Bharatiya Jyotihshastra (History of Indian Astronomy), translated by R. V. Vaidya v2.c12.s2.t7.45

v2.c12.s2.t7.45

Although the Pañcasiddhāntikā does not explicitly state that the Pulisa Siddhānta in it postulated the Yugādi system, it appears from the couplets, which mention the intercalary months and suppressed tithis, that it did not postulate the Yuga system. Moreover Brahmagupta has blamed only Romaka on that account. This tends to show that the Pulisa Siddhānta of the Pañcasiddhāntikā did probably contain the description of the yuga-system. The Pulisa’s statement as quoted by Utpala includes it. The ‘sāvana māna’ (i.e. civil measure) alluded to in the statement is termed as ‘solar’ in other works, and the solar measures in the former are termed sāvana by the latter. The measures of ‘bhagaṇas’ etc., as quoted by Utpala from the Pulisa Siddhānta, taking the meanings of the words ‘sāvana’ etc. as given by other works are given below :—