and Don Harding are born around this time.
 * In 1492 Maggie Stark has a one-night-stand with Christopher Columbus. She suspects Don Stark of having a fling with a female member of the Florentine Medici family.

1500s

 * The Protestant fathers leave England, and sail to America, becoming the first white men in America. White colonization begins in the United States of America but as soon as the settlers arrive, their governor realizes that they lack efficient supplies for a long winter. He returns to England which takes him two years, and then another year returning with supplies. When he returns to the colony's camp in 1590, he finds it derelict and empty. The only clue to what happened to the Lost Colony is the word Croatoan carved onto a tree. This has become one of the biggest mysteries of American history, and to this day nobody knows what happened to the colony, as no DNA has turned up matching that of the settlers. Common theories suggest that the survivors were infected with the Croatoan Virus and killed each other.

1600s

 * Crowley is born in Scotland as Fergus McLeod in 1661, and taught witchcraft by his mother. Crowley seeks out a Crossroads Demon to whom he sells his soul for a longer penis. After a decade, he is killed by a hellhound and his soul taken to Hell. In Hell, Crowley is tortured brutally until he becomes a demon, and emerges more powerful than other demons, becoming the right hand man and possible lover to Lilith, the first demon. Unlike other demons, Crowley does not want Lucifer freed, since he knows Lucifer views demons as abominations.

1700s

 * In 1723 Crowley's son Gavin MacLeod, after the death of his parents, emigrates to the American Colonies from Scotland, but drowns when his ship goes under off the coast of Massachusetts.
 * In the 1720s Maggie Briggs is hung by Isaiah Pickett for being a witch, but he really did so because she was also carrying his illegitimate child.

1810s
In 1816 Doc Benton finds immortality

1830s

 * In 1835 Samuel Colt builds the Colt, a weapon that can kill anything in Creation with the exception of five beings, including the Archangel Lucifer.

1860s

 * Samuel Colt completes the construction of the Devil's Gate in Wyoming some time prior to 1861.
 * From the year 2011 Sam and Dean teleport to 1861, way before their time, on the hunt of a Phoenix in Sunrise, Wyoming whose ashes can be used to kill Eve, the Mother of All. The Winchesters find a Phoenix, named Elias Finch, and Dean lures him out into combat and kills him with the Colt he borrows from Samuel Colt, before he is sent back to 2011. Colt collects the ashes and sends them to the future by storing them at a post office which will deliver them to Bobby Singer's house 150 years later.
 * The American Civil War lasts from 1861 to 1865. During the Battle of Carthage on July 5, 1861, the Battle of Hellhole takes place on what later become William Jasper's Farm, close to the entrance to Death's underground coffin.
 * In 1862, the puritanical preacher Jacob Karns murders 13 prostitutes in a town on the Nine Mile Road, and is executed for his crimes, and becomes a Hookman.
 * Cain falls in love with the human Colette around the 1860s. Although she forgives him for the evil deeds he did prior to meeting her, she makes him promise not to kill anymore. He agrees and retires to live with Colette as a married couple.
 * In 1863, the Knights of Hell abduct Colette and attempt to persuade Cain to return to being their leader. This tactic proves fatal when Cain kills them instead. When he tracks Colette down, he finds her possessed by Abaddon, who tricks him into killing Colette out of her jealousy of Cain's love for Colette. Cain honors Colette's dying wish for him not to kill anymore, and so Abaddon is spared his revenge, making her the only Knight of Hell who remains alive and active.
 * The Collins brother fight on opposite sides of the Civil War. The Confederate Vance Collins is shot and killed by his Union brother, and swears vengeance on him. His body is later chosen as The Unknown Soldier. Around 150 years later his grave is desecrated and he becomes a Specter.

1870s

 * P.T. Barnum enters the circus business in 1871. Sometime in his twenty-year career until his death in 1891 he employs Charlie as his stage magician, and gives him a grimoire that contains an immortality spell, which Charlie uses on himself.

1880s

 * H. H. Holmes is executed for being America's first mass murderer. His spirit would later resurface.
 * The Merchant family are found slaughtered. Everyone believes the father Isaiah is the murderer, when in fact it is the adopted daughter Melanie who committed the atrocity. Melanie's spirit would return later when the painting of her family was sold on.
 * Dr. Benton abandons his professional work to gain immortality.

