The Cosmic Calendar is the calendar by which the galaxy operates. Mentioned in the Metroid: Zero Mission manual, it is said that two events occurred in the Cosmic Calendar, the forming of the Galactic Federation in 2003, and the attack on the Space Research Vessel Marina and the events leading up to Samus Aran's Zero Mission in the Year 20X5. The Metroid Prime Trilogy manual refers to the calendar as the Cosmo Dating System.
"In the year 2003 of the Cosmic Calendar, representatives from the many different planets in the galaxy established a congress called the Galactic Federation, and an age of prosperity began." - Zero Mission
"In the year 20X5 of the Cosmic Calendar, a terrible incident occurred." - Zero Mission
|Zebes||Zero Mission • Raid on Planet Zebes • Final Conflict|
|Aether||Aether incident • Battle of the Hive • Dark Age • Fourth Battle of Torvus • Golden Age|
|Other Topics|| Bryyo dynasties • Cosmic Calendar • Cycle • Horus Rebellion • Metroids • Space Pirates (Assault on the Pirate Homeworld) • Species War |
Tetra Border Wars • The Treaty of Elysia • Year 20X5
|Biographies||Dark Samus • Ridley • Samus Aran|