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 ||
Trong khoảng ba ngày trong tuần, có thể có một tithi được xem là “adhikā” (tithi dư), và hai tithi bị xem là “ninditā” (bị chê trách). Tithi được quy về ngày nào thì theo ngày mà tithi ấy còn kéo dài cho đến (hoặc qua) lúc mặt trời lặn.
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.