1910s

 * Max Thompson is born on October 2, 1910.
 * The RMS Titanic sails from Southampton, England, to embark on its maiden voyage. The angel Balthazar arrives in 1912 from the future, 2010, and takes up a job on the ship as an officer. He manages to alert the officers to the dangers of the iceberg and thus saves thousands of people from drowning and saves the entire ship, altering history dramatically and enabling the Titanic to sail from Southampton to New York unimpeded. However, this, coupled with Dean averting the Apocalypse, puts Atropos out of her job. Desperate to put things right, Atropos begins killing off the descendants of those on-board Titanic who survived. Things are only reverted when Balthazar is persuaded by Castiel to go back to 1912 and change history back to normal by sinking the Titanic.
 * Azazel takes Meg to see Lucifer's Crypts some time before 1913.
 * The Great War begins in 1914. War influences the desire for militarism and conquest in Germany.

1920s

 * A young girl commits suicide when she discovers she has been abused by her studio chief in Hollywood. Her ghost would later return and haunt the studio.
 * Larry Ganem is born on March 23, 1926.

1930s

 * In 1932, Jacob Karns's spirit influences a clergyman to commit murder.
 * On March 10, 1937, H.P. Lovecraft opens a portal to Purgatory. Several creatures escape, one of which possesses his maid Eleanor and thereafter called herself Dr. Elle Visyak. Another of the creatures kills Lovecraft five days later.
 * World War II begins in 1939. War influences a resurgence in militarism and conquest in Germany.

1940s

 * Wesley Mondale's grandfather finds the Tiamat Coin during the American involvement in the Battle of North Africa (1942-1943), and takes it back to the United States as a souvenir.
 * The demon Alastair is present in German-occupied Poland in 1943.
 * During World War II, The Judah Initiative battles with the Thule necromancers sponsored by the Nazis. A Golem raised by the Rabbis from the Vitsyebsk Ghetto lays waste to a Thule base in occupied Belarus in 1944. Commander Eckhart completes a ritual and escapes before the Golem can catch him.
 * Dean faces the God of Time who sends him almost sixty years back in the past from 2012. In 1944, Dean meets Eliot Ness in Canton, Ohio, who briefly hires him as his colleague. Dean is briefly trapped in 1944 when Sam tries to find a way to pull him out and get revenge on Chronos.
 * Somewhere in the 1940s Kelly Duran (Brick Holmes) meets Betsy (who would later pose as Eleanor Holmes), and begins writing her letters.

1950s

 * John Winchester is born in 1954 in Normal, Illinois to Henry Winchester and his wife, descending from Cain and Abel's family. Henry intends to raise him as a member of the Men of Letters when he comes of age to carry on their legacy.
 * Mary Winchester is born on December 4, 1954 in Lawrence, Kansas to Samuel and Deanna Campbell, who raise her to be a hunter in the way of the Campbell Family.
 * In St. Louis, Missouri on March 8, 1957, Father Thompson of the Men of Letters performs the first of his attempts to cure a demon. He is assisted by Father Simon and their efforts recorded by Josie Sands. The first trial fails, with the demon escaping and its host getting killed by the failed cure.
 * In mid-July in 1958, Peter Kent becomes possessed by a demon who forces him to eat his own children.
 * Father Thompson performs his nineteenth (and only known successful) trial of curing a demon on August 3, 1958 on the possessed Peter Kent.
 * With demons having learned of Father Thompson's demon-curing trials, the demon Abaddon kills Father Thompson on August 5, 1958, to make him an example to others. Before he dies, he divulges the basics of the demon-curing ritual under torture and tells Abaddon about Josie Sands.
 * Henry Winchester and Josie Sands are to be inducted into the Men of Letters on August 12, 1958. However, Abaddon finds Josie prior to the induction and possesses her to infiltrate the Men of Letters headquarters. Seeking to steal the key to The Men-of-Letters Bunker, she kills David Ackers, Ted Bowen, and an unnamed third man, permanently blinds Larry Ganem, and burns down the Men of Letters headquarters. Henry and Larry alone escape the slaughter and thus they alone are the only surviving Men of Letters. Larry entrusts Henry with the key to the bunker and Henry travels to 2013 to reach his by-then adult son John Winchester, but appears in Sam and Dean's motel room instead. Abaddon pursues Henry into the future, where she kills him. As a result of the time travel, Henry and Abaddon vanish without a trace from the current timeline. John and his mother think Henry left them, and she remarries to a mechanic and moves to Lawrence. Meanwhile, demons assume that Abaddon has been killed.

