Narada Purana — Purva Bhaga, Shloka 154
Graha–Ketu–Utpāta Lakṣaṇas: Solar/Lunar Omens, Comets, Eclipses, and Calendar Rules
तिथिर्वारत्रये त्वेका ह्यधिका द्वे च निंदिते । सूर्यास्तमनपर्यंतं यस्मिन्वारे तु या तिथिः ॥ १५४ ॥
tithirvāratraye tvekā hyadhikā dve ca niṃdite | sūryāstamanaparyaṃtaṃ yasminvāre tu yā tithiḥ || 154 ||
Sur l’étendue de trois jours de la semaine, un tithi peut apparaître comme « adhikā » (tithi supplémentaire) et deux peuvent être tenus pour « ninditā » (blâmés). Le tithi doit être rattaché au jour de la semaine où il se maintient jusqu’au (ou au-delà du) coucher du soleil.
Sanatkumara (in dialogue with Narada)
Vrata: none
Primary Rasa: shanta
Secondary Rasa: none
FAQs
It safeguards dharma by ensuring that vows and worship are performed on the correctly determined tithi—using the sunset boundary—so that religious acts align with cosmic time (kāla).
Bhakti practices often depend on correct vrata timing; this verse provides the calendrical rule (sunset-based tithi assignment) that helps devotees observe fasts and worship on the intended sacred day.
Vedāṅga Jyotiṣa: it teaches tithi–vāra nirṇaya—when a tithi is counted for a given weekday—along with the notions of ‘adhikā’ (extra occurrence) and ‘ninditā’ (ritually censured) tithis.