Graha–Ketu–Utpāta Lakṣaṇas: Solar/Lunar Omens, Comets, Eclipses, and Calendar Rules
तपास्तपस्य क्रमशश्चैत्रादीनां समाह्वयाः । यस्मिन्मासे पौर्णमासी येन धिष्ण्येन संयुता ॥ १३१ ॥
tapāstapasya kramaśaścaitrādīnāṃ samāhvayāḥ | yasminmāse paurṇamāsī yena dhiṣṇyena saṃyutā || 131 ||
Tapas e Tapasya são, na devida ordem, nomes também atribuídos aos meses que começam com Caitra. Cada mês é identificado pela noite de lua cheia (pūrṇimā) que nele ocorre e pela mansão lunar (nakṣatra) específica com a qual essa lua cheia está em conjunção.
Sanatkumara (in dialogue with Narada)
Vrata: none
Primary Rasa: shanta
Secondary Rasa: adbhuta
It frames sacred time as a dharmic structure: months are not merely civil labels but are ritually meaningful, defined through Paurṇimā and nakṣatra-conjunctions that guide observances and vows.
By clarifying the sacred calendar, it supports bhakti-practice indirectly—helping devotees perform vrata, pūjā timings, and festival observances on correct tithis and nakṣatra-yogas, which strengthens disciplined devotion.
Jyotiṣa (Vedāṅga astronomy/astrology): determining month-names and ritual months through the full moon (Paurṇimā) and its associated nakṣatra, a key rule for calendrical computation.