Matsya Purana — Cosmography of Śākadvīpa and Successive Dvīpas: Mountains
विद्युच्च पञ्चमी प्रोक्ता शुक्ला चैव विभाव्यते पुण्ड्रा षष्ठी तु विज्ञेया पुनश्चैव विभावरी //
vidyucca pañcamī proktā śuklā caiva vibhāvyate puṇḍrā ṣaṣṭhī tu vijñeyā punaścaiva vibhāvarī //
The fifth lunar day (Pañcamī) is declared to be “Vidyut,” and it is to be regarded as auspicious and bright. The sixth lunar day (Ṣaṣṭhī) should be known as “Puṇḍrā,” and again it is also called “Vibhāvarī.”
This verse does not discuss Pralaya; it classifies lunar days (tithis) by specific epithets and auspicious character, indicating the Purana’s practical ritual-timekeeping tradition.
It supports dharmic governance and household observance by guiding the selection and understanding of tithis (Pañcamī and Ṣaṣṭhī) for rites, vows, and public ceremonies—key responsibilities for kings and householders who maintain social-religious order.
The significance is calendrical-ritual: Pañcamī and Ṣaṣṭhī are given names and described as bright/auspicious, which can be used to time consecrations, temple rites, and other Vastu/ritual undertakings according to Matsya Purana-style panchanga guidance.