Times when the grahas roam and seize

Devas roam mostly on the full-moon day, asuras and their retinue at the two twilights, gandharvas on the eighth lunar day, yakshas on the first, ancestral bhutas in the dark fortnight, rakshasas at night and, per the commentary, pishachas also at night, and nagas on the fifth, troubling people. A physician of truth, compassion and self-control, devoted to the Omniscient, should treat the curable ones with mantras and potent medicines; these grahas are said to be very cruel and hard, and child grahas difficult.