Jyotiṣa-śāstra Saṅgraha: Threefold Division, Gaṇita Methods, Muhūrta, and Planetary Reckoning
ग्रासेन स्वाहतेच्छाद्यमानामे स्युर्विशोपकाः । पूर्णांतं मध्यमत्र स्याद्दर्शांतेंजं त्रिभोनकम् ॥ १५८ ॥
grāsena svāhatecchādyamānāme syurviśopakāḥ | pūrṇāṃtaṃ madhyamatra syāddarśāṃteṃjaṃ tribhonakam || 158 ||
月食のとき、月の諸分(kalā)が月自身の「噛みつき」によって覆われるなら、それらは viśopakāḥ と呼ばれる。この算定では「満ちの終わり」を中点とし、半月の終わり(darśānta)において「不生」(aja)は三倍(tribhonaka)であると説かれる。
Sanatkumara (teaching Narada in a technical dharma/observance context)
Vrata: none
Primary Rasa: adbhuta
Secondary Rasa: shanta
It links spiritual discipline with precise time-knowledge: understanding lunar transitions and eclipse-conditions is presented as part of dharmic order, supporting correct observance and inner steadiness.
Indirectly: by emphasizing correct ritual timing and clarity about lunar states, it supports orderly worship and vrata-practice, which in the Narada Purana are often framed as aids to steady Vishnu-bhakti.
Vedāṅga Jyotiṣa (astronomical/astrological reckoning): technical naming of obscuration during eclipse, and rules about ‘middle’ and ‘end’ points tied to pūrṇānta and darśānta calculations.