Jyotiṣa-śāstra Saṅgraha: Threefold Division, Gaṇita Methods, Muhūrta, and Planetary Reckoning
स्यात्क्रमज्याविधिश्चैवमुक्रमज्यास्वपिस्मृतः । ज्यां प्रोह्य शेषं तत्त्वताश्वि हंतं तद्विवरोद्धृम् ॥ १०० ॥
syātkramajyāvidhiścaivamukramajyāsvapismṛtaḥ | jyāṃ prohya śeṣaṃ tattvatāśvi haṃtaṃ tadvivaroddhṛm || 100 ||
এইদৰে ক্ৰম-জ্যাৰ বিধি কোৱা হ’ল; উ-ক্রম-জ্যা (উলটা ক্ৰম-জ্যা) পদ্ধতিও স্মৃত। জ্যাখন বিয়োগ কৰি অৱশিষ্টক তত্ত্বতঃ সঠিকভাৱে লৈ, শীঘ্ৰে প্ৰয়োগ কৰি, তাৰপিছত তদ্বিবৰ (ভেদ) নিৰ্ণয় কৰিব লাগে।
Sanatkumara (teaching Narada)
Vrata: none
Primary Rasa: shanta
Secondary Rasa: vira
It highlights that Moksha-Dharma teaching in the Narada Purana also preserves precise śāstric disciplines—showing that right knowledge (vidyā), including Jyotiṣa/Gaṇita, supports dharma and clarity of practice.
Indirectly: accurate Jyotiṣa computations underpin correct timing (kāla) for vrata, pūjā, and observances, which strengthens disciplined devotion rather than replacing it with guesswork.
Vedāṅga Jyotiṣa (astronomy/astrology) with a Gaṇita step: computing krama-jyā/u-krama-jyā by subtracting a jyā, using the remainder, and deriving the interval (vivara) for successive values.