Look at the real darkness around us: don't pretend it's not real. (sarahbessey.com)
Jupiter's axial tilt is very small, so its seasonal variation is minimal; Uranus, on the other hand, has an axial tilt so extreme it is virtually on its side, which means that its hemispheres are either perpetually in sunlight or perpetually in darkness around the time of its solstices. (newworldencyclopedia.org)