How many seconds are in 40 years?

Answer 1

31,536,000 seconds * 40 years = 1,261,440,000 seconds! And now, for the monkey wrench! Depending on what year you were born, and for me that was 1969, the number of leap years I could reasonably have experienced would be 10, so that adds 10 leap days to our approximate our final answer.

The leap year schedule from the year of my birth would have had me experiencing my first leap year in 1972 since the previous leap year had occurred in 1968, the year before I was born.

So the 10 leap years from 1969 are: 1) 1972 2) 1976 3) 1980 4) 1984 5) 1988 6) 1992 7) 1996 8) 2000 9) 2004 10) 2008

So, factoring in one extra 24 hour cycle times the number of leap days in 40 years adds another 864,000 seconds (86,400 seconds per day x 10 leap days).

Add 864,000 to our previous result of 1,261,440,000 and the final result is that in 40 years, a human would have lived approximately 1,262,304,000 seconds.