D16 · Ṣoḍaśāṁśa

The sixteenth divisional chart, the Ṣoḍaśāṁśa, also written Kalāṁśa, cuts each sign into sixteen parts of 1°52′30″ and re-maps every one to a sign of its own. Where the D1 shows the whole of a life, this chart narrows to a single department: vehicles, comforts, luxuries, the pleasant weight of owned things. Classical texts read it for happiness drawn from material ease, and just as much for the disturbance of that ease, the conveyance that fails, the comfort that turns to worry.

The parts are counted from a starting sign set by the sign’s modality, from Aries for the movable signs, Leo for the fixed, Sagittarius for the dual. A planet strong in the birth chart can sit awkwardly here, and the tradition treats that gap as the difference between owning a thing and being at rest in it.

Comfort is not the same as peace, and the sixteenth chart is where the two are told apart.

On the Oroiael instrument the D16 is a classical reference rather than a chart cast live. It is read alongside the fourth house and Śukra, the other significators of comfort and conveyance, on the principle that a claim holds better where the systems agree.