Timeline

Timeline of The Galaxy:

• Ancient history
• M1 - The Age of Terra (also called the Golden Age) begins.
• M2
• M3
• M4
• M5
• M6
• M7
• M8
• M9
• M10
• M11
• M12
• M13
• M14
• M15 - Beginning of the Dark Age of Technology^[1]
• M16
• M17
• M18
• M19
• M20
• M21 - Beginning of the Dark Age of Technology^[2]
• M22
• M23
• M24
• M25 - End of the Dark Age of Technology and beginning of the Age of Strife.^[1]
• M26 - End of the Dark Age of Technology and beginning of the Age of Strife.^[2]
• M27
• M28
• M29
• M30 - The Fall of the Eldar, the birth of Slaanesh, and the formation of the Eye of Terror occurs. The Ages of Strife ends. The Unification Wars occur. The Great Crusade begins.
• M31 - The Great Crusade ends. The Horus Heresy occurs. The first Age of the Imperium era, the Age of Rebirth, begins.
• M32 - The Age of Rebirth ends. The Forging begins.
• M33
• M34
• M35 - The Forging ends. The Nova Terra Interregnum begins.
• M36 - The Nova Terra Interregnum ends. The Age of Apostasy begins.
• M37 - The Age of Apostasy ends. The Age of Redemption begins.
• M38 - The Age of Redemption ends.
• M39 - The Waning begins.
• M40
• M41 - The Waning ends. The Time of Ending occurs. The Great Rift is formed. The Age of the Dark Imperium begins.
• M42

Sources

• 1: Warhammer 40,000 6th Edition Rulebook, pg. 167
• 2: Warhammer 40,000 3rd Edition Rulebook, pg. 278 — - The Journal of Keeper Cripias