Kaliyuga appears repeatedly in cycles, and each time it comes, the Lord has ordained that the only method to attain Him is through the chanting of the holy name.
Kaliyuga is extremely special. Kaliyuga in which Sri Krsna appears with Radharani as Caitanya Mahāprabhu happens once in one day of Brahma – śrī-kṛṣṇa-caitanya rādhā-kṛṣṇa nahe anya.
Śrīla Śukadeva Goswami explains that in Satya-yuga, we should meditate; in Treta yuga, perform sacrifices; in Dwapar yuga, serve the Lord’s lotus feet and in Kaliyuga, chant the holy names of the Lord.
