Narada Purana — Purva Bhaga, Shloka 125
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 ||
Tithi (hari bulan) dihitung daripada longitud Surya dan Chandra; dengan membahagi menurut ‘bhoga’ (lengkung yang telah dilalui) diperoleh bahagiannya. Bahagian yang telah berlalu dan yang masih berbaki kemudian didarab enam puluh (untuk memperoleh kalā), lalu diambil menurut apa yang telah dinikmati dan apa yang masih tinggal untuk dinikmati.
Sanatkumara (in instruction to Narada on technical calculation within Moksha Dharma context)
Vrata: none
Primary Rasa: shanta
Secondary Rasa: none
FAQs
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.