These are the on-island events only as we currenly understand them. Clearly there are a lot of grey areas so feel free to amend, add, or clarify anything you wish as it is admittedly a working document. I don't think there is much subtracting to do, but your thoughts are welcome.
I would like to note that the period from 77-92 is the most vague period in the whole timeline, with the exception of what happened prior to 54. What are the chances that instead of the Dharma losties moving back to 2008, we see the Hydra losties come back to Dharma time? Locke does know where the wheel is. It's just that with events such as Ben meeting Jacob and expanding his relationship with Richard, Widmore being removed, The purge, and other events during these times, I'm not sure we fit them all into flashbacks alone. Plus I'm not really sure what else there is left to do in 2008. It seems the bulk of the story now lies in the 1980's.
Here we go,,,
?? – Longer ago, the statue, temple etc. are built by an ancient culture
?? - Long ago, the statue is in tact, the well has not been dug. I suspect the statue was toppled due to the volcano eruption, which Olivia described also as having happened a long time ago. Is the eruption significant?
1845 to 1881 – Black Rock Crashes with Magnus Hanso as it’s Captain.
40 to 52 – It may be assumed that with Alvar Hanso funding the Dharma Initiative later that during these dates he also supported funding or gave information that allowed the US Military to find the island.
53 to 63 – Jack’s predictions place Adam and Eve has having died between these times, largely before Dharma’s arrival, and well before we know the losties were part of Dharma
54 – The US military discovers the island and begins to implement nuclear tests. A picture taken then provides proof of the island’s existence. Richard meets Locke and presumably buries Jughead. Richard appears to be aware of Jacob and the leader of the Hostiles. Widmore is 17. So is Mrs. Hawking.
55 to 60 – A “Clever Fellow” uses the proof of the island to get funding from Alvar Hanso to establish the Dharma Initiative to find the island. I’m really just taking a stab, but it would seem to make sense that since Horace is a mathematician and seems to run Dharma’s island activities, he was in fact the clever fellow.
61 - Horace finds baby Ben and was with Olivia.
62 to 69 – Dharma finds the island and Alvar continues to fund further research. Early Dharma projects are set up and the Island is settled by them. These include building the above ground facilities (Barracks, Sonic Fence, Flame, and the docks.)
70 to 76 – The larger Dharma projects begin (Swan, Pearl, Hydra, Tempest, and Looking Glass)(Note that given the connection of the losties to the numbers and musical code in the looking glass, that these two stations may not have been built until after 76)
70 - Penny is likely born here, given she is a little over 30 in 2003. Widmore was certainly on the island. Was Penny? Charlotte is likely born around this time as well.
72 - Horace brought an 11 year Ben to the island, is still with Olivia and has short hair. If in fact Olivia and Horace were husband and wife and not brother and sister, Olivia must disappear at this point. It is probable the cabin is built here as Horace seeks solitude away from the Dharma Initiative.
74 - Horace now has long hair, and Olivia is nowhere to be found. Horace now has long hair. My take is that Olivia's disappearance must be related to the hostiles although perhaps she simply left the island for other reasons. If she is Horace’s sister, she may also be around but yet to be seen. Daniel sees a young Charlotte. Sawyer meets Richard, who seems to still be the Hostile’s leader. Where is Widmore?
75 - Ben meets Richard. It had been a couple of birthdays I believe before Ben got upset with his dad and ran out into the woods. It may have been another year later or so. Interesting that Richard now looks like a bum. What happened?
76 – Pierre Chang father’s a son. Who is it? (Miles?)
77 – The Orchid begins construction with Daniels help, another likely time for "the incident". It is unlikely construction began before this time as no significant events related to it occurred during the 3 years Sawyer and co. have been a part of Dharma. Ben has been around the losties for 3 years at this point, long enough for him to remember them well despite any name changes. He surely recognized Juliet, and this explains why he may have been so fascinated with her. Horace has a baby with Amy. Who is the baby? (Ethan, Desmond?) This is the only known baby to be conceived and born on the island, if in fact Amy never left. Dharma losties reunite with Kate, Jack & Hurley.
77 to 92 – We are completely unsure of the circumstances surrounding these events, but it seems clear that during this time Ben’s relationship with Richard expands, Ben meets Jacob, and at some point even as late as 2000, Jacob is imprisoned in the cabin, though likely earlier than that. It is possible “the incident” has not happened yet and takes place during this time. The Dharma losties have either moved in time again to the past or present at the start of this period, or live through this entire period, possibly witnessing Widmore’s removal or even dying in the purge.
84 to 92 - Widmore leaves the island. If he lead the Hostiles for 30 years and took over in 54 then 84 is the soonest he left and certainly 91 during the purge would have been the latest. If he leaves near 84, this could be related to "the incident"
88 - Rousseau's team arrives. Ben has not yet committed the Purge but somehow claims her baby Alex.
