The finest distinctions: the exact condition of a graha, past karma, and the questions of longevity that turn on a half-degree. It is the last varga of the sixteen and the one read when everything else has been read.
Meaning
D60 divides each sign into sixty parts of thirty minutes, and is the finest division of the classical scheme. Each of the sixty parts has its own name and nature, and the varga is read for the last word on a planet's condition: the tradition says the shashtiamsha shows what the chart was before the life began.