1960s

 * Peter Sweeney was bullied by the school bully who accidentally dunked him underwater for too long. Peter drowned and returned to haunt the lake years later.
 * The Roosevelt Asylum riots took place and the chief doctor was killed.
 * The vampire Benny Lafitte falls in love with Andrea, and is killed by The Old Man. He spends the next fifty years in Purgatory.
 * On April 24, 1967, the Impala rolls off the assembly line in Janesville, Wisconsin.
 * In 1967, Jacob Karns's spirit influences a seminarian to kill several prostitutes.

1970s

 * Cyrus Dorian drives up to the local school in a black truck, and ignites the school, killing a hundred children who were singing carols. Cyrus then is killed and his spirit thereafter travels the roads on the truck he was buried in.
 * Mary and John Winchester meet in Lawrence, Kansas, and a Cupid causes them to fall in love on Heaven's orders.
 * In October 1972, Azazel, Lucifer's loyal general, finds the gate to Lucifer's Cage in the convent in Maryland. Azazel kills several nuns to communicate with Lucifer and Lucifer tells him he needs Azazel to free Lilith, buried deep in the Pit at the time, so she can arrange for a righteous man to be sent to Hell so he can break the first of the 66 Seals to his cage. He is also instructed to find a special child to kill Lilith and destroy the final Seal, and for Lucifer to use as a new vessel.
 * John Winchester fights in the Vietnam War before he returns to Lawrence in 1973.
 * On April 30th 1973, Dean arrives after being sent back through time by Castiel from 2008. He advises John Winchester to buy the Impala. Azazel, still looking for Special Children to turn with his blood, appears in the town. Dean tries to prevent Mary from making a deal with him by retrieving The Colt to kill him, but Azazel kills Mary's parents and succeeds in sealing the deal. Dean is transported back to the future before he can comfort Mary, leaving her to think he just left her.
 * The angel Anna travels back to 1978 from the year 2010 during The Apocalypse to kill Mary (by then pregnant with Dean) and John, so Sam will never be born and Lucifer cannot use him as his vessel. Sam, Dean, and Castiel go back to stop her, while Anna calls Uriel down from Heaven to aid her, fooling him into thinking she is still his superior in the future. Michael goes back in time to smite Anna and send Uriel back to Heaven. He talks to Dean before sending him and Sam back to 2010, and wipes Mary and John's memories of the events.
 * Dean Winchester is born on January 24, 1979.

1980s

 * Amelia Richardson is born on April 20, 1980.
 * Sometime before Sam is born, John and Mary have a fight and John leaves home for a few days.
 * Sam Winchester is born on May 2, 1983.
 * On November 2, 1983, Sam is fed demon blood by Azazel. Mary Winchester tries to stop him, but is killed by the Yellow-Eyed Demon. John, Dean, and Sam escape from their burning home in Lawrence.
 * John Winchester goes into hunting.
 * Bela Talbot is born as Abbie in the United Kingdom around 1984.
 * Jessica Moore is born on January 24, 1984.
 * In March 1985, Anna Milton rebels against Heaven, and removes her Grace so she can be reborn as a human. She falls to Ohio and her grace to Union, Kentucky. During the fall, she and her grace are mistaken for meteors. By September, a full-grown oak tree that already looks to be at least 100 years old has grown out of Anna's grace. Anna Milton is born in December.
 * Constance Welch goes insane after finding out that her husband cheated on her, and drowns her children. Gaining sanity destroys her mind and she kills herself by jumping into a freezing river. Constance reappears as a Woman in White.
 * Somewhere in between 1988 and 1994, Mr Benson, one of Sam's grade school teachers, is possessed by one of Azazel's demons.

