Our Solar system consists of a Sun, asteroids, eight planets & their moons. These eight planets, in accordance to their increasing distance from the sun are: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus & Neptune. While Jupiter is the biggest planet in our solar system, earth is the one that contains life on it. Every planet has different sets of characteristics and properties, owning to their composition and Gravitational pull.
However, the one property that all planets exhibit in a similar fashion is their direction of rotation. All the planets rotate in an anti-clockwise direction...well, almost everyone else except for the planets Venus & probably Uranus. These are the only planets in our solar system that rotates in clockwise direction. Due to this, while in all other planets, the sun rises in the east and sets in the west, in Venus & Uranus, the sun rises in the west and sets in the east.
In other words, if you arrived on Venus in the morning, the sun would be in the west and would set in the east. The only thing is that it would set about four Earth-months later! Yeah...you heard that right. It's because one day on Venus lasts for 243 of our Earth days. Interesting, right? Actually, you should probably add Uranus to your list of planets in retrograde (or "backward") rotation, because it is tipped more than 90 degrees. The day would be a short one, because Uranus completes a rotation on its axis every 17 hours, which is a pretty typical time for all the gas giants. However, one year on Uranus is equivalent to about 84 Earth years.
Although, nobody knows why the planets have the spins they have. It's entirely plausible that the spin rates date back to the formation stage of the solar system, which began about 4.6 billion years ago and lasted about half a billion years.
A theory about the retrograde rotation of both, Venus and Uranus, is that they originally rotated from west to east, just like the other seven planets but at some point, there was a collision between them with other planetary bodies, and that flipped them over permanently. In the case of retrograde rotation of Venus, another factor is that the sun's gravity created a tidal effect on the planet.