अधोलोकवर्णनम् (Adholoka-varṇana) — Description of the Lower Worlds and Cosmographic Measures
यत्रोद्यन्दृश्यते सूर्यस्तेषां स उदयः समृतः / प्रणाशं गच्छते यत्र तेषामस्तः स उच्यते
yatrodyandṛśyate sūryasteṣāṃ sa udayaḥ samṛtaḥ / praṇāśaṃ gacchate yatra teṣāmastaḥ sa ucyate
Where the rising Sun is seen, that is deemed their sunrise; and where it passes into disappearance, that is called their sunset.