1990s

 * John meets Kate Milligan after hunting a ghoul and fathers a child with her, Adam Milligan.
 * Adam Milligan is born on September 29, 1990.
 * In 1990 Dean has the best hamburger of his life in a seaside shack in Delaware.
 * In 1991 Molly McNamara dies in a car crash when she hits and kills Jonah Greely. Her husband David survives the crash, but Molly and Jonah becomes ghosts, with Jonah tormenting Molly while she remains unaware of her real nature.
 * Somewhere in between 1991 and 1996 Kate takes Adam to a playground on a day off, and he recalls it as a fond memory.
 * Sam finds out, to his dismay, that John is a hunter, and that the supernatural world exists. Well, apart from Father Christmas.
 * Sam and Dean visit the Cleveland Botanical Gardens on a field trip.
 * Kevin Tran is born on December 2, 1993.
 * On November 24, 1994, Sam attends Thanksgiving dinner at his friend Stephanie's house.
 * At some point when Sam is a teenager, he disappears for two weeks while under Dean's watch in Flagstaff, Arizona, living off pizza in a cabin and befriending a dog he calls Bones. Dean scours the whole town looking for him and worries he might have died, and John is furious when he finds out.
 * In the year 1995, Dean lives at Sonny's Boys' Home for two months after he was caught stealing. (John leaves Dean there when he learns that Dean lost the groceries money while he was out on a hunt.) While living there, Dean briefly dates a girl named Robin.
 * On July 4, 1996, Sam and Dean celebrate Independence Day by themselves by lighting a bunch of fireworks in a field.
 * In the summer of 1997, Sam and Dean find a Werewolf and kill it. Sam uses this hunt as his holiday project to write about at school later that year.
 * In the fall of 1997, Sam and Dean are dropped off at Truman High by John for several weeks while John goes on an extended hunt. Sam goes to school and is bullied, but he doesn't know the bully (Dirk MacGregor, Jr.) is only mean because of life at home. When Sam calls the bully "Dirk the Jerk" this is the last straw and when the whole school chants that name, Dirk, the bully, kills himself soon after. Dirk returns to haunt the school, killing off people he thinks are like Sam.
 * In 1998, Abbie sells her soul to a crossroads demon in a ten-year contract in exchange for her parents being killed in a car accident. After their deaths, Abbie inherits their vast fortune. She ends up changing her name to Bela Talbot and becoming a thief and con-artist specializing in the occult.
 * In 1998, Sam befriends Amy Pond but then realizes she's a kitsune.
 * In August 1998, Dean meets Lisa Braeden on a solo hunting trip and they have a fling.
 * Ben Braeden is born in May 1999.

2000-2001

 * Sam's prom date Rachel is possessed by one of Azazel's demons.

2002

 * Sam tells John he wants college instead of a hunter's life. John tells Sam if he leaves, he should never come back. Sam goes off to college, and Dean experiences the worst night of his life. Sam doesn't speak to Dean for three years.
 * Adam Milligan meets John for the first time.

2003

 * The first murders committed by Constance Welch occur here.
 * War influences the War in Darfur to occur.
 * Sam's college friend Brady is possessed by a demon during Thanksgiving on Azazel's orders. He pretends to have become addicted to drugs and a promiscuous lifestyle, and Sam tries to help him back on track.

2004

 * In early 2004 Sam starts dating Jessica Moore after being introduced by Brady.

2005

 * Dean first recruits Sam, after three years or so of not speaking. On November 2nd Brady burns Jessica alive on Azazel's orders. Sam joins Dean, and together they defeat Constance Welch, the Wendigo, and the spirits of the Roosevelt Asylum, the ghosts of Sweeney and Dorian, and the insane Bender family.

2006

 * The brothers are reunited with their father when the demon Meg uses a trap with the Daeva she controls. However, the Daeva turn on her and throw her off the roof. Finally reunited with their father, Sam and Dean realize that he is in fact possessed by Azazel, the demon who killed their mother and killed Jessica Moore and tore apart their family. Despite himself, Sam cannot bring himself to kill Azazel, as it would mean killing John. He shoots him in the leg and rushes to hospital, but they are struck by a truck driven by a demon. After John makes a deal with Azazel to heal Dean, who meets a Reaper named Tessa, Dean recovers but Azazel takes John to Hell.

2007

 * Azazel organized a duel between his special children in an isolated area, the best would eventually be Lucifer's vessel. Sam is killed, however Dean brings him back to life through a deal.
 * Blackmailed by Azazel, Jake Talley opens a Gate to Hell, Sam kills him shortly after.
 * Among the demons that escapes hell as the gates were opened are Lilith as well as The Seven Deadly Sins.
 * Dean kills Azazel with the Colt.
 * Despite Dean's deal, he still enjoy's his life, as he has just 1 year left to until his soul goes to hell.
 * The Seven Deadly sins bring havoc upon the earth, representing their attributes much like the horsemen.
 * After Azazel's death, Lilith takes over hell, eliminating all other rivals.
 * Sam meets Ruby for the first time.
 * Sam, Dean and Bobby perform exorisms on some of the Seven Deadly Sins, some were killed by Ruby with her Demon killing knife.
 * Ruby advises Sam to find out more about the friends of his mother, she reveals that she is a demon.
 * Bobby tells Sam and Dean about Bela Talbot, a woman who steals supernatural items.
 * A female demon reveals to Sam and Dean, that many demons actually believes in a higher power, Lucifer, who was once God most beautiful and beloved angel.
 * Ruby helps Bobby in manufacturing new bullets for The Colt.
 * Sam summens a crossroad demon and demands to reverse Dean's deal, however that is beyond the power of the crossroad demon, Sam kills the Demon with the Colt
 * Sam and Dean meet Bela Talbot for the first time
 * On Christmas 2007, Sam and Dean kill Medga and Edward Carrigan.

