SB 5.22.6
Devanāgarī
अथ च यावतार्धेन नभोवीथ्यां प्रचरति तं कालमयनमाचक्षते ॥ ६ ॥
Text
atha ca yāvatārdhena nabho-vīthyāṁ pracarati taṁ kālam ayanam ācakṣate.
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].