Jyotiṣa-śāstra Saṅgraha: Threefold Division, Gaṇita Methods, Muhūrta, and Planetary Reckoning
अर्कोनचंद्रलिप्तास्तु तिथयो भोगभाजिताः । गतगम्याश्च षष्टिघ्ना नाऽतोभुक्ततरोद्धृताः ॥ १२५ ॥
arkonacaṃdraliptāstu tithayo bhogabhājitāḥ | gatagamyāśca ṣaṣṭighnā nā'tobhuktataroddhṛtāḥ || 125 ||
Les tithis (jours lunaires) se calculent d’après les longitudes du Soleil et de la Lune; en divisant par le « bhoga » (l’arc parcouru), on obtient leurs parts. Les parts écoulée et restante sont ensuite multipliées par soixante (pour obtenir des kalā), puis dégagées selon ce qui a été goûté et ce qui reste à goûter.
Sanatkumara (in instruction to Narada on technical calculation within Moksha Dharma context)
Vrata: none
Primary Rasa: shanta
Secondary Rasa: none
It emphasizes that dharma and vrata observance should be aligned with accurate sacred time (kāla), since correct tithi-determination supports disciplined practice leading toward moksha.
Bhakti practices like pūjā, upavāsa, and vrata depend on proper timing; this verse supplies the technical basis for fixing tithis so devotional acts are performed at the intended sacred moments.
Jyotiṣa Vedāṅga: computing tithi from solar and lunar longitudes, and converting elapsed/remaining portions into kalās by multiplying by sixty for ritual-time precision.