The Itihasa-Purana, the Epic-Puranic narratives of the Sanskrit Epics (Mahabharata and the Ramayana) and the Puranas, contain royal genealogies of the lunar dynasty and solar dynasty which are regarded by Indian traditions as historic events, and used in the Epic-Puranic chronology to establish a traditional timeline of Indian history.
In Hinduism, Itihasa-Purana, also called the fifth Veda, refers to the traditional accounts of cosmogeny, myths, royal genealogies of the lunar dynasty and solar dynasty, and legendary past events, as narrated in the Itihasa (Mahabharata and the Ramayana) and the Puranas. They are highly influential in Indian culture, and many classical Indian poets derive the plots of their poetry and drama from the Itihasa. The Epic-Puranic chronology derived from the Itihasa-Purana is an influential frame of reference in traditional Indian thought.