Some 5000 years ago!
Heretic! He did it at 9:00 AM Greenwich time, April 24, 4004 BC! That's 6002 years ago! (Give or take a month.)
...in the seventeenth century [1644], in his great work, Dr. John Lightfoot, Vice-Chancellor of the University of Cambridge, and one of the most eminent Hebrew scholars of his time, declared, as the result of his most profound and exhaustive study of the Scriptures, that "heaven and earth, centre and circumference, were created all together, in the same instant, and clouds full of water," and that "this work took place and man was created by the Trinity on October 23, 4004 B.C., at nine o'clock in the morning."
Andrew D. White, A History of the Warfare of Science with Theology in Christendom (D. Appleton and Co., 1897, p. 9).
http://www.lhup.edu/~dsimanek/ussher.htm
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*My* version of the Bible says April 24th! Burn heretic burn!
April 24, October 23, what's the difference. Both days are on daylight savings time.