How Long Planets Take to Orbit the Sun | Solar Year of Other Planets as Compared to Earth

The length of a year on any given planet is determined by how long it takes for that planet to make one revolution around the sun. Since every planet travels at a different speed and has a different orbital path in regard to size and shape, the length of a year can vary greatly from planet to planet. If you had lived on a different planet your whole life, then you would be a different age due to the orbital differences.