Saturn is 4.6 billion years old
Earth and Saturn are as old as the solar system, about 4 billion years, or 4x109 years old
Saturn is approximately 4.6 billion years old.
Assuming you are 11 years old on Earth, you would be about 1/3rd (11 / 29.4) Saturn-years old.
if you are 12 you would probally 70 - 80 yrs old
about 800,000,000 years old or so.
If you were 12 years old on Earth and lived on Saturn, you would still be 12 years old in terms of your age; age is a measure of the time you've been alive, regardless of the planet. However, a year on Saturn lasts about 29.5 Earth years, so if you were to measure your age in Saturn years, you would be less than half a year old, as you would have only completed a fraction of one Saturn year.
4.6 billion years old
5 1/2 years old
One Saturn year is equal to about 29.5 Earth years.
That is how many Earth years it takes for Saturn to go around the Sun once.
Saturn takes 29 earth years for one orbit, so someone who has reach 8 years on earth (ie orbited the sun 8 times on earth) would be 8/29 ≈ 0.28 years old on Saturn, ie they would have completed about 0.28 of one orbit of Saturn around the sun. As Saturn takes about 24491 Saturn days to complete one orbit of the sun they would be 8/29 × 24491 ≈ 6756 Saturn days old compared to the 365.25 × 8 = 2922 Earth days they are.
28 years