I have long had gripes with how, in my opinion, decompressed and overextended the Old Republic era in Legends is. The idea of a singular Old Republic publishing era is not ideal: not counting the various periods established in Essential Chronologies, hyperspace articles, and one-off mentions, I think that there are more like 4 distinct eras before 1000BBY, but we’ll touch on that later. Let’s look at the G-canon sources first, or whatever is closest to them: Terry Brooks’ novelization of the Phantom Menace places the founding of the Sith Order at “nearly two thousand years” before 32BBY. A Jedi Knight, denied by the council the right to study the Dark Side, left the Jedi and was soon followed by others. No scale is given before their ensuing war and the demise of their leader and then each other. Then Bane reforms the Sith shortly thereafter, in 1000BBY. TCW production notes reference an era when Coruscant was Sith-dominated, and an early draft for A New Hope gives us a rogue padawan named the Darklighter (what a Prometheal name!) teaching a race of space pirates called the Sith how to use the Force. I don't dislike Abel G Pena's Darth Ruin, but I am skeptical that he will fit into the timeline as George Lucas's unnamed Darklighter, or even be the founder of the New Sith in a tangible way. George's Darklighter is equally applicable to any Jedi that had fell in this era: Xendor, Ajunta Pall, Freedon Nadd, Exar Kun, Revan, Phanius... it all depends on how the restructuring occurs. Tom Veitch and KJA first introduced us to elements of the Old Republic era in Dark Empire and the JAT until writing Tales of the Jedi. I can’t find a quote, but I’ve heard that when Veitch was pitching Tales of the Jedi, he kept upping the number from 1000BBY until getting a green light for 5000BBY as the Golden Age of the Sith. TOTJ gives us a speculative timeline: 10 years of a Great Hyperspace War, followed by the destruction of the Sith Empire save for several pockets and safe havens (the nature and number of which are not entirely understood.) Exar Kun reinvigorates some of the Sith Remnants in 4000BBY and his war lasts until 3996BBY. We also get our first references to the Great Schism/Hundred Year Darkness, albeit as separate events (and it is the former described as birthing the Sith Order.) Naga Sadow is stated to be the first Sith Lord to reestablish contact with the Republic in “thousands” of years. One thing I considered doing was finding an “anchor year” to base all of the timeline around and merely shift the numbers forward, but I found that this doesn’t work. If one tried to reflexively apply Veitch’s timeline to Lucas’s we’d immediately run into several problems. Assuming that 2032BBY is the start of the Hundred Year Darkness (when the Sith originate) 1000 years later is the time of Naga Sadow, and Sadow certainly didn’t live 1000 years from Revenge of the Sith. I tried looking into when the Hundred Year Darkness was established to be between 7000-6900BBY. I could not find a source. I assume this timespan was invented to justify Sadow’s reference to “thousands of years” having passed between contact with the Republic. One possibility I looked at was compressing the time between Naga Sadow and Exar Kun. Sadow lived for maybe 6-700 years from pre-5000BBY until death in 4400BBY when he trained Freedon Nadd in the ways of the Sith. The time Sadow spent in suspended animation could be compressed to some degree, although that only partially solves our problem. My solution came to be this: assume that while Darth Sidious meditates on the history of the Sith in TPM, he is going by the Sith calendar, which we can presume to be Korriban's orbit: 780 days, of which a day is 28 standard hours. 21840 hours x 2000 years gives us 43680000 hours, which is approximately 4986 Earth years. Since we're at 4986 years before TPM, we're at 5018BBY. However, a GFFA year is three days longer than an Earth year, so I might be off by ~10 or so years. I was actually very surprised to see how close that timeline appears to match Legends' normal timeline. So the Hundred Year Darkness lasts from 5018-4918BBY. If Naga Sadow is the first Sith Lord to make contact with the Republic in "thousands" of years, then the minimum time that could have passed is 2000 years. 5018-4918BBY: The Darklighter and his followers leave the Jedi Order, running into Sith pirates and forming the Black Knights of Sith 2918BBY-2908BBY: The Great Hyperspace War occurs, concluding in the dismantling of the Sith Empire 2308BBY: The Dark Jedi Freedon Nadd is trained by Naga Sadow and kills him, establishing a petty kingdom on Onderon 1918BBY: Exar Kun falls to the Dark Side. The Great Sith War ensues until 1914BBY. If we could divide the Old Republic Era into several publishing eras, now is where we'd start. The Golden Age of the Sith (the era surrounding the Great Hyperspace War) and the era of Exar Kun are too distinct to group together, in my opinion. Exar Kun's era links us directly into the KOTOR multimedia project, and I would say that Knights of the Old Republic could easily make up its own publishing era encompassing everything from TOTJ to the Revan novel. Converting the 4000-3950BBY date gives us 1918-1868BBY. I could touch on how this renumbering might affect the era that the Infinite Empire ruled in (because we'd have to adjust Bastila's statements on galactic rotations) but I'm not going to get into that right now. Assuming that the distance between KOTOR and TOR remain equal (313 years), then TOR is placed in 1561BBY. This era's upper boundary is 1596BBY (the TOR comics) and lower boundary is 1547BBY (the newest expansion Onslaught.) Rechronicling from this point onwards is not necessary except for perhaps the Lost Tribe of the Sith stories. It can be assumed that the Eternal War (redated to 1554-1548BBY in this chronology) was devastating enough to reduce much of the Galaxy's technological level. The Sith Empire we see either progresses over the next 400 years until its collapse pre-Knight Errant, or at some point there is an interwar period until Phanius falls to the Dark Side and reunites the Sith Empire as Darth Ruin. That's up to your interpretation, but this is as slim a reconstruction of the timeline that I've been able to manage thus far. There is one more alternative theory I could present for an even more radical reconstruction, which is consolidating the RPG character Darth Rivan with Darth Revan (and placing the Jedi Civil War in the 1400sBBY) but I couldn't find a definitive date on when Rivan was Dark Lord of the Sith. If anyone has a date, please let me know because it could open the possibility of the TOR era directly preceding the Bane era. So, to cap it off, here's version 1 of my consolidated Old Republic timeline: 5018-4918: Ajunta Pall the Darklighter founds the Sith following the Hundred Year Darkness. 2918-2908: Naga Sadow initiates the Great Hyperspace War, leading to the dismantling of the Sith Empire (Golden Age of the Sith era) 1918-1868: Exar Kun reinvigorates the Sith Remnants, paving the way for the Mandalorian Crusades and the Jedi Civil War until the False Sith wipe each other out (Knights of the Old Republic era) 1599-1554: The True Sith reemerge until their emperor Darth Vitiate is forced to flee known space; the Eternal War ensues, destroying much of the Galaxy until the Eternal Empire is pushed back by the Outlander; then the New Sith War ensues (The Old Republic era) 1100-1000BBY: The New Sith War draws to a conclusion on Ruusan when Darth Bane fools the Brotherhood of Darkness into utter annihilation (Bane of the Sith era) I'm almost certain this isn't perfect, so please let me know if I've messed up at any point or if there's a way to simplify this even further.