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Hayanaratna · by Balabhadra
Chapter 8 · Month Chart and Monthly Results
मासप्रवेशादिविचाराध्यायः
द्यौरमेघाः१७स्वयमाः२०सूर्य्यमन्दोच्चं राशिपूर्वकम् ॥ग्रहोनितं च मंदोच्चं मंदकेन्द्रं भवेदिह ॥
The Sun's manda uchcha (high point), beginning with signs, is: dyau (2) signs, 17 degrees, 20 minutes. This uchcha less the planet is here the mandakendra (the Sun's distance from its high point).
Simple meaning: The Sun's manda high point is 2 signs 17 degrees 20 minutes. The high point less the Sun gives the manda anomaly.
सावनमासेराश्यंशकलाविकलाद्यागतिः ॥
Table of the mean Sun's motion for 1 to 12 months, in signs, degrees, minutes and seconds.
त्रिभादल्पं भुजः केंद्रं रसेषूनं त्रिभाधिकम्॥
Finding the arc from the manda anomaly: under 3 signs it is the arc; over 3, take it from 6; over 6, take away 6; over 9, take it from the full…
भुजांशमिति कोष्ठस्थम्फलमंशादिकं रवेः॥
Manda equation from the table: take the cell for the arc's whole degrees, then add the remainder times the cell difference divided by 60.