2008

 * The Winchesters investigate a case involving 3 witches, the circumstances lead to the demon old and powerful demon Astaroth. As Sam tries to shoot Astaroth with the Colt, she uses her Telekinesis to stop the bullet in mid-air. Ruby arrives but is overpowered by Astaroth as well, however after being shortly distracted, Dean manages to kill her with Ruby's knife.
 * Ruby reveals that all demons were once human.
 * Lilith is mentioned to Sam and Dean for the first time.
 * Sam and Dean are tricked by Bela and the police arrestes them.
 * The angel Castiel is ordered by Heaven to drag Dean out of Hell when Dean breaks the first Seal binding Lucifer captive.
 * Dean meets Castiel for the first time.
 * Sam trains his demonic abilities under the guidance of Ruby, he keeps this hidden from Dean.
 * Under Lilith's command, demons start to break the other seals in order to free Lucifer from his cage.
 * Michael let some of them support Sam and Dean in preventing the apocalypse. However, it was never his true intention to prevent Lucifer's release, he just wanted to avoid a rebellion among the lower angels like Castiel.
 * Castiel sends Dean back in time, to teach him a lesson about destiny.
 * Samhain raises around Halloween, but Sam sends him back to hell.

2009

 * Sam, Dean and Ruby help the fallen angel Anna to regain her grace.
 * Sam kills the high ranked demon Alastair with his special abilities.
 * Sam and Dean meet the prophet Chuck, who is unknow to them, God himself. They recognize that everything he predicts actually happens that way. Lilith tries to make a deal with Sam as she knows that she herself is the last seal.
 * Ruby further manipulates Sam into drinking demon blood, finally strong enough they start looking for Lilith. The angels imprison Dean but he convinces Castiel, that he should better help him stop the apocalypse. As they ask Chuck for Sam's current location, Raphael appears and kills Castiel. Meanwhile, Sam kills Lilith and Ruby reveals herself as a traitor, Dean kills her.
 * The cage opens and Lucifer rises under immense emission of bright white light, God teleports the Winchesters out of danger. This marks the begin of the apocalypse.
 * Lucifer starts to mentally torture his plan B vessel Nick, Nick eventually allows Lucifer to use him as his vessel. Zachariah tells Dean that he is Michael's true vessel, God resurects Castiel.
 * Lucifer starts to bind the horsemen to him, one of them, War, starts to deceive humans and cause war between them. Sam and Dean finally cut War's ring of, therefore prevent him from doing more harm.
 * Dean and Castiel capture the archangel Raphael with holy oil. Raphael believes that God is dead and Lucifer resurected Castiel. Lucifer appears in Sam's dreams and tells him, that he is his true vessel.
 * Zachariah sends Dean to the future, Dean meets himself in 2014. The older Dean tries to convince Dean to say "yes" to Michael, but Dean refuses. Later, Lucifer kills the older Dean and says that whatever Dean changes, he will always end up here. Lucifer vanishes and Zachariah takes him back to the present.
 * Sam and Dean meet Jesse Turner, Castiel informs them, that Jesse will become the antichrist and at the peak of his power, Lucifer will use him to destroy all the angels with a single word. However, while Castiel fails to kill him and is transformed into a toy figure, the demon that produced Jesse fails to bring him to Lucifer due to the Winchesters intervention.
 * The Winchester brothers find out, that the Trickster is indeed the archangel Gabriel, He warns them that the apocalypse has long been foretold and they can't prevent it.
 * Sam and Dean meet Crowley for the first time, he gives them The Colt and bullets, anyway the Colt fails to kill Lucifer and he continues to bind and rise Death using a ritual, that requieres all humans in an entire town as sacrifice. He makes the prediction, that Sam will say "yes" to him during the next 6 months. Castiel refuses to work for Lucifer.

