Narada Purana (Jyotisha Selections) · by Vyasa
Chapter 6 · Calendar, Muhurta Elements
कालमानं मुहूर्ताङ्गानि च
तेषामीशाः क्रमाज्ज्ञेया विष्णुर्देवपुरोहितः ।पुरंदरो लोहितश्च त्वष्टाहिर्बुध्न्यसंज्ञकः ॥ १२२ ॥
In the full Narada Purana (Purva Bhaga) this is chapter 56, verse 122.
Their lords are to be known in order: Vishnu, the priest of the gods, Purandara, Lohita, Tvashta, and the one called Ahirbudhnya.
Simple meaning: The twelve five-year cycles have lords. The first six are Vishnu, Jupiter, Indra, Lohita, Tvashta and Ahirbudhnya.
पितरश्च ततो विश्वे शशींद्राग्न्यश्विनो भगः ।
The last six cycle lords are named. The five years inside each cycle are ruled by Agni, Sun, Moon, Brahma and Shiva.
अथाद्वेशचमूनाथसस्यपानां बलाबलम् ।
Check the strength of the year's lord, army chief and crop lord, and the planets' movement. Then give the result.
सौम्यायनं मासषट्कं मृगाद्यं भानुभुक्तितः ।
The Sun's northward half-year starts at Capricorn and is the gods' day. The southward half starts at Cancer and is their night.