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"She had told six Kel companies that the best use she could make of their loyalty was to have them fight the heretics and lose. Meat for a sham victory. All for one day in the calendar." ― Ninefox Gambit, Chapter 17

The high calendar was the calendar used and enforced throughout the heptarchate and hexarchate. Observance of the high calendar allows the regime's exotic technology, including mothdrive and communications, to work, though this dependence on local observances to maintain calendrical values leaves the hexarchate vulnerable to calendrical rot.[1]


The calendar has a 100-minute hour and a 30-hour day.[2]

The regime does not regulate the length of the week. The Kel military use a ten-day week, while the Mwennin week is eight days and Shuos Spirel's people use seven days.


The high calendar encompasses feasts, remembrances, and the rest of the hexarchate's social order, down to which languages and cultural practices are approved and which are considered suspect or heretical.[3]

Every citizen's birthday is celebrated on the high calendar's new year, with ages starting from one year old at birth to account for time spent gestating.[4] New Year Festival observances include specific dances[5] and a gift exchange,[6] and are regulated by sumptuary laws set by the Rahal.[7]


The high calendar was instituted along with the founding of the heptarchate. During its first century, Rahal Ienora introduced changes which allowed citizens across countless planets, moons, and stations to adhere to local dinural cycles in their observations of the high calendar.[8]

Heptarch (later Hexarch) Nirai Kujen was responsible for major changes in the high calendar, including increasing the remembrances because he enjoyed them. Reducing the number of remembrances was one of the goals of the Liozh heresy.[citation needed] Later on, a rule change allowing prisoners of war to be used in remembrances led to an attempted secession which endured until the death of its instigator.[9]

In 1252,[10] a major calendrical spike and the broadcast of a revised calendar caused the hexarchate to break into two realms, the Compact taking on the new calendar and the Protectorate adhering to the old.[11] Nine years later, the two realms united under the new calendar.[12]


  • Sumptuary regulations for the New Year Festival are memorized by prospective Rahal cadets.[13]
  • The hexarchate's practice of annual, communal birthdays and including time spent gestating as the child's first year is the traditional way of reckoning Korean age.[14]


  1. Ninefox Gambit, Chapter 1
  2. Calendrical Rot
  3. Ninefox Gambit, Chapter 1
  4. Birthdays
  5. Revenant Gun, Chapter 15
  6. Revenant Gun, Chapter 2
  7. Revenant Gun, Chapter 15
  8. Hexarchate Stories: Hexarchate (And Heptarchate) Timeline
  9. Seven Views of a Kel Secession
  10. Hexarchate Stories: Hexarchate (And Heptarchate) Timeline
  11. Revenant Gun, Chapters 1,2
  12. Revenant Gun, Chapter 12
  13. Revenant Gun, Chapter 15
  14. Hexarchate Stories: Birthdays (Author's Note)