Tithi-vicara
Determination of Tithi for Fasts, Parana, and Pitri Rites
पारणे मरणे नॄणां तिथिस्तात्कालिकी स्मृता । पित्र्येऽस्तमनवेलायां स्पर्शे पूर्णा निगद्यते ॥ १५ ॥
pāraṇe maraṇe nṝṇāṃ tithistātkālikī smṛtā | pitrye'stamanavelāyāṃ sparśe pūrṇā nigadyate || 15 ||
পাৰণ আৰু মানুহৰ মৃত্যুৰ সময়ত সেই ক্ষণত চলি থকা তিথিয়েই গ্ৰহণীয় বুলি স্মৃত। কিন্তু পিতৃকৰ্মত সূৰ্যাস্ত-সন্নিহিত সময়ক যি তিথিয়ে স্পৰ্শ কৰে, তাক ‘পূৰ্ণ’ বুলি কোৱা হয়।
Narada
Vrata: none
Primary Rasa: shanta
Secondary Rasa: bhakti
It preserves dharmic precision in time-keeping: different sacred acts require different tithi rules, ensuring that vrata observance and pitṛ-tarpaṇa/śrāddha are performed in the correct temporal window.
It supports bhakti through disciplined observance—proper pāraṇa timing protects the integrity of a Vishnu-centered vrata, while correct pitṛ rites uphold gratitude and dharma, both considered supportive to spiritual progress.
Vedāṅga Jyotiṣa (Vedic calendrics/astronomy): it distinguishes “moment-prevailing tithi” for pāraṇa and death from the “sunset-contact tithi counted as complete” rule used for pitṛ rites.