About how many Earth years is a year on Saturn?

A year on Saturn lasts about 29.5 Earth years.

Saturn takes approximately 29.45 Earth years to complete one orbit around the Sun, so its orbital year is commonly rounded to 29.5 Earth years. This long year results from Saturn’s great distance from the Sun: it orbits at an average distance of about 1.4 billion kilometers, or roughly 9.5 astronomical units.

Saturn’s slow journey around the Sun means that each season lasts about seven Earth years. The planet has an axial tilt of approximately 26.7 degrees, similar to Earth’s 23.4-degree tilt, so Saturn experiences recognizable seasonal changes despite its long orbital period.

This figure is often confused with the length of a Saturnian day. Saturn rotates extremely quickly, completing a rotation in roughly 10.7 hours, although its exact rotation period is difficult to measure because the planet has no solid surface. Its year is also much longer than Jupiter’s roughly 12-year orbit, Uranus’s 84-year orbit, and Neptune’s 165-year orbit.