Jyotiṣa-śāstra Saṅgraha: Threefold Division, Gaṇita Methods, Muhūrta, and Planetary Reckoning
मंदस्फुटकृता भुक्तिः शीघ्नोच्चभुक्तितः । तच्छेषं विवरेणाथ हन्यात्रिज्यांककर्णयोः ॥ ११७ ॥
maṃdasphuṭakṛtā bhuktiḥ śīghnoccabhuktitaḥ | taccheṣaṃ vivareṇātha hanyātrijyāṃkakarṇayoḥ || 117 ||
マンダ(遅行)によって作られる弧量(bhukti)は、シーグラ・ウッチャ(śīghra-ucca:迅行・高位)の弧量から求める。次に、残る差を補正として用い、トリジャー(trijyā:半径)、アンカ(aṅka:算出項)、カルナ(karṇa:斜辺/弦)の値を調整すべし。
Sanatkumara (in instruction to Narada on technical computation)
Vrata: none
Primary Rasa: shanta
Secondary Rasa: adbhuta
It emphasizes that correct observance of dharma (including vratas and sacred timings) depends on precise knowledge; the Purana supports moksha-dharma by grounding practice in reliable jyotiṣa computation.
Indirectly: by teaching how to compute true motion and corrections, it safeguards proper determination of auspicious times for Vishnu-bhakti practices (such as vrata observance and worship), making devotion disciplined and scripturally aligned.
Vedāṅga Jyotiṣa and gaṇita: using manda (mean) and śīghra/ucca (anomalistic) components to derive sphuṭa (corrected) values, and applying the remainder/difference to adjust trijyā (radius) and karṇa (chord/diagonal) calculations.