Gliese 667 Cc
Because of Gliese 667 Cc's distance from its star, it is predicted to be tidally locked to its star. Just as Earth's Moon always shows the same face to the Earth, the length of Gliese 667 Cc's day would then match the length of its year. This means it would be permanently light on one half and permanently dark on the other half of its surface. Tidal locking also means the planet would have no axial tilt and that means the planet would not experience any seasons.