Indology, Ancient Indian History, Indian Astronomy, Metrology, Hinduism.
Hindi translation of Sūrya Siddhānta, Bhūgolādhyaya 78–79 by Śrīvāstava [1]. Here is the Sanskrit text and English translation of Āryabhaṭīya, Kālakriyāpāda 16 by Shukla [2]. Both of these texts, Sūrya Siddhānta and Āryabhaṭīya, are currently dated to ~ sixth century, so a great antiquity can not