The earth was only about 1,656 years old at the time. In around 1650, Archbishop James Ussher of the Church of Ireland determined that the earth was created on October 23, 4004 BC, at 9:00 AM, Pacific Daylight Time.
There are a few variables, as the article states, but the date is probably very close or spot on. I never thought about the time of day of creation.
Total nonsense.