Bhāratavarṣa–Navabheda-Vyavasthā
The Nine Divisions of Bhāratavarṣa and Its Sacred Geography
उदयास्तमनेत्विंदोर्वर्द्धंत्यापो ह्रसन्ति च । अतो न्यूनातिरिक्ताश्च पक्षयोः शुक्लकृष्णयोः
udayāstamanetviṃdorvarddhaṃtyāpo hrasanti ca | ato nyūnātiriktāśca pakṣayoḥ śuklakṛṣṇayoḥ
Because the Moon’s rising and setting make the waters swell and subside, the bright and dark fortnights—śukla and kṛṣṇa pakṣa—are therefore found at times shorter and at times longer.
Suta Goswami
Tattva Level: pasha
It frames sacred time (tithi and pakṣa) as part of Shiva’s ordered cosmos, where natural rhythms—like the Moon’s influence—govern the conditions for dharma, vrata, and worship.
Linga worship is traditionally aligned with auspicious tithis and pakṣas; this verse explains why lunar halves may vary, underscoring careful observance of Shiva-puja timings within Saguna devotional practice.
Observe Shiva-vratas with attention to lunar timing (pakṣa/tithi) and support the practice with steady japa of the Pañcākṣarī mantra ("Om Namaḥ Śivāya"), especially on key nights like Mahāśivarātri.