c. 35,000,000,000 BR

Aion awakens; measurable time begins.

c. 33,600,000,000 BR

The Inward Sundering: the deficit and surplus planes separate, and the balanced core remains.

c. 12,000,000 BR

The First Equilibrium: the balanced core becomes the Material Plane.

c. 2,500,000 BR

The Creation of Caeldon.

c. 2,500,000-c. 500,000 BR

The First Regional Differentiations of Caeldon.

c. 700,000-c. 500,000 BR

The First Material Lineages of Caeldon.

c. 500,000-c. 425,000 BR

The First Stabilizations on Caeldon: Elves in the Elderweald, Dwarves in the Ironspine, the threshold peoples in the broken ground between.

c. 490,000-c. 460,000 BR

The Founding of the Rootcrown Concord.

c. 465,000-c. 445,000 BR

The Holdmaking of the Ironspine.

c. 465,000-c. 420,000 BR

The Enclosure of the Seams: Dwarven holdmaking walls and smokes the Goblins out of their seam-warrens.

c. 460,000-c. 438,000 BR

The Founding of the Ironspine Holds.

c. 410,000-c. 385,000 BR

The Elderweald-Ironspine Frontier: the verge wars of Elves and Dwarves over springs, slopes, and groves.

c. 405,000-c. 392,000 BR

The Founding of the Thornbound Circles.

c. 390,000-c. 375,000 BR

The Founding of the Crownbough Courts.

c. 380,000-c. 330,000 BR

The Stabilization of Failed Mending: the distorted healing becomes heritable in Trolls.

c. 375,000-c. 355,000 BR

The Courts of Stone and Canopy: the High Elf-Dwarf rivalry of pride, fought with insults, raids, and ambush.

c. 360,000-c. 348,000 BR

The Founding of the Stonewake Compact.

c. 352,000-c. 349,000 BR

The Krystallis Incursion, the first of three on Caeldon, leaves the Hanging Vale.

c. 335,000-c. 328,000 BR

The Roothollow Rupture: the Drowning Bloom floods the upper underworld, the Dark Elves are driven deeper, and the Elf-Dwarf enmity begins.

c. 328,000-c. 318,000 BR

The Sealing of the Upper Roothollows.

c. 324,000-c. 318,000 BR

The Founding of the Gloamroot Covenant.

c. 320,000-c. 314,000 BR

The Heartwell Struggles: the first great Dark Elf-Dwarf war, fought for the Rootstone Heartwell.

c. 318,000-c. 305,000 BR

The Bitter Root Histories: the underworld wound becomes Elven memory.

c. 300,000-c. 220,000 BR

The First Human Emergence on Caeldon, in the basins.

c. 260,000-c. 195,000 BR

The Rise of the Upland Colossal Civilization.

c. 250,000-c. 168,000 BR

The Vent-Houses of the Furnace World: Kobold vent-kin keep the ash-furnace world breathing.

c. 235,000-c. 175,000 BR

The Rise of the Archive-Law Civilization.

c. 230,000-c. 190,000 BR

The Swearing of the Crossing-Charges: Troll lines holding the crossings of the colossal roads swear the first bridge-oaths.

c. 225,000-c. 168,000 BR

The Fall of the Ash-Furnace Civilization; its overburn glasses the Glassbelt.

c. 210,000-c. 182,000 BR

The Founding of the Floodkeeper Houses.

c. 198,000-c. 160,000 BR

The Withdrawal of the Upland Colossal World.

c. 195,000-c. 160,000 BR

The Long Hunger: famine breaks Ogre camps into hunger-bands, and the first hearth-houses bind strength to care.

c. 190,000-c. 160,000 BR

The Consolidation of the Bankright Circles.

c. 180,000-c. 150,000 BR

The Founding of the Windscar Pacts.

c. 180,000-c. 150,000 BR

The Unlisting of the Warrens: the archive world strikes the Goblin warrens from its rolls and drives them from their gaps.

c. 178,000-c. 162,000 BR

The Closure of the First Nesting Confluence.

c. 175,000-c. 140,000 BR

The Walking of the Unkept Roads: the Salvage Peoples and the first Edgeway circuits.

c. 170,000-c. 152,000 BR

The Founding of the Foldward Commons.

