Janmashtami celebrates the birth of Krishna. He is not a vyakti or person but shakti or energy. Krishna was poornakalaavataran , a complete incarnation. The purpose of celebration is to realise that Krishna is in me. In the Bhagwad Gita, Krishna says, "One who sees everyone in Me and sees Me in everyone, for such a person, I shall never remain hidden and he shall never be far from me."
