Firdaria: your planetary periods

Firdaria (from the Persian fardar) is a medieval time-lord technique used by Persian and Arabic astrologers such as Abu Ma’shar and later by Guido Bonatti. Life is divided into nine periods of fixed length, 75 years in all, each ruled by a planet or lunar node; each planetary period is split into seven sub-periods. The order depends on whether you were born by day or by night.

Sources: Abu Ma’shar; Guido Bonatti, Liber Astronomiae; Robert Zoller.