How Long is a Day on Venus?

by Fraser Cain on May 14, 2008

Venus takes 224.65 days to complete each orbit. This is a little less than a year on Earth. But instead of a similar rotational period to Earth’s 24 hours, Venus takes 243 days to rotate once.

In other words, a day on Venus is longer than a year. This is the longest day in the entire Solar System. Even stranger, Venus rotates backwards compared to the other planets in the Solar System.

If you could stand on the surface of Venus, the Sun would appear to rise in the West and then set in the East.


Fraser Cain is the publisher of Universe Today. He's also the co-host of Astronomy Cast with Dr. Pamela Gay.

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