This question was deemed null by Copernicus's Heliocentric theory, whereby stating that the sun is the center of our solar system. Thus, we cannot measure the length of a year of the sun, because the sun does not rotate around the Earth, which is the definition of a "year." One can, however, measure how long a "day" on the sun lasts by measuring its rotational velocity.
(THE SUN DOESN'T HAVE A YEAR BECAUSE IT DOESN'T ORBIT ANYTHING!!!)
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A year on Mars is equal to 687 Earth days. That is about 2 Earth years.
0.2408 of an Earth year.
It takes Mars about 687 Earth days to have a full year, compared to the Earth's 365 days in a year. A year on Mars is 1.88 Earth years.
One year on Jupiter takes about 11.8 Earth years, as Jupiter has a much longer orbit around the Sun compared to Earth.
The year on the planet Mercury is very short. A year on this planet lasts 88 days compared to 365 days on Earth.
If you are speaking of one orbit around the sun, about 2 earth years. If you are using Earth's calendar, one year is one year. (note it's rotation on it's axis is a little more than one Earth day - 24.6 hours) on mars there is only a little time difference if compared to the earth if on earth 7:00AM than on mars it will be 7:10AM!!
Uranus's year is approximately 456.445 Earth years.
1 year
A year on Saturn is equivalent to about 29.5 Earth years. This is the time it takes for the planet to complete one orbit around the Sun. Saturn's long orbital period is due to its greater distance from the Sun compared to Earth.
The dwarf planet Pluto is the planet with a year 248 earth years long.
The dwarf planet Haumea is the planet with a year 280 earth years long.