The speed at which a planet rotates (spins) determines its "sidereal day", and the period of its orbit around the Sun determines its "year".

The "solar day" is determined by a combination of the spin time and the year.

The rotation of Venus is extremely slow, and it spins "backwards", from east to west (clockwise as seen from from above the Earth's north pole). The time Venus takes to complete a rotation (243 Earth days) is longer than the time it takes to orbit the Sun (225 Earth days). So a "sidereal day" is longer than its year.

However, the "solar day" is about 116.75 Earth days long. So, in that case, the year is about twice the day length. The solar day is shorter than the sidereal day because Venus rotates "backwards". Astronomers call this "retrograde rotation".

On Venus, the Sun (if it were visible) would rise in the west and set in the east. The combination of its rotation and revolution produces an apparent solar day (roughly sunrise to sunrise) of about 116.75 Earth days.

Venus is the only planet, apart from Uranus, that rotates in the clockwise direction. There are several theories why Venus rotates this way. Most involve a collision with another orbiting body in the distant past.

(Uranus's retrograde rotation is a result of the planet being tipped onto its side. Its axial tilt is 98 degrees, meaning its "north pole" is "below" the plane of the orbit. If its north pole was "above" its orbital plane (like the Earth's), it would be rotating "normally".)