Śrīmad-Bhāgavatam · Text 5.22.6
Who is speaking and story frame
अथ च यावतार्धेन नभोवीथ्यां प्रचरति तं कालमयनमाचक्षते ॥ ६ ॥
atha ca yāvatārdhena nabho-vīthyāṁ pracarati taṁ kālam ayanam ācakṣate.
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].
Read this verse on Vedabase.ioThis verse has no purport; its meaning is explained by the verses around it.