Twelve Tushita gods of the Chakshusha Manvantara agree to enter Aditi's womb to be gods again in the Vaivasvata Manvantara and are born to Kashyapa and Aditi as Vishnu, Shakra, Aryaman, Dhuti (Dhatri), Tvashtri, Pushan, Vivasvat, Savitri, Mitra, Varuna, Amsha and Bhaga. The gods are reborn every thousand ages by their own will. In 2.10 one Aditya sits in the sun's car each month with a rishi, Gandharva, Apsaras, Yaksha, serpent and Rakshasa: Dhatri (Chaitra), Aryaman (Vaishakha), Mitra (Jyeshtha), Varuna (Ashadha), Indra (Shravana), Vivasvat (Bhadrapada), Pushan (Ashvin), Parjanya (Kartik), Amsha (Margashirsha), Bhaga (Pausha), Tvashtri (Magha), Vishnu (Phalguna).
A summary page on the Kashi Khanda of the Skanda Purana (chapter 46) says Shiva sent Surya to Kashi, where he divided himself into twelve and stayed: Lolarka, Uttararka, Sambaditya, Draupadaditya, Mayukhaditya, Khakholka, Arunaditya, Vriddhaditya, Keshavaditya, Vimaladitya, Gangaditya and Yamaditya. Lolark Kund near Tulsi Ghat belongs to the first.
What is different here:
A local set of twelve sun shrines with their own names; none of the Vedic or Puranic twelve appears.
RV 2.27.1 names six Adityas (Mitra, Aryaman, Bhaga, Varuna, Daksha, Amsha); 9.114.3 says the Aditya gods are seven; 10.72.8 gives Aditi eight sons. In the Upanishad, Vidagdha Shakalya asks Yajnavalkya how many gods there are; the answer shrinks from 3,306 to thirty-three to one. The thirty-three are eight Vasus, eleven Rudras, twelve Adityas, Indra and Prajapati; the Adityas are the twelve months of the year, so called because they move on taking everything with them.
What is different here:
No story of birth, no names for the twelve, no chariot: the twelve are the months, by an etymology from 'taking'.
Daksha has thirteen daughters, Aditi first. From Aditi come the twelve Adityas, lords of the universe: Dhatri, Mitra, Aryaman, Shakra, Varuna, Amsha, Bhaga, Vivasvat, Usha (so Ganguli; usually read Pushan), Savitri, Tvashtri and Vishnu; the youngest surpasses them all. In the Gita (Bhishma Parva 34) Krishna says he is Vishnu among the Adityas and Aryaman among the Pitris.
What is different here:
A bare list within a genealogy; no Tushitas, no months; stresses Vishnu as youngest and best.
The twelve sons of Aditi are Vivasvan, Aryama, Pusha, Tvashta, Savita, Bhaga, Dhata, Vidhata, Varuna, Mitra, Shakra and Urukrama (Vamana). In 12.11 the monthly riders are Dhata, Aryama, Mitra, Varuna, Indra, Vivasvan, Pusha (Tapas), Parjanya (Tapasya), Amshu (Sahas), Bhaga (Pushya), Tvashta (Isha) and Vishnu (Urja).
What is different here:
Vidhata replaces Amsha in the birth list; in the monthly list Vishnu rides in Kartik (Urja) and Parjanya in Phalguna, unlike the Vishnu Purana.
Sources: The Vishnu Purana, tr. H. H. Wilson (1840); Green Message: Appearance of the 12 Adityas in Kashi (Skanda Purana, Kashi Khanda); Hymns of the Rigveda, tr. R. T. H. Griffith (1896), hymns read for the Vedic layer; The Upanishads, tr. F. Max Muller (Sacred Books of the East 1 and 15); The Mahabharata, tr. K. M. Ganguli (1883-96), sections read for the Vedic layer; Srimad-Bhagavatam (Bhaktivedanta Vedabase)