I get 31.7098 years for a billion seconds. A billion seconds ago was in approximately February of 1977.
A billion minutes ago was in the year 106 A.D. Jesus had been dead for quite some time.
A billion hours ago was 114,115.25 years. Humans were living in the Stone Age. Score one point for veracity.
A billion days ago, Australopithecus africanus was flourishing. They were clearly bipedal.
I just love e-mail factoids.