Bhagavatapurana 5.1.30

5.1.30

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yāvad avabhāsayati sura-girim anuparikrāman bhagavān ādityo vasudhā-talam ardhenaiva pratapaty ardhenāvacchādayati tadā hi bhagavad-upāsanopacitāti-puruṣa-prabhāvas tad anabhinandan samajavena rathena jyotirmayena rajanīm api dinaṃ kariṣyāmīti sapta-kṛt vastaraṇim anuparyakrāmad dvitīya iva pataṅgaḥ //

30. Of the extent of the world (up to the Lokaloka mountains) which is lighted by the sun in his circuit round the Mount Meru, he makes at a time one half bright with his light and leaves the other half enveloped in darkness. Then (during his reign) the emperor Priyavrata, like another sun, not being pleased with the division of time into day and night and being possessed of superhuman glory that had developed by the contemplation of the Almighty Lord, made seven circuits following the sun, determined to make night also day as he rode in his luminous chariot, which ran as fast as the chariot of the great luminary.