I've posted several versions of this on other forums, but I was curious to see what the reaction would be here.
This is a chronology of events as they occur in the Final timeline as of the end of BTTF3 (i.e. the 'Eastwood' timeline). Thus it does not include events which took place in alternate timelines that were erased (such as 1985-A, or the 2015 in which Marty is fired) during the course of the movies.
Please note that this is the chronology from the POV of the timeline itself...and NOT from Marty or Doc's POV...since both Marty and Doc, being time traveler's, have traveled through various timelines, and thus have memories from different realities. I have specified which timeline time traveler's have arrived from, even if those timelines were erased.
Also, to fill in some of the gaps, I've used some of my own theories regarding alternate sequences of events...please feel free to debunk them if you like.
-January 1st: Doc arrives from 1955 (of the 'revised' Lone Pine timeline) and crash-lands the Delorean. He discovers that the flying circuits have been destroyed and the time circuits damaged.
-Doc sets up as a blacksmith and attempts to repair the Delorean but this proves unsuccessful. At some point, he incurs the wrath of Bufford Tannen.
-September 1st: Doc buries the Delorean in the Delgado Mine and writes the letter to Marty, sending it to Western Union.
-September 2nd: Marty arrives from 1955 (of the Shonash timeline).
-September 3rd: Marty is reunited with Doc and warns him of his impending death at Tannen's hands, showing him the picture of the tombstone.
-September 4th: Doc rescues Clara from falling into the ravine and they fall in love.
-September 5th: At the Town Festival, Doc and Marty witness the inaugration of the Clock Tower and take a picture next to it. Marty saves Doc from being shot by Bufford.
-September 7th: Marty defeats Bufford and travels back to the future. Doc is stuck in the past, with Clara.
-Shonash Ravine is renamed Eastwood Ravine, in 'Clint Eastwood's' memory.
1885 - c.1895
-Doc and Clara get married at some point. They have two children, Jules and Verne.
-Doc works on a second time machine, intent on escaping the past, lest his family endanger the space-time continuum by remaining in the past where NONE of them are supposed to exist.
-Finally, in around 1895 (or possibly a little later), Doc completes the second flux capacitor (which runs on steam) and the second time machine-a train-and with Clara and the kids, travels to 2015.
-November 5th: Early in the morning, Marty arrives from 1955 (of the Twin Pines timeline). He prevents the first meeting of his parents. At some point, Doc falls from his toilet seat and has the vision for the flux capacitor. Marty meets Doc and convinces him he's from the future.
-November 7th: Marty attempts to get George and Lorraine together, impersonating Darth Vader that night.
-November 8th: Marty causes Biff to crash into the manure truck.
-November 12th: Early in the morning, Marty and Doc arrive from 1985-A. Later, Old Biff arrives from 2015 (of the Lone Pine timeline). He gives his younger self the Almanac and leaves. The 'earlier' Marty tries to give Doc a letter warning him of his impending death in 1985. That night, at the Enchantment Under the Sea dance, the 'earlier' Marty tries to get his parents together while the 'later' Marty tries to get the Almanac back from Biff. Biff is knocked out by George and Marty steals the Almanac from him. George and Lorraine kiss and fall in love. Biff gets the Almanac back from Marty. Marty manages to get it back and causes Biff to crash into another manure truck. Doc is struck by lightning and sent back to 1885. The Western Union man delivers Doc's 70 year old letter to Marty. Finally, '55 Doc sends the earlier Marty back to the future, using the lightining bolt which strikes the Clock Tower. The later Marty then surprises Doc, causing him to faint. Marty brings Doc home.
-November 13th: Marty informs Doc of his older self being trapped in the past.
-November 14th: Marty and Doc uncover the Delorean buried in the mine by the older Doc. Marty decides to go to the library to find out what became of Doc. He finds the picture of himself and Doc, taken on the night of the Clock Tower inaugration. From this, he surmises that he was meant to go back to 1885 and rescue Doc.
-November 16th: Marty takes the repaired Delorean and goes back to 1885. He is 'cancelled out' and replaced by the version of Marty from the Shonash timeline (who saw the tombstone).
-Doc spends thirty years developing the time machine, although this time he may have a bit of headstart, having actually repaired the time circuit control microchip before even inventing it!
-Doc meets the younger Marty and befriends him, knowing it was meant to happen. Marty of course if unaware that Doc has already met 'him'.
-At some point, Doc reads the letter warning him about his death on the night of the first temporal experiment.
-October 25th: Doc invites Marty to Lone Pine Mall for his experiment. Marty receives a flyer about the Clock Tower.
-October 26th: Early in the morning, Marty witnesses Doc carry out 'temporal experiment no. 1' on the Delorean (unknown to him, Doc has already worked on the Delorean TWICE). At around 1: 24 am, a week older Marty arrives at the Town Square and rushes to the mall. The Libyans arrive and shoot Doc, and the younger Marty escapes in the Delorean, being accidently sent back to 1955 (whereupon, he is 'cancelled out' and replaced by the original Twin Pines Marty). The Marty who has returned discovers that Doc is alive, and was wearing a bulletproof vest. Doc then takes the Delorean and travels to 2015.
In the morning, Marty is surprised by the 'new improved' version of his family, and the fact that he has a truck. Doc arrives from 2015 (of the Lone Pine timeline) and takes Marty and Jennifer into the future. Biff watches the Delorean disappear...he may remember seeing a similar vehicle back in 1955 when 'Calvin Klien' stole the Almanac from him.
-October 27th: At around 2:42 am, Jennifer and Einstien 'fade into' this timeline...Jennifer on her porch and Einstien in Doc's lab. At some point early in the day, Doc arrives from 2015 (of the Eastwood timeline) using the time train, along with Clara and the kids, and he picks up Einstien and travels a little forward in time to meet Marty. At 11, Marty arrives from 1885. He meets Jennifer and refuses to race Needles. Doc arrives in the time train and meets Marty, giving him the second copy of the picture they took at the Clock Tower inaugration in 1885. Doc then leaves for an unknown time.
-Doc arrives from 1885 in the time train, with his family. He may be surprised and pleased to discover that this is a different future timeline he has arrives in, owing to Marty choosing not to race Needles thirty years ago. He may meet the (hopefully) more successful Marty and learn of the Delorean's destruction. Doc gets the train hover-converted and leaves for 1985, to first pick up Einstein and then meet the younger Marty.
I might make another timeline including the events of the games in future...