पञ्चसिद्धान्तिका (आचार्य वराहमिहिर - सूर्य, रोमक, पौलिश, वासिष्ठ एवं पितामह सिद्धान्त)

54 PAÑCASIDDHĀNTIKĀ III.15 as the half cara is always less, there is always a remainder when this subtraction is made by which time, therefore, local sunset is always earlier. When the Sun is in the 6 rāśis, Tulā etc., the local sunset is earlier by the time difference for longitude and still earlier by the half cara. Therefore it is earlier by the sum of the two. Thus, in all cases, with regard to places in India, the sunset is earlier than the mean sunset at Yavanapura and therefore the motion for the time is always to be subtracted; and, that is the instruction. If the place is north of India or west, it may happen that the half cara is greater than the time difference for longitude. Then when the Sun is in the six rāśis from Meṣa, the sunset may be later and the motion for the later time will have to be added to the planet. Further, there are two other corrections, Bhujāntara (correction for the Equation of the centre) and Udayāntara (Reduction to the Equator), the equivalent of the equation of time which have got to be made, but not given by this Siddhānta either because these are very small or because this Siddhānta is not aware of its existence. The Vākyakaraṇa omits to give the Udayāntara alone because it is not found even in its source, Bhāskarīya. The Sūrya Siddhānta omits the cara and Udayāntara corrections, the former because it begins the day at midnight which is not affected by cara and the latter because it is not aware of its existence. Śrīpati is the first to give the Udayāntara. TS are unaware that the two corrections mentioned above are given here, which can be seen from the commentary pp. 12-13, and English notes pp. 16-17. They also seem to think that the instruction [L2