
On Venus, a single day lasts longer than an entire year because it takes 243 Earth days to complete one rotation on its axis but only 225 Earth days to orbit the Sun.
Venus rotates so slowly that one full spin takes 243 Earth days, which is indeed longer than its 225-day trip around the Sun. But because Venus spins backwards, the actual cycle from sunrise to sunrise takes just 117 Earth days. One Venusian year contains almost two entire solar days. More

