Lost/Timeline 4

This page is a timeline of the events that occurred during season four of Lost. Since there are very few on-screen indications of time and date of the occurrence of events, much of this page is open to interpretation and additional conjectures. Currently, this article is compiled with information from the episodes themselves and interviews with producers and writers of the show as well as the text commentary on the ABC repeats of the episodes.

Lost Timeline Articles
Pre-Crash
On Island
Season One Days 1–45	| Season Two | Days 45–67	| Season Three | Days 68–91	| Season Four | Days 91–100	| Season Five | Days 100–?
Off Island
2005–2007 | Season Five

Season Four

On Island	Real Date	Event	Source
Day 91	12/21/2004	Desmond returned to the beach camp and informed the few survivors there about Naomi not being who she claimed to be, and of Charlie's death. The group decided to warn Jack in person instead of over the walkie talkie as Sayid believed the people on the freighter would be monitoring their communications. Hurley got lost along the way in the night, and found Jacob's cabin. He became frightened and ran away, running into Locke. At the radio transmitter, Jack and Kate discovered that Naomi wasn't dead but had crawled away. Kate tracked her down but was ambushed by her. Naomi contacted her freighter and covered for the survivors, claiming her injuries were sustained when she parachuted onto the island. She died from her wound. All the survivors met up at the nose section of Oceanic 815. Jack took Locke's gun and tried to shoot him, but the gun was empty. Charlie's warning was delivered and the survivors split up into two groups: those who believed Charlie went with Locke to safety while the rest stayed with Jack and the hope of rescue. After Locke's group left, a helicopter appeared overhead but a man parachuted out of it and was met by Jack and Kate.	The Beginning of the End
Day 92	12/22/2004	Jack and Kate meet Daniel Faraday, the parachutist, and a second man from the helicopter, Miles Straume. Miles demands to be taken to Naomi's body as she gave out a code phrase informing the freighter she was under duress. Alone with Naomi's body, Miles confirms Kate's story that they were not the ones who killed her. Sayid and Juliet catch up with the group and they all find the helicopter pilot, Frank Lapidus, who safely landed the helicopter. Locke's group comes across the fourth freighter person, Charlotte Lewis, and take her with them to the barracks. He attaches her GPS transponder to Vincent's collar and Jack's group track down the transponder, realizing Locke is holding Charlotte. Both groups discover the freighter's purpose is to find Ben. Ben knows this and has detailed information of the freighter as he has a man on it. Sayid, Kate and Miles go to the barracks to get Charlotte. There they are ambushed and disarmed. Sayid exchanges Miles for Charlotte and leaves; Kate decides to stay. Frank leaves for the freighter in the helicopter, taking Sayid, Desmond and Naomi's body. Daniel performs an experiment revealing a time difference of 31 minutes and 18 seconds when an object was sent to the island.	Confirmed Dead The Economist
Day 93	12/23/2004	Jack and Juliet return to the beach camp. They attempt to contact the freighter, but get no response. Eventually they turn to Charlotte who contacts an emergency channel and they learn the helicopter never arrived at the freighter despite it leaving the day before. At the barracks, Kate frees Miles so he can talk to Ben in exchange for everything Miles knows about Kate. Miles demands $3.2 million in exchange for telling his employers that Ben is dead. Kate learns the people on the freighter know she's a fugitive. Her actions result in Locke banishing her from their group.	Eggtown
