Covenant Battle Calendar

The Covenant Battle Calendar was the standardized timekeeping calendar employed by the Covenant military. It uses the Covenant measurement system, where Ages, Cycles, Units, and to a lesser extent Centals based on High Charity time, where when combined form a standardized military calendar for operational coordination with a broader historical framework of prophetic "Ages" tied to theological and cultural milestones. It is the Covenant equivalent of the military calendar employed by the United Nations Space Command.

Units of time

Main article: Covenant measurement system

Age

Main article: Age

The Covenant have seven ages that form the progression of the Covenant history: Abandonment, Conflict, Reconciliation, Discovery, Conversion, Doubt, and Reclamation. While they happened in order initially, following this ages may not run sequentially, and are broad overall themes of the period the Covenant are in. A ceremony called the Progression of the Ages is held by followers of the Great Journey that goes through the ages in the order they initially happened in the calendar.

Cycle

A cycle is equal to an artificial day on High Charity. A cycle has 265 units, which is equal to 265.2 hours or 11.05 days in human Earth time.

Unit

A unit is equal to a hundred centals, which is equal to approximately one hour (60.046528302 minutes) human Earth time.

Cental

A cental is equal to approximately 36 seconds (36.0279169812 seconds) human Earth time, while this is not in the Covenant Battle Calendar itself, they are akin to human seconds in the Military Standard Time where they are still used to make units that the calendar does use.

Miscellaneous

• Step of Silence

List of appearances

• Halo: The Flood (First appearance)
  • Adjunct
• Halo: Ghosts of Onyx
• Halo: Silent Storm
• Halo: Oblivion
• Halo: Campaign Evolved