Vishnupurana 2.10.6

2.10.6

mādhave nivasanty ete śucisaṃjñe nibodha me //

PARÁŚARA.--Between the extreme northern and southern points the sun has to traverse in a year one hundred and eighty degrees, ascending and descending. His car is presided over by divine Ádityas, Rishis, heavenly singers and nymphs, Yakshas, serpents, and Rákshasas (one of each being placed in it in every month). The Áditya Dhátri, the sage Pulastya, the Gandharba Tumburu, the nymph Kratust́halá, the Yaksha Rathakrit, the serpent Vásuki, and the Rákshas Heti, always reside in the sun's car, in the month of Madhu or Chaitra, as its seven guardians. In Vaiśákh or Mádhava the seven are Áryamat, Pulaha, Náreda, Punjikásthalí, Rathaujas, Kachaníra, and Praheti. In Śuchi or Jyesht́ha they are Mitra, Atri, Háhá, Mená, Rathaswana, Takshaka, and Paurusheya. In the month Śukra or Áshádha they are Varuńa, Vaśisht́ha, Huhu, Sahajanyá, Rathachitra, Nága, and Budha. In the month Nabhas (or Srávańa) they are Indra, Angiras, Viswávasu, Pramlochá, Śrotas, and Elapatra (the name of both serpent and Rákshas). In the month Bhádrapada they are Vivaswat, Bhrigu, Ugrasena, Anumlocha, Ápúrańa, Śankhapála, and Vyághra. In the month of Áswin they are Púshan, Gautama, Suruchi, Ghritáchí, Sushena, Dhananjaya, and Váta. In the month of Kártik they are Parjanya, Bharadwája, (another) Viswávasu, Viswáchí, Senajit, Airávata, and Chápa. In Agraháyana or Márgaśírsha they are Ansu, Kaśyapa, Chitrasena, Urvasi, Tárkshya, Mahápadma, and Vidyut. In the month of Pausha, Bhaga, Kratu, Urńáyu, Purvachittí, Arisht́anemi, Karkot́aka, and Sphúrja are the seven who abide in the orb of the sun, the glorious spirits who scatter light throughout the universe. In the month of Mágha the seven who are in the sun are Twasht́ri, Jamadagni, Dhritarasht́ra, Tilottamá, Ritajit, Kambala, and Brahmápeta. Those who abide in the sun in the month Phálguna are Vishńu, Visvamitra, Súryaverchchas, Rambhá, Satyajit, Aswatara, and Yajnápeta.