Here are the planets in our solar system ordered from shortest to longest year (orbital period):

1. Mercury: 88 Earth days

2. Venus: 225 Earth days

3. Earth: 365.25 Earth days

4. Mars: 687 Earth days

5. Jupiter: 11.86 Earth years

6. Saturn: 29.46 Earth years

7. Uranus: 84 Earth years

8. Neptune: 165 Earth years

Important Note: A planet's year is defined as the time it takes to complete one orbit around the Sun.