Day 94	12/24/2004	At the barracks, Sawyer and Kate have an argument. Kate believes she isn't pregnant, but isn't as enthusiastic about the news as Sawyer is. She leaves for the beach camp. Sayid, Desmond and Frank arrive at the freighter, but Desmond's consciousness jumps between the present and his past in 1996, causing him to be very confused. Sayid gets a phone from Frank to call Jack on the beach, letting him know what's going on. In the freighter's sickbay, Desmond meets George Minkowski, who is also experiencing the same thing Desmond is going through. Sayid gets Daniel on the phone, who manages to help Desmond find a way to get better. Desmonds realises he needs to make contact with Penny. George takes them to the communications room, where all the equiptment has been sabotaged. Sayid manages to connect a phone to a battery so Desmond can call Penny. He tells her about the boat and the island and she informs him that she has been looking for him for the past 3 years. She knows about the island and promises Desmond that she'll keep looking until she finds him. Under the cover of darkness, Daniel and Charlotte slip out of camp without telling anyone. Juliet and Jack head after them and Juliet runs into an old acquaintance, Harper, who tells her Daniel and Charlotte are heading to the Tempest to kill everyone on the island.	Eggtown The Constant The Other Woman
Day 95	12/25/2004	Daniel and Charlotte run into Kate, who's returning from the barracks, and Charlotte knocks her unconscious. Juliet and Jack find Kate, but Juliet continues on without them. At the Tempest, Juliet learns the two are trying to render the toxic gases inert to prevent Ben from using it against them. Daniel succeeds in securing the station. At the barracks, Ben is freed in exchange for his knowledge of who the freighter belongs to and the identity of his spy. Locke learns the freighter belongs to Charles Widmore who wants to exploit the island. On the freighter Frank meets with Sayid and Desmond in the sickbay. At night on the beach Sun and Jin discuss the name of their baby.	The Other Woman Ji Yeon
Day 96	12/26/2004	Kate and Jack return to the beach. Sun confronts Daniel and then decides to go to Locke's camp. Juliet confronts Sun about leaving and in frustration tells Jin about Sun's affair. Bernard and Jin go fishing and have a heart to heart. At night they return and Jin reconciles with Sun. Sun says she now wants to stay on the beach and confirms the baby is his. On the freighter Sayid and Desmond are slipped a not warning them to not trust the captain. They hear someone banging pipes together. The doctor frees them from the sickbay and takes them up on the deck to see the captain. When they get up on deck they see Regina wrapped in chain jump overboard. The captain oders everyone to ignore her and introduces himself. He explains who he's working for and shows them the flight recorder for Oceanic Flight 815. He claims Ben is the one who faked the wreckage. The doctor escorts the two to their cabin below. There is a blood splatter in the cabin so the doctor orders Kevin Johnson to clean it up. When Johnson gets close Sayid realizes he's actually Michael. Late at night Sayid and Desmond are woken by an alarm and rush up to the deck where they witness the captain beating two men for attempting to desert. Sayid asks Michael what he's doing there and he says he's there to die. At the barracks Locke has a meeting and brings Miles. He has Ben and Miles share what he'd already learned from them. Including that Ben's spy on the boat is Michael. As Locke is bringing Miles back to the boat house Sawyer confronts him. Ben convinces Alex, Karl and Rousseau to go to the temple.	Ji Yeon Meet Kevin Johnson
Day 97*	12/27/2004	Early in the morning on the freighter Sayid learns that Kevin/Michael is down in the engine room. Sayid and Desmond head down there and get Michael alone. They demand to know how Michael got on the boat and he tells them. Sayid drags Michael to the captains cabin and reveals who he really is and that he's the saboteur. Alex, Danielle and Karl are traveling through the woods when Karl is suddenly shot. Danielle pulls Alex behind a tree and says they're going to try to make a run for it. They attempt to run away but Danielle is shot. Alex then surrenders and reveals she is Ben's daughter. The mercenaries from the freighter reveal themselves and take her captive. They take her to the sonic fence and make her enter the deactivation code. On the beach Jack starts to be visibly sick. The body of the freighter's doctor washes up on shore. They come up with a plan to send a message to the freighter. At night Daniel sends out a Morse code message asking what happened to the doctor. Daniel lies about the response and Bernard calls him out. Jack confronts him and he admits they don't plan on saving them. At the barracks Hurley, Sawyer and Locke are playing Risk when the phone rings. Locke answers