When was Adam created?

God created man in his own image, in the image of God created he him; male and female created he them. Genesis 1:27

Jehovah's Witnesses: 4026 BCE

According to reliable Bible chronology Adam was created in the year 4026 B.C.E., likely in the autumn of the year, at the end of the sixth day of creation." (April 1, 1968, Watchtower) This was the basis of the failed 1975 prophecy: that Armageddon would occur in 1975, 6000 years after Adam's creation. The failure of the "reliable Bible chronology" was never explained, and the whole 6000 years thing was promptly dropped and forgotten after 1975 passed uneventfully.