Q. 1. I have read in the Krishna Book that in the 31st cycle of the Vaivasvata Manu, the Dvapara-yuga changes places with Treta-yuga due to the appearance of Lord Krishna. I would like to know how Krishna appears in the other cycles of other Manus.
Answer by Romapada Swami: Lord Krishna appears in His original form as the Original Supreme Personality of Godhead only once in a day of Brahma – this is when He performs His most attractive and intimate Vrindavana pastimes, displaying very confidential loving exchanges with the Vrajavasis as a child and youth. This occurs during the 28th yuga cycle of Vaivasvata Manu (not 31st). In every other Dvapara yuga, a plenary expansion of Krishna, the four-handed Vaasudeva-Krishna appears.
Q. 2. I have also read that that Sri Chaitanya Mahaprabhu appears only once in a day of Brahma. Is it true? Does it mean He does not appear in other Kali-yugas? Kindly elaborate.
Answer by Romapada Swami: Yes, Lord Caitanya also appears in His original form and teaches the highest mellows of pure love for Krishna only once in a day of Brahma — in the Kali yuga immediately following the appearance of Lord Krishna in His original form, which happens to be the present age! But just as a plenary portion of Krishna appears in every Dvapara, similarly in every Kali yuga a form of the Lord appears as the yuga-avatar to teach the process of congregational chanting of the Holy Names.