One
Uranus's length of year is 83 earth years, 273 earth days.
Mars, with a orbital period of around 687 days, almost two Earth years (1.88 earth years).
The length of year on Mars is 686.98 Earth days or 1.88 Earth years.
248 earth years
164.79 "Earth Years"
Is 164.8 of earth years
About 29.5 Earth years.
11,400 earth years.
365
The length of one sidereal Earth year is 3.39% the length of one sidereal Saturn year. In other words, the length of one sidereal Saturn year is 29.5 times the length of one sidereal Earth year. (A sidereal year is the time between alignments of the sun, the planet, and a distant fixed star.)
12 earth yearsAbout 12 earth years
A year here on planet Earth is 365 and a quarter days long. A "relative length of year" can only be given by comparison with some other object's year. Since we live on the Earth, we usually compare the years of other planets to that of Earth, rather than the other way around. So the year of Mars is 1.88 Earth years and that of Venus is 0.615 Earth years. The year of Earth is 1.000 Earth years.