What are apheta chains?

In Book IV.12 of the Anthologies, Vettius Valens lists the chart points from which a forecaster should begin the distribution of chronocratorships, depending on the life domain being investigated. For rank, recognition, and the father: start from the Sun. For health, disease, and the mother: start from the Moon. For occupation and livelihood: start from the MC. For material success: start from the Lot of Fortune. For mortality and trouble: start from the Descendant. For property and legacies: start from IC. He continues through Venus, Mars, Saturn, Jupiter, and Mercury, each governing its own domain.

Each of these points is an apheta, a releaser. The chain that runs from each one uses the same mechanics as Zodiacal Releasing: the signs advance in zodiacal order, each allotting the minor years of its ruler (Saturn 30, Jupiter 12, Mars 15, Sun 19, Venus 8, Mercury 20, Moon 25), with a major period and a sub-period nested within it. The standard two-chain Zodiacal Releasing system, from Fortune and Daimon, is itself a subset of this: two instances of the same engine, singled out because Fortune and Daimon carry the broadest significance across bodily and active life respectively.

Running all twelve chains simultaneously means each domain of life has its own independent timing cycle. They fall in and out of phase with each other naturally.

The interpretive weight comes from convergence. When several chains release through the same sign at the same time, Valens treats the result as more certain. He states this directly: when the chronocrators agree, results are certain; when they point in different directions, outcomes are partial or mixed. The Sun, Moon, and Ascendant are the primary aphetas, the foundational layer Valens returns to most consistently. A convergence that includes any of these three carries the strongest signal.