Timeline of The Galaxy:
- Ancient history
- M1 - Age of Terra (also called the Golden Age) begins.[3]
- M2
- M3
- M4
- M5
- M6
- M7
- M8
- M9
- M10
- M11
- M12
- M13
- M14
- M15 - Dark Age of Technology begins.[1]
- M16
- M17
- M18
- M19
- M20
- M21
- M22
- M23
- M24
- M25 - Dark Age of Technology ends, Age of Strife begins.[1]
- M26
- M27
- M28
- M29
- M30 - The Fall of the Eldar, the birth of Slaanesh, and the formation of the Eye of Terror occurs. Ages of Strife ends. The Unification Wars occur. The Great Crusade begins.[1]
- M31 - The Great Crusade ends. The Horus Heresy occurs. The first Age of the Imperium era, Age of Rebirth, begins.[1]
- M32 - Age of Rebirth ends, The Forging begins.[3]
- M33
- M34
- M35 - The Forging ends, Nova Terra Interregnum begins.[3]
- M36 - Nova Terra Interregnum ends, Age of Apostasy begins.[3]
- M37 - Age of Apostasy ends, Age of Redemption begins.[3]
- M38 - Age of Redemption ends.[3]
- M39 - The Waning begins.[3]
- M40
- M41 - The Waning ends, Time of Ending occurs. The Great Rift is formed. Age of the Dark Imperium begins.[4]
- M42 - The Indomitus Crusade is waged.[5]
Sources
- 1: Warhammer 40,000 6th Edition Rulebook, pgs. 166-167
- 2: Warhammer 40,000 3rd Edition Rulebook, pg. 278 - The Journal of Keeper Cripias
- 3: Warhammer 40,000 5th Edition Rulebook, pg. 122-125
- 4: Warhammer 40,000 8th Edition Rulebook, pgs. 46–47
- 5: Codex: Space Marines (8th Edition), pgs. 20-21