Bharatiya Jyotihshastra (History of Indian Astronomy), translated by R. V. Vaidya v2.c12.s2.t28.2

v2.c12.s2.t28.2

He has written a commentary on Brahmagupta’s Brahma Siddhānta. Bhāskarācārya has cited his name several times. Pṛthūdaka’s name also appears in the commentary on Khaṇḍakhādya by Varuṇa, which was written about Śaka 962. This indicates that he lived before Śaka 962. It seems that he was not known to Bhaṭotpala. But his commentary on Brahma Siddhānta cites Balabhadra’s name. From this he appears to have been Bhaṭotpala’s contemporary or he may have belonged to a slightly later date. In other words, date comes to about Śaka 900.