Jyotiṣa-śāstra Saṅgraha: Threefold Division, Gaṇita Methods, Muhūrta, and Planetary Reckoning
दोर्ज्योत्तरगुणाभुक्तिस्तत्त्वनेत्रोद्धृता पुनः । स्वमंदपरिधिक्षुण्णा भगणांशोद्धृताःकलाः ॥ ११६ ॥
dorjyottaraguṇābhuktistattvanetroddhṛtā punaḥ | svamaṃdaparidhikṣuṇṇā bhagaṇāṃśoddhṛtāḥkalāḥ || 116 ||
ຕໍ່ຈາກນັ້ນ ຄ່າຄວາມໂຄ້ງ (bhukti) ທີ່ໄດ້ຈາກການນໍາຄຸນະທີ່ສູງກວ່າໄປປະຍຸກຕ໌ກັບສາຍຄໍານວນ (chord) ຈະຖືກດຶງອອກອີກຄັ້ງດ້ວຍວິທີ «tattva-netra». ຕໍ່ມາ ເມື່ອປັບດ້ວຍການແກ້ໄຂມັນດາ (manda) ຂອງຕົນ ແລະຄ່າຮອບວົງ ແລ້ວ ຄ່ານາທີ (kalāḥ) ຈຶ່ງຖືກຫາອອກຈາກສ່ວນທີ່ສອດຄ່ອງຂອງວົງຈອນດາວ (bhagaṇa-aṃśa).
Sanatkumara (in instruction to Narada on technical calculation)
Vrata: none
Primary Rasa: shanta
Secondary Rasa: adbhuta
It frames precise time-reckoning (kāla-nirṇaya) as a disciplined śāstric tool—supporting correct observance of dharma (vrata, tithi, muhūrta) that ultimately aids steadiness of mind on the path of mokṣa.
Indirectly: by teaching accurate calendrical/astronomical computation, it safeguards correct timing of Vaiṣṇava observances (fasts, pūjā, festivals), which strengthens regular bhakti practice through properly aligned ritual time.
Vedāṅga Jyotiṣa: computational astronomy—using chord-based measures, manda (anomaly) correction, circumference relations, and converting bhagaṇa portions into kalā (minutes) for precise planetary/time calculations.