Jyotiṣa-śāstra Saṅgraha: Threefold Division, Gaṇita Methods, Muhūrta, and Planetary Reckoning
साक्षार्कापक्रमयुतिर्द्दिक्साम्येंतरमन्यथा । शेषह्यानांशाः सूर्यस्य तद्वाहुज्याथ कोटिजाः ॥ १३९ ॥
sākṣārkāpakramayutirddiksāmyeṃtaramanyathā | śeṣahyānāṃśāḥ sūryasya tadvāhujyātha koṭijāḥ || 139 ||
เมื่ออปกรมะ (เดคลิเนชัน) ของพระอาทิตย์ประกอบตรงกับทิศดิกสามยะ (ทิศวิษุวัต) ก็ได้ผลโดยตรง; หากไม่ตรงต้องคำนวณอีกแบบ ส่วนที่เหลือเป็นอณางศะอันละเอียดของพระอาทิตย์ และจากนั้นจึงหาค่าพหุชยาและโกฏิชยาได้
Sanatkumara (in dialogue with Narada, within the Moksha Dharma discourse that includes technical cosmology/astronomy)
Vrata: none
Primary Rasa: shanta
Secondary Rasa: adbhuta
It shows that dharma and higher aims (including moksha-oriented discipline) are supported by precise knowledge of time and cosmos; correct understanding of the Sun’s motion underpins sacred calendrical order.
Indirectly: by emphasizing accurate time-reckoning for vrata, pūjā, and sacred observances, it supports disciplined devotional practice even though the verse itself is technical (Jyotiṣa) rather than devotional poetry.
Vedāṅga Jyotiṣa: computation of solar declination (apakrama) and related trigonometric measures—jyā (sine/cord) and koṭi-jyā (cosine)—used in traditional astronomical calculation.