1972
1976
1980
1984
1988
1992
1996
2000
2004
------
9 years with an extra day!

366*24*60*60=31622400

365*24*60*60=31536000

31622400*9 = 284601600

31536000*26= 819936000

819936000+284601600=1104537600

seconds since epoch to this year!