Wikipedia
Ādityas
In Hinduism, Ādityas (, pronounced ), meaning "of Aditi", refers to the offspring of Aditi. The name, Aditya, is used in the singular to mean the Sun God, Surya.
The Bhagavata Purana lists a total of twelve Adityas as Sun-gods. In each month of the year a different Aditya is said to shine. Each of these Adityas is a different expression of Lord Vishnu in the form of the Sun-God.