अधोलोकवर्णनम् (Adholoka-varṇana) — Description of the Lower Worlds and Cosmographic Measures
मेषति च तुलान्ते च भास्करोदयतः स्मृताः / मुहूर्त्ता दश पञ्चैव अहो रात्रिश्च तावती
meṣati ca tulānte ca bhāskarodayataḥ smṛtāḥ / muhūrttā daśa pañcaiva aho rātriśca tāvatī
In Meṣa and at the end of Tulā, the measure of day and night is reckoned from the Sun’s rising; then the day is fifteen muhūrtas, and the night the same.