The time it takes a planet to revolve around the sun is called its orbital period. This varies greatly depending on the planet's distance from the sun.

Here's a breakdown of the orbital periods for each planet in our solar system:

* Mercury: 88 Earth days

* Venus: 225 Earth days

* Earth: 365.25 Earth days (1 year)

* Mars: 687 Earth days

* Jupiter: 11.86 Earth years

* Saturn: 29.46 Earth years

* Uranus: 84 Earth years

* Neptune: 165 Earth years

As you can see, the further a planet is from the sun, the longer its orbital period. This is because the planets' orbital paths are elliptical, not perfectly circular, and the further a planet is from the sun, the longer its elliptical path.