The Beginning of The Golden Age - Prahlad and the Krishna Kids.

10,000-year Golden Age

The Brahma Vaivarta Purana (related to Rathantara kalpa) mentions a 10,000-year period, starting from the traditional dating of the Kali Yuga epoch, during which bhakti yogis will be present.

Source : https://en.wikipedia.org/wiki/Kali_Yuga#:~:text=10%2C000-year%20Golden%20Age,-Learn%20more&text=The%20Brahma%20Vaivarta%20Purana%20(related,bhakti%20yogis%20will%20be%20present.