A billion is a difficult number to comprehend, but one advertising agency did a good job of putting that figure into some perspective in one of its press releases.
A. A billion seconds ago it was 1987.
B. A billion minutes ago Jesus was alive.
C. A billion hours ago our ancestors were living in the Stone Age.
D. A billion days ago no-one walked on the earth on two feet.
E. A billion Rand is spent in only 27 hours and 12 minutes, at the rate the SA government is spending it.
Okay, so you want more accurate numbers?
Assume it is now 29th January, 2016 at 8:46 PM.
1,000,000 seconds ago: 7:00 AM on 18th January
10,000,000 seconds ago: 3:00 AM on 6th October 2015 (115 days ago)
100,000,000 seconds ago: 12:00 PM on 28th November 2012 (3.17 years ago)
Billion and above:
1,000,000,000 seconds ago: 7:00 PM on 22nd May 1984 (31.69 years ago)
10,000,000,000 seconds ago: 3:00 AM on 13th March 1699 (316.88 years ago)
100,000,000,000 seconds ago: 27th March 1154 B.C. (3168.81 years ago)
1,000,000,000,000 seconds ago: 15 December 29674 B.C. (31,688.1 years ago)
P.S. The times (where mentioned) are accurate to an extremely high precision, give or take a minute, for most of the dates.