Decennials Doctrine

Decennials are described as a chronocrator technique: a planet becomes ruler of a span of life and may then be subdivided into shorter planetary allotments.

This overview names the reviewed Firmicus-style lane without treating every period-rulership tradition as the same method.

The local notes use Firmicus as the primary procedural witness and Valens, Brennan, and Abu Ma'shar as adjacent context for period rulership language.

This keeps the page from flattening different chronocrator families into a single calculation.

The method described here begins from the sect light, assigns a major period of ten years and nine months, and uses a fixed planetary month table for subperiods.

the overview cites this as a lane-specific calculation, not a universal period formula.

the overview avoids equating Firmicus decennials with every chronocrator or period-lord method preserved in Hellenistic and medieval sources.

Future variant pages should cite their own starting rules, sequence rules, and subperiod tables.

The cited material supports a reference explanation of the Firmicus-style decennial timeline and the cited distinction between major periods and subperiod allotments.

The cited sources do not establish planet-by-planet delineations or blend decennials with other timing techniques.

Those claims require separate reviewed interpretive facts or rules.

Decennials are adjacent to firdaria and annual profections because all three organize a chart through time-lord or period-ruler language.