92 - The Purge, Ben seems to claim leadership of the Hostiles, who takeover all previous Dharma facilities
01 – Desmond crashes and is brought to the Swan. Juliet brought to the island. Yemi Crashes
02 – Henry Gale crashes
04 - Crash of 815, birth of Aaron, Jacob asks Locke for help, Swan fail safe activated
05 – Rescue of the Oceanic 6, Ben leaves
08 – Death of Locke, Crash of 316, Resurrection of Locke, Return of Ben Theory by Locke4God
I would like to note that the period from 77-92 is the most vague period in the whole timeline, with the exception of what happened prior to 54. What are the chances that instead of the Dharma losties moving back to 2008, we see the Hydra losties come back to Dharma time? Locke does know where the wheel is. It's just that with events such as Ben meeting Jacob and expanding his relationship with Richard, Widmore being removed, The purge, and other events during these times, I'm not sure we fit them all into flashbacks alone. Plus I'm not really sure what else there is left to do in 2008. It seems the bulk of the story now lies in the 1980's.
Here we go,,,
?? – Longer ago, the statue, temple etc. are built by an ancient culture
?? - Long ago, the statue is in tact, the well has not been dug. I suspect the statue was toppled due to the volcano eruption, which Olivia described also as having happened a long time ago. Is the eruption significant?
1845 to 1881 – Black Rock Crashes with Magnus Hanso as it’s Captain.
40 to 52 – It may be assumed that with Alvar Hanso funding the Dharma Initiative later that during these dates he also supported funding or gave information that allowed the US Military to find the island.
53 to 63 – Jack’s predictions place Adam and Eve has having died between these times, largely before Dharma’s arrival, and well before we know the losties were part of Dharma
54 – The US military discovers the island and begins to implement nuclear tests. A picture taken then provides proof of the island’s existence. Richard meets Locke and presumably buries Jughead. Richard appears to be aware of Jacob and the leader of the Hostiles. Widmore is 17. So is Mrs. Hawking.
55 to 60 – A “Clever Fellow” uses the proof of the island to get funding from Alvar Hanso to establish the Dharma Initiative to find the island. I’m really just taking a stab, but it would seem to make sense that since Horace is a mathematician and seems to run Dharma’s island activities, he was in fact the clever fellow.
61 - Horace finds baby Ben and was with Olivia.
62 to 69 – Dharma finds the island and Alvar continues to fund further research. Early Dharma projects are set up and the Island is settled by them. These include building the above ground facilities (Barracks, Sonic Fence, Flame, and the docks.)
70 to 76 – The larger Dharma projects begin (Swan, Pearl, Hydra, Tempest, and Looking Glass)(Note that given the connection of the losties to the numbers and musical code in the looking glass, that these two stations may not have been built until after 76)
70 - Penny is likely born here, given she is a little over 30 in 2003. Widmore was certainly on the island. Was Penny? Charlotte is likely born around this time as well.
72 - Horace brought an 11 year Ben to the island, is still with Olivia and has short hair. If in fact Olivia and Horace were husband and wife and not brother and sister, Olivia must disappear at this point. It is probable the cabin is built here as Horace seeks solitude away from the Dharma Initiative.
74 - Horace now has long hair, and Olivia is nowhere to be found. Horace now has long hair. My take is that Olivia's disappearance must be related to the hostiles although perhaps she simply left the island for other reasons. If she is Horace’s sister, she may also be around but yet to be seen. Daniel sees a young Charlotte. Sawyer meets Richard, who seems to still be the Hostile’s leader. Where is Widmore?
75 - Ben meets Richard. It had been a couple of birthdays I believe before Ben got upset with his dad and ran out into the woods. It may have been another year later or so. Interesting that Richard now looks like a bum. What happened?
76 – Pierre Chang father’s a son. Who is it? (Miles?)
77 – The Orchid begins construction with Daniels help, another likely time for "the incident". It is unlikely construction began before this time as no significant events related to it occurred during the 3 years Sawyer and co. have been a part of Dharma. Ben has been around the losties for 3 years at this point, long enough for him to remember them well despite any name changes. He surely recognized Juliet, and this explains why he may have been so fascinated with her. Horace has a baby with Amy. Who is the baby? (Ethan, Desmond?) This is the only known baby to be conceived and born on the island, if in fact Amy never left. Dharma losties reunite with Kate, Jack & Hurley.
77 to 92 – We are completely unsure of the circumstances surrounding these events, but it seems clear that during this time Ben’s relationship with Richard expands, Ben meets Jacob, and at some point even as late as 2000, Jacob is imprisoned in the cabin, though likely earlier than that. It is possible “the incident” has not happened yet and takes place during this time. The Dharma losties have either moved in time again to the past or present at the start of this period, or live through this entire period, possibly witnessing Widmore’s removal or even dying in the purge.
84 to 92 - Widmore leaves the island. If he lead the Hostiles for 30 years and took over in 54 then 84 is the soonest he left and certainly 91 during the purge would have been the latest. If he leaves near 84, this could be related to "the incident"
88 - Rousseau's team arrives. Ben has not yet committed the Purge but somehow claims her baby Alex.
92 - The Purge, Ben seems to claim leadership of the Hostiles, who takeover all previous Dharma facilities
01 – Desmond crashes and is brought to the Swan. Juliet brought to the island. Yemi Crashes
02 – Henry Gale crashes
04 - Crash of 815, birth of Aaron, Jacob asks Locke for help, Swan fail safe activated
05 – Rescue of the Oceanic 6, Ben leaves
08 – Death of Locke, Crash of 316, Resurrection of Locke, Return of Ben Theory by Locke4God