2010

 * Optimistically, Anna tries to prevent Lucifer's victory by destroying his vessel, Sam, on an atomic level and spread these trillions of atoms all across the galaxy. As Castiel hinders her from doing so, she travells back in time to kill Sam and Dean's parents before Mary gave birth to them. However, Castiel sends Sam and Dean back in time as well but Anna defeats them with the help of Uriel. Finally Michael appears from the future, kills Anna by merely touching her, sends Uriel back to heaven, erases John and Mary's memories and sends Sam and Dean back to the present.
 * Famine is defeated by Sam, however, he uses his demonic abilities to achieve this. More and more desperate, he locks Sam into the panic room and Dean asks God for help
 * On Lucifer's command, Death raises dead people, including Bobby's dead wife.
 * Sam and Dean are killed by angry hunters and hope to find God in heaven in order to ask him for help only to find out, that God is unwilling to stop the apocalypse, as this is "not his problem". Dean looses all hope and Castiel looses faith in his father.
 * The whore of babylon is killed by Dean Winchester, something only a true soldier of heaven can accomplish. This indicates that Dean is ready to be Michael's vessel now.
 * Dean seeks a way to contact Zachariah but Sam and Castiel prevent him from doing so, meanwhile, Zachariah is setting up a trap for Dean, he orders that their half brother Adam must be resurected. While he is able to lure Dean into his trap, Zachariah is killed by Dean Winchester, who no longer wants to be Michael's vessel. Michael finally uses Adam as his vessel, as Dean escaped again.
 * The pegan deitis are discussing the apocalypse and intend to kill Sam and Dean, because they are the vessel of Michael and Lucifer. Lucifer appears and kills all the pegan deitis except for Kali, who is rescued by Lucifer's younger brother Gabriel. Gabriel is killed by Lucifer, however he recorded a important message for Sam and Dean on a video tape, giving them finally the necessary information how to stop the apocalypse.
 * Crowley helps the Winchesters to gain one of the horsemen's ring.
 * Lucifer wants to mass infect humanity with the croaton virus. However, Sam, Castiel and Bobby are able to prevent this with the help of Crowley. Meanwhile, Dean meets Death for the first time. Death gives him his ring and explaines how to use them. Death decides to spare Chicago from destruction since he likes the pizza there.
 * Intending to trick Lucifer, demon blood empowered Sam invites Lucifer finally to use him as his vessel. Despite Sam's efforts, Lucifer quickly gains full control of Sam's body. Lucifer and Michael are ready for the battle of armageddon, but through the intervention of Dean, Bobby and Castiel, Sam overpowers Lucifer mentally, reopens the cage and drags himself, Adam and the two celestial beings into the abyss. God resurects Castiels for all his efforts and promotes him to a seraph.
 * Lucifer starts to torture Sam.
 * Confident of his new powers, Castiel pulls Sam out the cage, however he is unable to free Sam's soul from the cage.
 * Dean Winchester abandons his former life as hunter and settles with his girlfriend somewhere.
 * Soulless Sam starts to hunt.
 * Castiel meets the Host of Heaven.
 * Raphael informs Castiel, the he expects Castiel to reopen the cage to free Lucifer and Michael in order to restart the apocalypse. As Castiel refuses he beats him up.
 * Crowley manages to become the new King of Hell, however, his position is not that stable as other demons seek to overthrow him. He makes some reforms in hell, changing hell's appearance significantly.
 * Castiel intends to ask Dean for help, however, Crowley appears to Castiel and brings him a deal,the deal being that they find and torture monsters for the location to purgatory, so they can use the monster souls for power and split them 50/50. Crowley needs them to keep his position as the king of hell and castiel needs them to fight Raphael and his angel followers.
 * Castiel gains 50000 souls from hell, this allows him to start a war against Raphael. He banishes Raphael temporarily and annouces infront of many angels, that there will be no apocalypse again, therefore the civil war in heaven begins.
 * Castiel builds his angel army while he secretly works with Crowley in order to find the purgatory.
 * Soulless Sam meets a group of hunters guided by his grandfather.
 * Soulless Sam shoots Robin during some hunt.

