Narada Purana (Jyotisha Selections) · by Vyasa
Chapter 5 · Portents, Comets
ग्रहचारः केतवश्च
षण्मासवृद्ध्या ग्रहणं शोधयेद्रविचंद्रयोः ।पर्वेशास्तु तथा सत्यदेवा रव्यादितः क्रमात् ॥ ८१ ॥
In the full Narada Purana (Purva Bhaga) this is chapter 56, verse 81.
Work out the eclipses of the Sun and Moon by stepping six months at a time. The lords of the parvas (junction days) are seven gods, in order from the Sun.
Simple meaning: Eclipses of the Sun and Moon are found six months apart. Seven gods rule the eclipse seasons in turn.
ब्रह्मेन्द्विंद्रधनाधीशवरुणाग्नियमाह्वयाः ।
A junction day ruled by Brahma brings growth to animals, crops and the twice-born.
तद्वदेव फलं सौम्ये श्लेष्मपीडा च पर्वणि ।
A junction day of Soma gives much the same, with phlegm trouble. Indra's may bring quarrels and crop loss.
धनिनां धनहानिः स्यात्कौबेरं धान्यवर्धनम् ।
Kubera's eclipse costs the rich their money but grows grain. Varuna's harms kings but helps others.