it and hears a cryptic repeating code. He and Sawyer go to Ben to find out what the code means. Ben tells them they have to fortify themselves in his old house as the code means someone pushed the panic button on the perimeter fence. Sawyer goes to help Claire. Locke and Ben start to baricade themselves in the house. Hurley is already there with Aaron. While Sawyer is trying to find Claire three other survivors are killed and Claire's house is blown up with a rocket. Sawyer finds Claire in the rubble of her house and carries her to Ben's house and through a window Hurley broke open for them. Sawyer lets Miles in after he rings the doorbell. Miles gives Ben a radio but he refuses to use it until Miles tells him they have his daughter. Ben talks to Keamy and tells him how much he knows. Alex is brought out and when Ben reveals that she isn't really his daughter and refuses to cooperate so Keamy shoots her in the head. The mercenaries disappear into the jungle but Locke realizes they're just waiting for nightfall. Ben heads to a hidden room in the house and reveals a stone doorway with strange inscriptions on it. He opens that door and heads further inside. Ben eventually comes out of the room and goes upstairs. The building begins to shake and they see the smoke monster shoot by. Ben orders them outside and they see the monster attack the mercenaries. Ben tells them to go and says goodbye to Alex's body. In the jungle Ben takes Locke and Hurley to find Jacob while Sawyer, Claire, Aaron and Miles head back to the beach.	Meet Kevin Johnson The Shape of Things to Come
Day 98*	12/28/2004	Juliet wakes Jack up while other people on the beach are arguing with Daniel and Charlotte. He tries to mediate but collapes which leads Juliet to diagnose him with appendicitis. Sun, Jin, Daniel and Charlotte head to the Staff for supplies to help Jack. The others on the beach start to build a sterile area for the surgery. At night the group from the Staff returns and the surgery begins. Jack tries to stay awake but the pain becomes to much and Juliet insists he be chloroformed. After the surgery Bernard tells Kate she can go back in and see Jack. Juliet reveals Jack kissed her a few days ago. Kate leaves and then Juliet tells Jack she knows he's awake. In the jungle Sawyer, Claire, Aaron and Miles continue their trek back to the beach. Miles senses Danielle and Karl's deaths and finds their bodies. Sawyer later gives Miles a "restraining order" to stay away from Claire. They continue on and run into Lapidus who tells them to hide. The mercenaries come along and Lapidus hurries them onto the chopper to protect the four in hiding. The four set-up camp and fall asleep. Claire wakes up and finds Aaron missing and then sees her father holding him. Claire walks off into the jungle. Locke, Ben and Hurley realize no one knows where they're going and set up camp for the night.	Something Nice Back Home Cabin Fever
Day 99*	12/29/2004	Locke has a dream where he sees Horace chopping down trees. He wakes up and tells Ben and Hurley he knows where they have to go now. They head to the pit of Dharma corpses where Locke searches for Horace's body. He retrieves a map to the cabin Horace was building and they set off to find it. They reach the cabin at night and Locke heads inside alone. He sees Claire and Christian who tells him to move the island. Outside Hurley shares a candy bar with Ben. Locke exits and tells them what Christian told him. On the freighter the helicopter returns and the wounded are unloaded. Keamy attacks the captain who tells him Michael is who he really wants. He goes down to Michael's cabin and interrogates him then tries to shoot him but the gun doesn't work. Keamy retrieves the secondary protocal from a safe. The captain goes up on deck and tells Sayid and Desmond to hide. Sayid refuses and instead asks to take the dinghy back towards the island to ferry survivors. As the sun is setting Lapidus goes below and frees Michael and takes him to the engine room. Sayid prepares to leave but Desmond refuses to go so Sayid heads back alone. With the sun down the mercenaries load the helicopter up with more weapons. Lapidus refuses to take them back so Keamy slits the doctor's throat and throws his body overboard and threatens to kill more if he doesn't take them. The captain then confronts Keamy with his now fixed gun but Keamy shoots him while his head his turned. Lapidus agrees to pilot the helicopter but secretly activates his satellite phone before taking off. On the beach at night Juliet warns Jack that if he isn't careful he'll tear his stiches. The helicopter flies overhead and drops a backpack. Inside Jack finds a satellite phone that is actively tracking the helicopter. They argue over what to do with it. Daniel makes a call but only hears Keamy order Lapidus to land the helicopter. Jack decides to head to the helicopter with Kate. Daniel tells Charlotte that they need to get off the island immediately.	Cabin Fever There's No Place Like Home (1)
