the principle texts upon which classical Indian astrology is based are early medieval compilations, notably the Bṛhat Parāśara Horāśāstra, and Sārāvalī by Kalyāṇavarma.
Nicholas Campion, both an astrologer https://amieziyl620338.pointblog.net/new-step-by-step-map-for-kartenlegen-am-telefon-71547761