Jyotiṣa-śāstra Saṅgraha: Threefold Division, Gaṇita Methods, Muhūrta, and Planetary Reckoning
तल्लुंबपापबिंबांतर्दृणौ व्याप्तरविघ्नभाः । अस्ते सावयवा ज्ञेया गतैष्यास्तिथयो बुधैः ॥ १६७ ॥
talluṃbapāpabiṃbāṃtardṛṇau vyāptaravighnabhāḥ | aste sāvayavā jñeyā gataiṣyāstithayo budhaiḥ || 167 ||
Quand on voit le disque de la Lune au couchant, avec son orbe entaché—son intérieur percé par l’éclat obstructeur du Soleil—alors les sages doivent reconnaître que les tithi doivent être établis dans leurs parts entières, en distinguant ce qui est déjà écoulé de ce qui reste à venir.
Sanatkumara (in instruction to Narada within Moksha-dharma/Vedic time-reckoning context)
Vrata: none (tithi-discernment guidance applicable to vrata timing)
Primary Rasa: shanta
Secondary Rasa: adbhuta
It stresses dharmic precision: sacred acts (vratas, pūjā, dāna) gain their intended fruit when performed at the correct tithi, which must be known by careful observation and calculation.
Bhakti is supported by right observance—devotional vows and worship depend on proper tithi determination, so devotion is expressed not only by feeling but by disciplined, scripturally aligned practice.
Jyotiṣa Vedāṅga (astronomy/astrology): discerning tithis by the sun–moon relationship, specifically distinguishing elapsed (gata) and upcoming (eṣyā) portions for accurate ritual timing.