Today is the Divine Appearance Day of Lord Nityananda
Krishna is the Supreme Personality of Godhead Who manifests Himself in various Vishnu-tattva forms. His first expansion is Baladeva from Whom unlimited Vishnu-tattva forms subsequently expand. Lord Nityananda is Baladeva. The Lord occasionally appears in the material world to perform pastimes which include saving the fallen souls from the bondage of material existence. Circa 500 years ago Krishna and Baladeva appeared in Bengal as Chaitanya and Nityananda.