2011

 * A group of djinns take revenge on Dean, this forces soulless Sam to interfere, and therefore Sam and Dean meets for the first time in a year. However, Dean doesn't know that Sam has no soul.
 * Dean notices that Sam is in some way different.
 * Investigating a series of odd death's, they advise Castiel for help, who informs them there is a civil war in Heaven and that some of Heaven's weapon were stolen, they must relocate them to stop further death's. During their investigations they locate a young boy who sold his soul for one half of Moses staff and find out, that an angel called Balthazar is responsible for this. They find Balthazar, but unknown to them, Raphael followed them as well. In the further course of events Balthazar destroys Raphael's vessel with one of God's weapons and releases the boy's soul.
 * Crowley is forced to return Bobby's soul.
 * Dean makes his experiences, how it is to live as a monster, in that case a vampire. However, he manages to reverse the procedure and realizes that he put his girlfriend and her son in great danger.
 * With Castiel's help, Dean finds out that Sam's soul is still in the cage.
 * Soulless Sam's behavior becomes more and more dangerous for everyone.
 * Crowley claims that he could free Sam's soul from the cage, and convince Sam and Dean to work for him.
 * Sam and Dean meet Meg again, she helps them to locate Crowley's secret torture and research facility. Crowley admits that he can't free Sam's soul and his bones get burned by Castiel. Unknown to Sam and Dean, Castiel faked Crowley's death as he still needs him to find the purgatory.
 * Seeing no other way out, Dean contacts Death to retrieve Sam's soul. Death demands that Dean should experience how it is to be Death and asks him to put on his ring. He doesn't manage to pass Death's test, anyway Death is satisfied that Dean now recognizes some parts of the true nature of the universe. Death travels to hell, frees Sam's soul and puts it back to his soulless body. In order to protect Sam from memories of the horrific Lucifer's horrific torture, he places a wall in Sam's mind.
 * Sam reawakens some time after Death retrieved his soul but neither remembers what happened in the cage nor what happened during the last year.
 * Eve escapes purgatory with the help of some monsters. She begins to bring havoc upon the world.
 * The wall in Sam's mind starts to break.
 * In order to deceive Raphael, Castiel and Balthazar send Sam and Dean to an alternate universe. Through that, he is finally able to get all weapons of heaven. An angry Raphael is forced to flee since Castiel threatens to kill him.
 * The civil war in heaven goes on, in order to increase his power, Castiel steels tousands of souls by changing the past. However, Atropos threatens him to kill Sam and Dean for this. Since he can't always protect them, he is forced to reverse his act and orders Balthazar to resink the Titanic.
 * Sam, Dean and Bobby find a way to kill Eve and with some difficulties, help by Castiel and Samuel Colt, they finally obtain a weapon which can kill her.
 * Eve experiments with humans to create a new and more powerful species of monsters, despite many failures, she is finally able to create a perfect new kind of monster, later called "Jefferson Starships".
 * Sam, Dean, Castiel and Bobby finally have clues about Eve's whereabout. As they arrive, the city seems to be perfectly normal, however, they don't recognize that they are all Jefferson Starships. Eve blocks Castiel's power and claims that Crowley is still alive. She says that she is building up a monster army to defeat Crowley for torturing her children and intending to steal all souls in purgatory. Dean tricks her into biting him and therefore consuming phoenix ash, she dies and Castiel kills the remaining Jefferson Starships in an burst of white light.
 * Sam and Bobby starts to become suspicious about Castiels true intentions.
 * Sam, Dean and Bobby find out, that Castiel and Crowley cooperate in order to find the purgatory. They catch Castiel in a circle of holy oil, confront him with that and Castiel explains that all of his actions are necessary to stop Raphael from restarting the apocalypse. Furthermore, he confirms that he pulled Sam out of hell but was unable to free Sam's soul as well. Merely convinced, Dean demands that he should stop looking for the purgatory but Castiel refuses. Crowley and an army of demons appear and free Castiel.
 * Crowley kidnapps Dean's girlfriend and her son to distract Dean. He manages to free them with Balthazar's help and despite their conflict, Castiel erases Lisas and her son's memories on Dean's demand.
 * Castiel finally finds out how to open a portal to purgatory, he tears down the wall in Sam's mind to ensure, that the Winchesters are distracted and don't come in his way.
 * Sam is greatly influenced by his memories from hell, he faints and Dean brings him into the panic room. There is a inner conflict inside Sam's mind.
 * Castiel betrays Crowley, he has no longer any intention to share the souls from purgatory with him.
 * Crowley talks to Raphael and they make a new deal, he grants Crowley immunity to Castiels smiting touch.
 * Crowley and Raphael return to Castiel, forcing him to flee. However, he gives them a false component to ensure they won't be able to open the portal to purgatory, consequently their ritual fails.
 * Castiel performs the ritual, he absorbs 30 - 40 millions of purgatory souls, this makes him nigh-omnipotent.
 * Dean and Bobby arrives, Castiel tells them, that he tricked them all, he already performed the ritual. A shocked Crowles flees, Castiel hinders Raphael from fleeing and destroys him with a snap of his fingers. Meanwhile, Sam who is greatly affected by his horrific memories arrives, he stabs Castiel with an angel sword, but it has no effect at all since Castiel is no longer an angel.
 * Castiel declares himself as the new God.

