on average, about 1.002075 tropical years or 1.002074 calendar years
About 284 years is one pluto year!
every 4 years
10000000000,8800006770032
it takes 4 years for a leap year to occur
1 if it is a leap year
14 years. 1 dog year is 7. each dog year is 7 years for them but 1 year for us.
One human year is seven cat years.
7 dog years is one person year
There are 100 years in a century.
The formula is: 10.5 dog years per human year for the first 2 years, then 4 dog years per human year for each year after.
60 years
500 years