Saeculum Caelum Timeline

Saeculum Caelum is the timeline setting of the Mobile Suit Gundam: HALCYON mini series and related media.

Chronology
Several major events has passed before 324 S.C, including the Spacenoid Conflict (began with the One Year War), and the becoming of the Republic of Zeon as an independent nation from Earth at the end of the conflict, triggered by the introduction of Unicorn Gundam.