c. 165,000-c. 146,000 BR

The Founding of the Gaugeward Leagues.

c. 160,000-c. 120,000 BR

The Rise of the Sepulchre-Kin and their Record-engine.

c. 150,000-c. 120,000 BR

The Last Keeping: the archive world seals its last cities, and what its keepers carry out passes to the Reedfolk Floodkeepers.

c. 132,000-c. 130,000 BR

The Mnemosyne Null Incursion leaves the Paling.

c. 160,000-c. 156,000 BR

The Second-Channel Feud: the first great Thaluren feud over a redirected run.

c. 160,000-c. 145,000 BR

The Leeward-Windscar Terms.

c. 155,000-c. 149,000 BR

The Sounding Gate Quarrel.

c. 154,000-c. 148,000 BR

The Measure Cistern Reckoning.

c. 153,000-c. 148,000 BR

The Gravel Oath Accord.

c. 144,000-c. 138,000 BR

The Estuary Terms.

c. 135,000-c. 128,000 BR

The Rimward Passage War: Rimward strongholds shut their wells, and High Scar escort-bands take water by force.

c. 100,000-c. 98,000 BR

The Turnwater Reopening Accord, the last of the great far-side terms, reopens the Soundchain one cargo and one season at a time.

c. 120,000-c. 50,000 BR

The Gathering of the Confluence.

c. 110,000-c. 80,000 BR

The Unburial War, the unrecorded fall of the Sepulchre-Kin.

c. 70,000-c. 35,000 BR

Human bands settle the Headwater Marches.

c. 40,000-c. 20,000 BR

The Founding of the Confluence Marches.

c. 30,000-c. 8,000 BR

The Lower River Absorptions: Human river powers swallow the Reedfolk water orders, and their command of the water becomes service.

c. 28,000-c. 14,000 BR

The Headwater Alignments.

c. 26,000-c. 10,000 BR

The Elderweald Border Pressures.

c. 24,000-c. 2,000 BR

The Confluence Rise.

c. 22,000-c. 16,000 BR

The Founding of the Serathic League.

c. 20,000-c. 9,000 BR

The Iron Compacts take their present shape.

c. 19,000-c. 18,000 BR

The Serathic Oath of Layers: the great river houses force three thresholds of belonging on a feuding river town.

c. 18,000-c. 7,000 BR

The Human Corridor Orders.

c. 18,000-c. 8,000 BR

The Chain-Camps hold Ogre camps on the corridor roads by debt; from c. 15,000 BR the Hearth-Weight Compacts form as their refusal.

c. 17,000-c. 7,000 BR

The River-Lords' Peace: pacts and fortified crossings turn the Serathic towns into a lasting river league.

c. 16,000-c. 8,000 BR

The Headwater Exchange Roads.

c. 16,000-c. 8,000 BR

The Crownbough Embassies.

c. 16,000-c. 2,000 BR

The Spread of the Predecessor-Frames.

c. 15,000 BR

The first river towns swear a shared roster of gods: the Sworn Accord takes its shape.

c. 10,000-c. 2,000 BR

The Confluence-Crownbough Rivalries.

c. 4,000-c. 3,500 BR

The Qzoth Incursion, the last, is burned back and leaves the Wrongwood.

c. 2,000 BR-c. 500 CR

The Hardening of the Lordships: the lordships, holds, leagues, and temples of the medieval world dig in, most of them won by the sword.

c. 1,500 BR-c. 200 CR

The Awakening of the Wrought: old workframes wake as persons, and their fight to be counted as people begins.

c. 50 CR

Sanctuary workshops hide newly awakened Wrought and swear to who they are: the first houses of the Mending Orders.

c. 200 CR

The Mending Orders have houses in most mixed towns of the Headwater, Ironspine, and Broken Marches worlds.

c. 500-c. 1500 CR

The Bridge-Holders' Quarrels: at the Greyford Reach and places like it, old roads, neglected bridges, tolls, mending, and salvage are fought over.

c. 1,200 CR

The Wake-Seal: a landslide wakes a Sepulchre-Kin Record-engine, and the survivors' rite closes the Hushvale under fog.

c. 1,350 CR

The medieval present: "now".