Śrīla Viśvanātha Cakravartī Ṭhākura gives his verdict that Satyavrata appeared in the Cākṣuṣa-manvantara. When the Cākṣuṣa-manvantara ended, the period of Vaivasvata Manu began. By the grace of Lord Viṣṇu, Satyavrata received instructions from the second fish incarnation and was thus enlightened in all spiritual knowledge.
King Satyavrata was illuminated with all Vedic knowledge by the mercy of Lord Visnu, and in this period he has now taken birth as Vaivasvata Manu, the son of the sun-god
Expressions researched:
"King Satyavrata was illuminated with all Vedic knowledge by the mercy of Lord Visnu, and in this period he has now taken birth as Vaivasvata Manu, the son of the sun-god"
Srimad-Bhagavatam
SB Canto 8
King Satyavrata was illuminated with all Vedic knowledge by the mercy of Lord Visnu, and in this period he has now taken birth as Vaivasvata Manu, the son of the sun-god.
King Satyavrata was illuminated with all Vedic knowledge by the mercy of Lord Visnu, and in this period he has now taken birth as Vaivasvata Manu, the son of the sun-god.