Jyotiṣa-śāstra Saṅgraha: Threefold Division, Gaṇita Methods, Muhūrta, and Planetary Reckoning
शंकुच्छायाहते त्रिज्ये विषुवत्कर्कभाजिते । लंबाक्षज्ये तयोस्छाये लंबाक्षौ दक्षिमौ सदा ॥ १३८ ॥
śaṃkucchāyāhate trijye viṣuvatkarkabhājite | laṃbākṣajye tayoschāye laṃbākṣau dakṣimau sadā || 138 ||
တရိဇျာ (trijyā—အချင်းဝက်) ကို သင်္ကူအရိပ် (śaṅku-chāyā) နှင့် မြှောက်ပြီး ဗိသုဝတ်နှင့် ကရ்க (Cancer) ၏ စံအတိုင်းအတာများဖြင့် ခွဲလျှင် ရလာသောတန်ဖိုးသည် လမ္ဗာက္ṣ-ဇျာ (lambākṣa-jyā—လတ္တီကျုဒ်၏ စိုင်း) ဖြစ်သည်။ ထိုသို့ရသော အရိပ်နှစ်မျိုးမှ လတ္တီကျုဒ်နှစ်ခုကို အမြဲတမ်း တောင်ဘက် (dakṣiṇa) ဟု ယူရမည်။
Sanatkumara (teaching Narada in a Vedanga/astronomical context)
Vrata: none
Primary Rasa: shanta
Secondary Rasa: adbhuta
It shows that Narada Purana integrates Moksha-oriented teaching with Vedāṅga Jyotiṣa: precise knowledge of time, direction, and seasonal markers supports correct dharma-practice and disciplined living.
Indirectly: by emphasizing accurate astronomical reckoning (equinox/seasonal measures), it safeguards the proper timing of vrata and pūjā—practical supports that strengthen steady Vishnu-bhakti.
Vedāṅga Jyotiṣa and mathematical astronomy: using a gnomon’s shadow with trijyā and jya (sine) operations to derive lambākṣa (latitude) and determine southern orientation.
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