My Dinner With Andre ("pockets of light") 1981.

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
Thanks to Peter Rothschild for the video.