SB 5.22.6
अथ च यावतार्धेन नभोवीथ्यां प्रचरति तं कालमयनमाचक्षते ॥ ६ ॥
SYNONYMS
atha—now; ca—also; yāvatā—by as long as; ardhena—half; nabhaḥ-vīthyām—in outer space; pracarati—the sun moves; tam—that; kālam—time; ayanam—ayana; ācakṣate—is said.
TRANSLATION
Thus the time the sun takes to rotate through half of outer space is called an ayana, or its period of movement [in the north or in the south].