2012

 * Castiel effortlessly kills countless angels who followed Raphael, destroys the Madison Square Garden, heals some people, punishes a hypocrite priest and makes Crowley a new deal.
 * Sam suffers from his cage time memories.
 * Castiel starts to become unstable.
 * Sam, Dean and Bobby summon Death to kill Castiel, but he senses it and frees Death from the binding spell. He explains that Castiel's instability is based on the Leviathans, a race of ancient beasts and among God's first creations.
 * Castiel, with the help of Bobby, Dean and Sam, returns the souls to Purgatory, regenerating his vessel. However, the Leviathans held on and gain control over him, killing him from the inside.
 * The Leviathans leave Jimmy Novak after he began melting from their combined power and spread out to possess other humans, leaving only Castiel's trenchcoat, which is taken by Dean.
 * Bobby is killed by Dick Roman, but not before he passed on his message to Sam and Dean.
 * Dean kills the Leviathan Chief who possessed Dick Roman and he alongside Castiel are transported to Purgatory with Dick's soul. Crowley and his demon army destroy the remaining Leviathans and he seizes the prophet Kevin Tran. Dean later escapes from Purgatory with the assistance of a vampire named Benny. Benny asks Dean to save his soul and resurrect him, to which Dean eventually agrees. Castiel is presumed to have died in Purgatory but then an angel named Naomi summons Castiel to Heaven and announces that she and numerous other high-ranking angels saved him. Castiel is doubtful about whether to trust Naomi but agrees to keep in contact with her and his superiors from time to time. Kevin Tran has escaped from Crowley and translated the Demon Tablet, giving the Winchester the ability to close the Gates of Hell forever. if they complete the Trials of God.

2013

 * With Meg's assistance the Winchesters retrieve the Angel Tablet from Lucifer's Crypts, but Castiel goes AWOL with the Tablet after defying Naomi's orders. Crowley recaptures Kevin, and Naomi eventually gets her hands on Castiel again. Metatron is discovered hiding out on Earth, and he rescues Kevin. He manipulates the Winchesters and Castiel, kills Naomi, and banishes every angel from Heaven, with the now fallen angels falling to Earth.

2014

 * Angels are warring on Earth. Metatron reappears and sends angels after Castiel to kill him.
 * Sam gets possessed by Gadreel, but he expels him and saves himself from eternal possession.
 * Dean gets the Mark of Cain.
 * Dean kills Abaddon.
 * Sam tries to save Dean.
 * Metatron announces his hegemonistic plans.
 * Dean tracks down Metatron.
 * Metatron overpowers, fights and kills Dean.
 * Castel imprisons Metatron and turns angels against Metatron after he learns Dean is dead.
 * Crowley orders Dean to awake.
 * Dean becomes a demon.
 * Crowley and Dean live a life together, trying to convert Hell. However Dean wants to kill people of his own accord. He fights Sam, who eventually binds him. Sam cures Dean with Castiel's help and Dean is now human again, but still suffering the Mark's effects.
 * Rowena betrays Crowley by leaving him to apparently die at the hands of a brainwashed Castiel. Dean learns through Death that there was a primordial being named the Darkness which would eat the world if released and by destroying his Mark he would release the Darkness. However, Dean knows killing Death is the only way to free himself from the Mark, so he kills Death by stabbing his scythe into him. Death crumbles into ash, and all seems safe as the Mark fades from Dean, rendering him fully human again. However, not all is well - With no one to fight it, the Darkness triumphantly bursts out of its cell and forms a gigantic dark cloud of evil, engulfing everything in its path - including the Winchesters...

Split Timeline: 2014 (The Apocalypse)

 * It is now three years into the Apocalypse which had inadvertently been started by Sam when he accidentally released Lucifer. By now Earth is a wreck, humanity is almost extinct, and many millions of humans are infected with the Croatoan Virus. Those uninfected, including a human Castiel, remain isolated and in hiding. Dean is flung into this future by the angel Zachariah so Dean can witness what happens when he refuses to allow the Archangel Michael to use him to defeat Lucifer. As a result, Dean is tormented when he witnesses his future self being murdered - By none other than Lucifer, who has possessed Dean's own brother Sam.

[Note: Fortunately this Apocalypse was averted when Dean destroyed the Croatoan Virus and Sam fought back against Lucifer and trapped him once again in the Cage ]

References