The five eras of Changeling history can be divided into the Mythic Age, the Sundering, the Shattering, the Interregnum, and the Resurgence.
After 400+ years of a Dark Age for the Fae, the Moon Landing in 1969 AD either brought about the Resurgence, or was the product of the re-opening of the ways between the mundane world and the mythic. With a wave of Fae coming out of hiding from Arcadia (Mostly Sidhe, but some of the Commoner Kithain and a few of the Rarer Kithain as well), access between the mundane world and the Dreamings was re-established and the theory of reconnecting to Arcadia became closer to fact (although still conjecture).