Kāla-cakra and the Motions of the Sun, Moon, Stars, and Grahas
Bhāgavata Jyotiṣa Framework
अथ च यावतार्धेन नभोवीथ्यां प्रचरति तं कालमयनमाचक्षते ॥ ६ ॥
atha ca yāvatārdhena nabho-vīthyāṁ pracarati taṁ kālam ayanam ācakṣate.
太陽が天の道を半周するのに要する時を「アヤナ」(北行・南行の期間)という。
It defines ayana as the duration in which the Sun traverses half of the celestial pathway.
To explain Bhagavatam’s Vedic cosmology and how time (kāla) is understood through the Sun’s course within the universe.
It helps one align life with sacred time—seeing time as a divine order and using seasons/half-years to structure sādhana, festivals, and disciplined living.