The appearance of Kalki
When the practices taught by the Vedas and the institutes of law, shall nearly have ceased, and the close of the Koli age shall be nigh, a portion of that Divine Being who exists of his own spiritual nature, in the character of Brahma, and who is the Beginning and the End, and who comprehends all things shall descend upon the earth. He will be born as Kalki in the family of an eminent Brahmin, of "Shambhala village ", endowed with the eight superhuman faculties. By his irresistible might, He will destroy all the barbarians and thieves, and all whose minds are devoted to iniquity. He will then re-establish righteousness upon earth; and the minds of those who live at the end of the Koli age, shall be awakened, and shall be as pellucid as crystal. The men who are thus changed by virtue of that peculiar time, shall be as the seeds of human beings, and shall give birth to a race who shall follow the laws of the Kritya Age, the Age of Purity.
~ Vishnu Purana 4.24
Please note shambala is in the center of the world
i will say around 2012 or 2024 he will come out