Narada Purana — Purva Bhaga, Shloka 25
Tithi-Nirṇaya for Vratas: Ekādaśī Rules, Saṅkrānti Punya-kāla, Eclipse Observances, and Prāyaścitta
परास्त्रिंशश्च घटिकाश्चत्वारिंशच्च पूर्ववत् । आदित्यशीतकिरणौ ग्राह्यावस्तंगतौ यदि ॥ २५ ॥
parāstriṃśaśca ghaṭikāścatvāriṃśacca pūrvavat | ādityaśītakiraṇau grāhyāvastaṃgatau yadi || 25 ||
याव्यतिरिक्त, पूर्वीप्रमाणे छत्तीस व चाळीस घटिकाही (गणाव्यात). सूर्य व शीतकिरण चंद्र अस्तंगत झाले असतील तर त्यानुसार ते कालमान ग्राह्य धरावे.
Sanatkumara (in instruction to Narada)
Vrata: none
Primary Rasa: shanta
Secondary Rasa: none
FAQs
It emphasizes kāla-śuddhi—correct reckoning of time—because accurate time determination supports the purity and efficacy of Vedic observances and dharmic duties.
While not directly teaching bhakti, it supports devotional practice by ensuring that vows, worship timings, and ritual observances are performed at properly determined times.
Vedāṅga Jyotiṣa: the use of ghaṭikā-based time measurement and the rule that when Sun and Moon have set, time-points must be computed/accepted with that condition in view.