Day 100	12/30/2004	Jack and Kate are continuing their trek to the helicopter when they run into Miles and Sawyer. Sawyer tells them they lost Claire. After exchanging stories Jack and Sawyer head onto the helicopter while Kate, Miles and Aaron go back towards the beach. They eventually make it to the helicopter and meet Lapidus. They realize that the mercenaries will kill Hurley if they don't try to save him so Jack and Sawyer head for the Orchid. Sayid arrives on the beach and prepares to go after Jack and Kate when Kate returns with Aaron and Miles. Kate and Sayid go after Jack. Daniel takes a group of six survivors including Sun, Jin and Aaron in the dinghy back towards the freighter. Kate attempts to track Jack and Sawyer but eventually realizes the person they're tracking doubled back on them. Kate and Sayid order whoever it is to show themselves and Richard comes out of the trees followed by a large group of gun toting Others. Faraday and his group arrive at the freighter off-load the survivors and Faraday returns to the island. Michael fixes the engine and Desmond has Hendrick take the freighter in towards the island. Sun and Michael have a conversation about how Michael got off the island. Desmond runs up on deck and then shows them all a massive pile of rigged to explode C-4. In the jungle Ben, Locke and Hurley continue towards the Orchid. Ben stops and signals an Other with a mirror. Hurley questions Ben about moving the island. The three arrive at the Orchid but Keamy and his team beat them there. Ben surrenders himself to Keamy. Jack and Sawyer meet Hurley and Locke at the Orchid . Keamy and his men bring Ben back towards the helicopter where Kate, Sayid and the Others ambush them. Keamy and and his team are all disabled or killed and Kate and Sayid head to the helicopter while Ben goes back to the Orchid. Ben and Lock enter the Orchid while Jack, Sawyer and Hurley head to the helicopter. Frank, Sayid, Jack, Kate, Hurley and Sawyer take off towards the freighter. The helicopter is leaking fuel so Sawyer jumps out so the others can make it to the freighter. On the beach Miles, Charlotte and Juliet refuse to leave and Daniel heads out with a second group of survivors on the dinghy. Ben loads the Orchid's vault with metal in order to enter the inner chamber when Keamy arrives and taunts him into attacking and killing him which triggers the bomb on the freighter to activate. On the freighter they manage to temporarily stop the bomb from going off by freezing it. The helicopter lands and they fix the leak and Desmond, Sun and Aaron board. Jin leaves the bomb and runs to the helicopter. Michael runs out of liquid nitrogen and the bomb explodes before Jin makes it to the helicopter. The helicopter takes off and the freighter explodes. Sawyer swims back to the island and Sawyer and Juliet watch the freighter explode. Ben and Locke split up. Locke joins the others outside and Ben enters the inner chamber of the Orchid. Ben turns the wheel to move the island and is transported to Tunisia in the future.	There's No Place Like Home (1) There's No Place Like Home (2)

*Some strange time travel like things occur between the freighter and the island on Days 97-99 and several characters appear to be two places at once. The mercenaries are on the boat when they receive Faraday's message about the doctor. Even though they were on the island fighting the smoke monster when he sent it. Also the doctor's body seemed to wash up on shore two days before it was thrown overboard.

Lost Timeline Articles
Pre-Crash
On Island
Season One Days 1–45	| Season Two | Days 45–67	| Season Three | Days 68–91	| Season Four | Days 91–100	| Season Five | Days 100–?
Off Island
2005–2007 | Season Five