Matsyapurana 124.71

124.71

sūryo dvādaśabhiḥ śīghraṃ muhūrtairdakṣiṇāyane
trayodaśārdhamṛkṣāṇāṃ madhye carati maṇḍalam //

In other words, the sun in his southward course rapidly goes over thirteen and a half asterisms in 12 muhûrtas (in day time ?), and in 18 muhûrtas at night, in travelling comparatively at a slower speed, like the lump of clay in the centre of the potter's wheel.—71-72.