It takes 16 fish years to equal one human year. The life expectancy of most fish tends to be very short.
909,814,300 seconds equals 28.85 years.
One half a century equals 50 years as a century equals 100 years.
A millennium equals 1000 years, so 5.25 millennia equals 5.25 millennia x 1000 years per millennia, which equals 5,250 years.
15 years
1,000.