The hexarchate lagged in invariant technology, which could be used under any calendrical regime. In particular, too close to the rot the voidmoths’ primary stardrives would fail. Without the voidmoths to connect the hexarchate’s worlds, the realm would unravel. If the heretics converted the Fortress to their own calendrical system, the problem became critical. The hexarchate would have to contend with a rival power at the heart of its richest systems.
