Graha–Ketu–Utpāta Lakṣaṇas: Solar/Lunar Omens, Comets, Eclipses, and Calendar Rules
सुभिक्षकृत्कौमुदाख्यः केतुः कुमुदसन्निभः । आवर्तकेतुसंध्यायां शशिरो नेष्टदायकः ॥ १०८ ॥
subhikṣakṛtkaumudākhyaḥ ketuḥ kumudasannibhaḥ | āvartaketusaṃdhyāyāṃ śaśiro neṣṭadāyakaḥ || 108 ||
Ketu bernama Kaumuda—yang membawa hasil tuaian melimpah—muncul laksana bunga kumuda putih. Namun apabila senja ditandai oleh Ketu yang berpusar (āvarta), maka Bulan (Śaśin) menjadi pemberi hal yang tidak diingini, yakni petanda tidak baik.
Sanatkumara (teaching Narada)
Vrata: none
Primary Rasa: adbhuta
Secondary Rasa: bhayanaka
It frames celestial phenomena as dharmic indicators: some omens support well-being (subhikṣa), while others warn of adverse outcomes, encouraging vigilance and right conduct.
Indirectly: by highlighting inauspicious periods, it implies the devotee should intensify sādhana—japa, pūjā, and Viṣṇu-smaraṇa—rather than be careless when signs indicate disorder.
Jyotiṣa (Vedāṅga astrology/omenology): classification of Ketu-comet appearances and their predicted effects, especially when occurring at saṃdhyā (twilight) in relation to the Moon.