Indian Astronomy's Influence on Persian Astronomy

The Surya Siddhanta, an influential Indian astronomical text, was translated into Persian during the reign of the Abbasid Caliph al-Ma'mun in the 9th century.

Al-Biruni, a renowned Persian astronomer and polymath, played a crucial role in transmitting Indian astronomical knowledge to the Islamic world through his extensive studies and translations of Indian texts.

The concept of Nakshatras, or lunar mansions, was adopted and modified by Persian astronomers to develop the concept of the astrolabe, an important astronomical instrument used for timekeeping, navigation, and astrological purposes.

The Zij al-Sindhind, an astronomical table originally developed in India, was translated into Persian and widely used by Persian astronomers for astronomical calculations and predictions.

The armillary sphere, an astronomical instrument used to model the celestial sphere, was adopted and modified by Persian astronomers from its Indian counterpart to create the渾天儀(浑天仪), a celestial globe used for astronomical observations.

The concept of Rasis, or zodiacal signs, was incorporated into Persian astronomy from Indian astrology and was used for astrological purposes, such as predicting the influence of celestial bodies on human affairs.

The concept of Panchang, a Hindu calendar that includes astronomical data, was adopted and modified by Persian astronomers to develop the concept of the quadrant, an instrument used for measuring angles and altitudes in astronomy and navigation.

The concept of Tithi, a Hindu unit of time representing a lunar day, was incorporated into Persian astronomy and used for timekeeping purposes, particularly in the context of astrological calculations.

The concept of Panchang, a Hindu calendar that includes astronomical data, was adopted and modified by Persian astronomers to develop the concept of the ephemeris, a table of astronomical data used for predicting the positions of celestial bodies.