Venus Day vs Year: Why a Day on Venus Lasts Longer

A day on Venus is longer than its year because Venus rotates extremely slowly.

Venus takes about 243 Earth days to complete one rotation on its axis. This is called a sidereal day, meaning one full spin compared with distant stars.

But Venus travels around the Sun much faster. It completes one orbit in about 225 Earth days. That means its year ends before the planet finishes one full rotation.

Venus also rotates in the opposite direction from most planets. This is called retrograde rotation. Because of this unusual spin and its movement around the Sun, sunrise-to-sunrise on Venus takes about 117 Earth days.

Here is the interesting part: if you could safely stand on Venus, the Sun would appear to rise in the west and set in the east.

The practical takeaway is that a planet's day and year are controlled by different motions: rotation creates days, while orbiting the Sun creates years.