1 million years
To celebrate the new Millennium in 2000
One millennium is one thousand years (1,000 years).
One generation is 25 years.
One Thousand years.
20 years
I think you should get the one with many years of experience
1.44
One generation is twenty years.
One generation is twenty years.
About 1.9 years.
A century is 100 years.
There are about 0.000114077 years in one hour.